Manufacturers > CAT Equipment (Caterpillar) > CAT Dozers
CAT Dozer Parts: Aftermarket Caterpillar Bulldozer Parts
EquipXR supplies aftermarket replacement parts for Caterpillar bulldozers and track-type tractors, covering everything from compact D1 models to the massive D11 mining dozers.
Whether you are replacing worn undercarriage components, rebuilding hydraulic systems, servicing drivetrain parts, or sourcing cab and control components, we can help you identify the correct aftermarket CAT dozer replacement parts for your model and application. We deliver quality replacement parts at a fraction of dealer pricing, with fast shipping to job sites across the United States.
Aftermarket CAT Dozer Parts For All D-Series Crawler Models
Caterpillar’s D-Series crawler dozers have been the backbone of earthmoving, mining, forestry, and construction fleets for decades, and keeping them productive means having reliable access to replacement parts. EquipXR carries aftermarket components engineered to meet or exceed OEM specifications across the full D-Series lineup. Our parts are manufactured to the same tolerances, metallurgy, and performance standards as OEM Caterpillar dozer parts. Every part we ship is backed by our quality guarantee and supported by a team that knows CAT equipment inside and out.
Our aftermarket CAT parts catalog covers current production machines, recent models still in active fleets, and legacy dozers that dealers have largely stopped supporting. Every part we supply is manufactured to meet or exceed Caterpillar OEM specifications, so you get the fit, performance, and service life you’d expect from the dealer without the dealer markup.
CAT Dozer Aftermarket Replacement Parts by Model, Generation & Variation
We carry aftermarket parts for a broad range of Caterpillar bulldozers and track-type tractors. Click through to your specific model to see the full parts catalog for that machine. Finding the right part starts with knowing exactly what machine you’re working on. CAT dozer model designations carry a lot of information. The number indicates the size class, the letter suffix tells you the generation, and configuration codes like LGP (Low Ground Pressure), XL (Extra Long), HD (Heavy Duty), and XW (Extra Wide) identify specific variants with different track gauges, usage conditions, frames, or duty ratings.
Small CAT Dozers & Track-Type Tractors: D1, D2, D3, & D4 Series
Small CAT dozers handle landscaping, residential construction, utility work, and light site preparation. These compact crawlers are workhorses for contractors who need maneuverability in tight spaces without sacrificing pushing power. Their compact footprint makes them ideal for tight job sites, trenching, grading driveways, and finish work where a larger machine can’t maneuver.
These smaller CAT dozer models share many common wear components but have distinct undercarriage, hydraulic, and drivetrain configurations that require model and generation specific parts. EquipXR carries full aftermarket parts coverage for every small-frame D-series model Caterpillar has produced.
CAT D1 Series: D1 + LGP, XL
The D1 series and the D3K and D3K2 platform that replaced them in the updated naming convention are Caterpillar’s entry-level track-type tractors. We supply aftermarket CAT dozer parts for compact D1-series related machines used in grading and general earthmoving applications. Our parts inventory covers undercarriage, hydraulics, engine components, operator station parts, blades, and wear items. Common replacement part needs include track chains, rollers, idlers, sprockets, wear parts, hydraulic components, select engine parts, and drivetrain service parts.
CAT D1 Models & Variants: D1, D1 LGP, D1 XL, D1 Mulcher LGP, D3K2
CAT D2 Series: D2 + 2nd Generation, LGP, XL
The D2 Series covers the classic D2, the current-production D2 2nd Generation, and the renamed D4K and D4K2 models. Whether you’re running an original D2 restoration project or maintaining a current D2 2nd Generation, we stock replacement parts for the entire series.
EquipXR carries a large inventory of parts covering the entire dozer. Commonly ordered aftermarket parts include rollers, idlers, sprockets, track chains, hydraulic cylinders, final drives, and cab components.
CAT D2 Models & Variants: D2, D2 LGP, D2 XL, D4K, D4K2
CAT D3 Series: D3 + B, C, G, K + 2nd Generation, 3rd Generation, LGP, XL
The D3 family is one of the most widely deployed small dozer lines, with LGP (Low Ground Pressure) and XL variants extending its capability into soft-terrain and wide-track applications. This series spans multiple decades of production, from the early D3 machines through current production models.
These machines often require close attention to track setup, frame style, and serial information when matching parts, because the configuration has changed across generations and their variants.
CAT D3 Models & Variants: D3, D3 LGP, D3 XL, D3B, D3B LGP, D3C, D3C LGP, D3CIII, D3CXL, D3C II, D3C III, C4C LGP II, D3C LGP III, D3C XL III, D3G, D3G LGP, D3G XL, D3K, D3K XL, D3K LGP, D3K XL, D3K2 LGP, D3K2 XL, D3L2 XL
CAT D4 Series: D4 + B, C, D, E, F, G, H, K, K2 + 2nd Generation, 3rd Generation, LGP, HST, XL
The D4 series bridges the small and medium dozer categories and has been in continuous evolution for decades. The D4 is arguably the most versatile small dozer CAT has ever produced, and the long production history means parts demand stays strong for equipment dating back to the legacy D4D and D4E machines. Our aftermarket D4 parts catalog covers everything from vintage machines still working on farms and ranches through the current D4K2 XL.
CAT D4 Models & Variants: D4, D4B, D4B LGP, D4C HST III, D4C HST LGP III, D4C HST XL III, D4C II, D4C III, D4C LGP II, D4C LGP III, D4C XL III, D4D, D4E, D4E LGP, D4F, D4G, D4G LGP, D4G XL, D4H, D4H XL, D4H II, D4H LGP, D4H LGP II, D4K, D4K LGP, D4K XL, D4K2, D4K2 LGP, D4K2 XL, D4K2 LGP
Medium CAT Dozers & Track-Type Tractors: D5, D6, & D7 Series
Medium CAT dozers are the backbone of commercial construction, road building, pipeline work, and land clearing. These machines often rack up hours fast, which means steady parts demand across the entire category. Because these machines are worked hard, aftermarket replacement parts are often needed in undercarriage, hydraulic, cooling, powertrain, and blade systems. EquipXR has all of the aftermarket parts you need to keep your medium-class D5, D6, and D7 (along with their variants) operating at their best.
CAT D5 Series: D5 + B, C, E, G, H, K, K2, M, N + 2nd Generation, 3rd Generation, LGP, SA, HST, XL
The D5 bridges the small and medium classes depending on configuration, and the spread from early mechanical D5B machines to the current electro-hydraulic D5 means parts catalogs vary significantly by generation. At EquipXR, we supply parts for every configuration, track width, and generation of the CAT D5 dozer.
CAT D5 Models & Variants: D5, D5 LGP, D5B, D5B LGP, D5B SA, D5C, D5C LGP, D5C XL, D5CIII, D5 HST XL III, D5C XL III, D5C HST LGP III, D5E, D5G, D5G LGP, D5G XL, D5H, D5H II, D5H HD, D5H LGP, D5H STD, D5H XL, D5H LGP II, D5H LGP, D5K LGP, D5K XL, D5K2, D5K2 LGP, D5K2XL, D5KXL, D5K LGP, D5M, D5M LGP, D5M XL, D5N, D5NXL, D5N LGP, D5R, D5R LGP, D5R2, D5R2 LGP
CAT D6 Series: D6 + B, C, D, E, G, H, K, K2, M, N, R, T + 2nd Generation, 3rd Generation, 4th Generation, LGP, STD, HD, XE, XR, WH, XL
The D6 is Caterpillar’s best-selling dozer and one of the most common track-type tractors on any continent. Our D6 parts inventory reflects that. We stock high-volume wear items for the D6T and D6XE in depth while maintaining coverage for older D6C and D6G machines, as well as everything in between.
We support a broad range of aftermarket parts for undercarriage systems, final drive-related components, hydraulic assemblies, transmission and powertrain parts, cooling components, cab parts, wear items, and specialty items like VPAT blade hardware and XW wide-gauge undercarriage. If you’re operating a D6 of any generation or configuration, we can help narrow down the right replacement options and get them to you quickly.
CAT D6 Models & Variants: D6, D6XE, D6XE WH, D6 WH, D6B, D6C, D6D, D6D LGP, D6E, D6G, D6H, D6H HD STD, D6H II, D6H LGP, D6H LGP II, D6K, D6K XL, D6K LGP, D6K2, D6K2XL, D6K2 LGP, D6KXL, D6M, D6M HD, D6M HD XL, D6MXL, D6M LGP, D6N, D6N LGP, D6NXL, D6N XL WH, D6N XL IV, D6N WH, D6N LGP WH, D6N LGP IV WH, D6N LGP IV, D6N LGP, D6R, D6R II, D6R III, D6R XR, D6RXL, D6RXL II, D6R WH, D6R LGP II, D6R LGP, D6RXW, D6T, D6TXL, D6TXW, D6T XL IV WH, D6TXWVP, D6T XW IV, D6T WH, D6T XL WH, D6T LGP WH, D6T LGP
CAT D7 Series: D7 + D, E, F, G, H, R + 2nd Generation, 3rd Generation, 4th Generation, Direct Drive, LGP, STD, HD, XR, WH, XL
CAT D7 dozers are built for heavier work, and the parts on these machines are expected to hold up under serious load. For customers maintaining older D7 platforms, aftermarket sourcing can be especially valuable when looking to manage cost without compromising fit. We carry undercarriage, track, engine, transmission, powertrain, hydraulic, blades, ground engaging parts, and more for every D7 generation including the electric-drive D7E.
CAT D7 Models & Variants: D7, D7D, D7E, D7E LGP, D7F, D7G, D7H, D7H-HD, D7H DIRECT DRIVE, D7H II, D7R, D7R II, D7R2, D7R XR II, D7R XR, D7R LGP II WH, D7R LGP II, D7R LGP, D7R II WH, D7H LGP II, D7G LGP, D7E WH IV, D7E WH, D7E LGP WH IV, D7E LGP WH, D7E LGP IV, D7E IV, D7 WH, D7 LGP
Large CAT Dozers & Track-Type Tractors: D8, D9, D10, & D11 Series
Large-class dozers are built for mining, large-scale earthmoving, and heavy production work where machines run around the clock and parts consumption is a major operating expense. Because these machines operate under extreme loads, replacement intervals for undercarriage, ground-engaging tools, and powertrain components are short relative to smaller dozers, and parts availability directly impacts production. EquipXR helps large CAT dozer customers find the aftermarket parts they need quickly, and at reasonable prices, which deliver significant savings per rebuild cycle.
CAT D8 Series: D8 + H, K, L, N, R, R2, T + 2nd Generation, 3rd Generation, 4th Generation, LGP, WH
The D8 is the entry point into large-class production dozing and remains one of CAT’s most popular machines for mining and heavy construction. We supply parts for current D8T machines as well as the D8H, D8K, D8L, D8N, and D8R models still productive in mining and quarry operations. The steady demand across all generations of the D8, means that we stock a large inventory of parts in our warehouses around the country and can ship parts quickly.
CAT D8 Models & Variants: D8T WH LGP, D8T WH IV, D8T WH, D8T LGP WH IV, D8T LGP WH, D8T LGP IV, D8T LGP, D8T IV, D8T, D8R LGP, D8R2, D8R, D8N, D8L LGP, D8L, D8K, D8, D8H
CAT D9 Series: D9 + D, E, G, H, L, N, R, T + 4th Generation, WH
The CAT D9 is a mining and heavy production staple, and the long production history from the D9D through the current D9T means we support a broad range of machines with legacy and current-generation parts. For D9 series dozers, we help source aftermarket parts for severe-duty work environments where high-impact wear is common. Our most ordered aftermarket CAT dozer parts includes track chains, track shoes, rollers, idlers, sprockets, cutting edges, ripper wear parts, hydraulic components, and select powertrain parts.
CAT D9 Models & Variants: D9, D9D, D9E, D9G, D9H, D9L, D9N, D9R, D9T, D9T WH IV, D9T WH, D9T IV
CAT D10 Series: D10 + R, N, L, T, T2
CAT D10 dozers are large production machines used where uptime and pulling power matter. Our D10 aftermarket parts catalog covers the original D10 through the current D10T2. We work with customers who need aftermarket components for undercarriage rebuilds, blade and ripper systems, hydraulic functions, and other major replacement categories.
CAT D10 Models & Variants: D10T, D10T2, D10R, D10N, D10, D10L
CAT D11 Series: D11 + CD, N, R, T
The D11 is the largest track-type tractor Caterpillar produces and is used almost exclusively in mining applications. We stock and help source aftermarket replacement parts for all D11 generations and variations, including the D11, D11N, D11R, and D11T. For such large models, parts are specialized and critical-path, so we stock the major wear items and can source less common components on request. These parts must match the correct machine setup and service requirements, which is why model identification and part-number cross-reference are especially important.
CAT D11 Models & Variants: D11, D11N, D11R, D11T, D11 CD
Legacy & Discontinued CAT Bulldozer Models
Older and discontinued Caterpillar dozers are often the hardest machines to source parts for, because dealer parts support winds down as models age out of production. EquipXR specifically maintains aftermarket parts coverage for legacy CAT dozers, including early D-series machines, vintage crawlers, and models Caterpillar has classified as support-only or end-of-life.
Finding parts for these machines through dealer channels is often impossible or prohibitively expensive. We maintain inventory and sourcing relationships specifically to support these older machines, including undercarriage components, engine rebuild parts, hydraulic seals and cylinders, and cab hardware. If you’re running an older dozer and your local dealer has told you a part is no longer available, contact us. There’s a good chance we can supply a direct replacement or source an equivalent part that fits.
| Size Class | Series | Models Covered |
|---|---|---|
| Small | CAT D1 | D1, D1 LGP, D1 Mulcher LGP, D1 XL |
| Small | CAT D2 | D2, D2 LGP, D2 XL |
| Small | CAT D3 | D3, D3 LGP, D3 XL, D3B, D3B LGP, D3C, D3C II, D3C III, D3C LGP, D3C LGP II, D3C LGP III, D3C XL III, D3CIII, D3G, D3G LGP, D3G XL, D3K LGP, D3K, D3K XL, D3K XL, D3K2 LGP, D3K2 XL, D3L2 XL |
| Small | CAT D4 | D4, D4B, D4B LGP, D4C II, D4C III, D4C HST III, D4C HST LGP III, D4C HST XL III, D4C LGP II, D4C LGP III, D4C XL III, D4D, D4E, D4E LGP, D4F, D4G, D4G LGP, D4G XL, D4H, D4H II, D4H LGP, D4H LGP II, D4H XL, D4K, D4K LGP, D4K XL, D4K2, D4K2 LGP, D4K2 XL |
| Medium | CAT D5 | D5, D5 LGP, D5 HST XL III, D5B, D5B LGP, D5B SA, D5C, D5C III, D5C HST LGP III, D5C LGP, D5C XL, D5C XL III, D5E, D5G, D5G LGP, D5G XL, D5H, D5H II, D5H HD, D5H LGP, D5H LGP II, D5H STD, D5H XL, D5K LGP, D5K XL, D5K2, D5K2 LGP, D5K2 XL, D5M, D5M LGP, D5M XL, D5N, D5N LGP, D5N XL, D5R, D5R LGP, D5R2, D5R2 LGP |
| Medium | CAT D6 | D6, D6 WH, D6 XE, D6 XE WH, D6B, D6C, D6D, D6D LGP, D6E, D6G, D6H, D6H II, D6H HD STD, D6H LGP, D6H LGP II, D6K, D6K LGP, D6K XL, D6K2, D6K2 LGP, D6K2 XL, D6M, D6M HD, D6M HD XL, D6M LGP, D6M XL, D6N, D6N IV, D6N LGP, D6N LGP IV, D6N LGP IV WH, D6N LGP WH, D6N WH, D6N XL, D6N XL IV, D6N XL WH, D6R, D6R II, D6R III, D6R LGP, D6R LGP II, D6R WH, D6R XL, D6R XL II, D6R XR, D6R XW, D6T, D6T LGP, D6T LGP WH, D6T WH, D6T XL, D6T XL IV WH, D6T XL WH, D6T XW, D6T XW IV, D6T XW VP |
| Large | CAT D7 | D7, D7 LGP, D7 WH, D7D, D7E, D7E IV, D7E LGP, D7E LGP IV, D7E LGP WH, D7E LGP WH IV, D7E WH, D7E WH IV, D7F, D7G, D7G LGP, D7H, D7H II, D7H HD, D7H Direct Drive, D7H LGP II, D7R, D7R II, D7R II WH, D7R LGP, D7R LGP II, D7R LGP II WH, D7R XR, D7R XR II, D7R2 |
| Large | CAT D8 | D8, D8H, D8K, D8L, D8L LGP, D8N, D8R, D8R2, D8R LGP, D8T, D8T IV, D8T LGP, D8T LGP IV, D8T LGP WH, D8T LGP WH IV, D8T WH, D8T WH IV, D8T WH LGP |
| Large | CAT D9 | D9, D9D, D9E, D9G, D9H, D9L, D9N, D9R, D9T, D9T IV, D9T WH, D9T WH IV |
| Extra Large | CAT D10 | D10, D10L, D10N, D10R, D10T, D10T2 |
| Extra Large | CAT D11 | D11, D11 CD, D11N, D11R, D11T |
Shop Caterpillar Aftermarket Dozer Parts by Category
We carry a broad selection of CAT dozer aftermarket parts across major component groups. If you know what system you are working on, shopping by category can speed up the sourcing process.
Dozer parts fall into a handful of functional categories, and knowing which system a component belongs to makes it easier to diagnose related part wear, plan preventive maintenance, and build accurate parts lists for scheduled overhauls and rebuilds. Browse our aftermarket CAT dozer parts by category to find what you need.
Dozer Undercarriage Parts
The undercarriage typically represents 50% or more of total owning-and-operating costs over the machine’s life. EquipXR stocks track chains, track shoes, sprockets, idlers, carrier rollers, track rollers, sprockets, segments, track adjusters, recoil springs, and complete undercarriage assemblies for every CAT dozer model. We supply both standard and heavy-duty configurations, along with sealed-and-lubricated (SALT) and standard chain options of all chain link quantities.
Dozer Hydraulic Components
Dozer hydraulics take heavy abuse from blade work, ripper operation, and steering on hydrostatic-drive models. We carry hydraulic pumps, cylinders, valves, hoses, fittings, filters, and seal kits for CAT dozer blade lift, tilt, pitch, and ripper circuits. If your machine is drifting, leaking, slowing down under load, or showing erratic response, worn hydraulic components may be the cause.
Dozer Engine, Transmission, & Drivetrain Parts
From top-end rebuilds to complete long blocks, our engine parts catalog covers the full range of CAT 3000, C-series, and ACERT engines used across the D-series dozer lineup. Aftermarket CAT engine, transmssion and drivetrain parts include everything from routine maintenance items to major overhaul components: filters (air, fuel, oil, hydraulic), gaskets and seals, water pumps, fuel injectors and pumps, turbochargers, starters and alternators, radiators, final drives, transmission components, and torque converter parts. We stock both rebuild components and ready-to-install assemblies with support for mechanical and electric-drive models.
Bulldozer Blades, Rippers & Attachments
Dozer productivity depends heavily on the condition of the working end of the machine. Ground-engaging tools wear fast and need regular replacement to maintain productivity and protect the underlying blade or ripper structure. Straight (S), semi-universal (SU), universal (U), and angle (A) blades are all supported in our aftermarket catalog, along with the cutting edges, end bits, wear plates, push arms, and trunnion components that go with them. Ripper parts include shanks, tips, protectors, pins, and complete single-shank and multi-shank ripper assemblies. These items take constant punishment and should be inspected regularly to maintain performance and productivity.
Dozer Operator Cab & Controls
Operator station parts are easy to overlook until a cracked glass, worn seat, or broken control lever puts makes the machine inoperable. EquipXR supplies cab glass, ROPS/FOPS replacements, weatherstripping, HVAC components, seats and seat suspensions, joysticks and control levers, instrument panels, switches, wiring harnesses, and interior trim for CAT dozer cabs across all model years. Replacing worn or damaged cab parts can improve visibility, operator comfort, and day-to-day usability.
OEM-Equivalent Parts for CAT Dozer Equipment
Every aftermarket part EquipXR sells is manufactured to match or exceed the original Caterpillar specifications. That means identical dimensions, identical materials in wear-critical components, and identical performance characteristics, but at a price significantly below CAT OEM dealer pricing. We source from established aftermarket manufacturers with proven track records supplying the mining, construction, and agricultural sectors, not bargain-bin international suppliers.
For many fleets, aftermarket replacement parts make sense because they help control maintenance budgets while keeping machines productive. When quality aftermarket parts are matched to the correct serial range and configuration, aftermarket parts can be a strong option for both routine maintenance and larger repair or rebuilds.
CAT Part Number Cross-Reference Look-Up
If you already have a CAT part number from your operator’s manual, parts book, or previous order, you can cross-reference it directly to our aftermarket equivalent. Provide the OEM number, along with your machine’s model and serial number, and we’ll confirm the matching part, along with any superseded numbers Caterpillar may have issued for that component. This is the fastest way to order when you know exactly what you need.
Cross-referencing is an essential step to reduce ordering errors, especially on dozers with multiple undercarriage arrangements, serial breaks, or configuration changes over time. When you contact us, send as much information as you have. Useful details include the machine model, serial number, part number, measurements, photos, and whether the machine is standard track, XL, LGP, VPAT, or another variation. That information helps us narrow the search and reduce your equipment’s downtime.
CAT Dozer Parts Frequently Asked Questions
EquipXR carries aftermarket parts for every Caterpillar D-series track-type tractor, from the small D1, D2, D3, and D4 series through medium D5, D6, and D7 dozers and large D8, D9, D10, and D11 mining machines. We carry parts for current production models, earlier letter-suffix generations (D6B, D8H, D9L, etc.), and standard, XL, and LGP configurations. We also support legacy and discontinued CAT dozer models that dealers no longer stock.
CAT dozer parts usually show warning signs before they fail completely. Catching wear early can help prevent secondary damage and unplanned downtime. Watch for these common indicators on CAT dozers:
- Undercarriage wear shows up as excessive track sag, audible popping or clicking from the sprocket engagement, uneven shoe wear, hook-shaped sprocket teeth, or track chains that won’t hold adjustment.
- Hydraulic issues include slow or weak blade response, visible leaks at cylinder rod seals or hose connections, overheating hydraulic oil, and foaming in the reservoir. A blade that drifts down when the engine is off indicates cylinder seal failure.
- Engine and drivetrain warning signs include excessive blow-by, declining fuel efficiency, hard starting, loss of power under load, abnormal exhaust color, and noise from the final drives or transmission. Regular oil sampling catches many of these issues before symptoms appear.
- Cab and control problems are usually obvious, such as cracked glass, non-functioning HVAC, sloppy joystick response, an uncomfortable operator seat, or intermittent electrical issues. Don’t ignore these; operator fatigue from a failing cab directly impacts productivity.
- Ground-engaging tools need replacement when cutting edges are worn, end bits are rounded or missing, and ripper tips have lost their penetrating profile. Running worn GET damages the underlying blade or shank, turning a cheap repair into an expensive one.
A consistent inspection schedule is one of the best ways to control repair costs. Checking wear items, fluid leaks, hardware condition, and undercarriage measurements at regular intervals helps you plan repairs before small problems become major ones. Any one of these issues are a signal to inspect the related system and plan a parts order before it turns into a full machine breakdown.
Quality aftermarket parts manufactured to OEM specification perform equivalently to dealer parts in fit, form, and function. The key is sourcing, not all aftermarket suppliers hold the same quality standards. EquipXR works only with established manufacturers whose parts meet or exceed Caterpillar’s original engineering manufacturer specifications for dimensions, materials, and heat treatment.
The most reliable way is to provide your dozer’s model and serial number along with either the CAT OEM part number or a detailed description of what you need. Serial number matters because Caterpillar makes running changes across production, and a D6T built in 2008 may use a different component than a D6T built in 2018. Start with your machine’s model designation and serial number, which you’ll find on the machine’s ID plate (typically on the frame near the operator station). If you don’t have a part number, our team can work with you to identify the correct replacement from photos, a description, or your machine’s parts book.
Yes. We help source parts for many older and legacy CAT bulldozer models. Aftermarket sourcing is often especially useful for older equipment because it can expand your options and help manage repair costs. We maintain aftermarket parts coverage for discontinued CAT dozers going back decades, including early D-series machines and models that Caterpillar has classified as end-of-life. Pre-letter-suffix machines and early D-Series models are often underserved by dealer channels, and we’ve built sourcing relationships specifically to keep these machines working.
CAT dozers are used across construction, mining, forestry, agriculture, landfill operations, pipeline construction, road building, land clearing, reclamation, and military and government work.
- Small dozers typically handle landscaping, utility, and residential work.
- Medium dozers dominate commercial construction and site prep.
- Large dozers are built for mining, quarry operations, and large-scale earthmoving where production volume is the priority.
You can replace individual components, and in most cases that’s the smarter approach. Track chains, shoes, sprockets, idlers, and rollers all wear at different rates depending on application, ground conditions, and operator habits. Replacing only what’s worn (and matching new wear parts to the remaining life of adjacent components) can reduce your part spend in the short and long-term.
A full undercarriage rebuild makes sense when multiple components are near end-of-life simultaneously, typically at the end of a wear cycle. Our team can help you plan undercarriage replacement strategy based on your wear patterns, budget, machine’s hours, and application.
Under the Magnuson-Moss Warranty Act in the United States, a manufacturer cannot void your warranty simply because you used aftermarket parts. A warranty claim can only be denied if the aftermarket part itself caused the failure being claimed.
That said, warranty policies vary, and if your machine is under active CAT warranty, it’s worth reviewing the terms before making parts decisions. However, most CAT dozers in active use are out-of-warranty machines where the question doesn’t apply.
This is general information and not legal advice; consult your warranty documentation or an attorney for specifics about your situation.
Most in-stock parts ship the same business day when ordered before our daily cutoff, with standard ground and freight delivery typically arriving in 2 to 5 business days depending on destination. Expedited and overnight shipping are available when downtime costs justify the premium.
Large items such as complete undercarriage assemblies, engine long blocks, major hydraulic components, will ship via freight and typically deliver in 3 to 7 business days. For specialty or sourced parts, we’ll give you an accurate lead time at the time of order. For remote job sites or international destinations, contact us directly for transit estimates.
If you have a machine down and need emergency shipping, call us directly, we’ll do everything we can to get your equipment running again quickly.
Parts For Other CAT Heavy Equipment Types
In addition to aftermarket CAT dozer parts, we also help customers source aftermarket parts for other Caterpillar equipment types. That may include excavators, wheel loaders, track loaders, backhoes, skid steers, motor graders, and other heavy equipment. If you maintain a mixed CAT fleet, we can help you source parts across multiple machine types, making your replacement parts orders easier, faster, and less expensive.
Why Choose EquipXR for Caterpillar Dozer Aftermarket Parts?
EquipXR exists to give heavy equipment operators a better option than dealer pricing with shorter lead times. We know the equipment we sell parts for, and we support machines that dealers have largely forgotten. Our team includes people with hands-on equipment experience who can help you troubleshoot, cross-reference part numbers, and plan maintenance schedules.
Whether you’re a single-machine owner-operator keeping a D4 running on a family farm or a fleet manager sourcing parts for a yard full of D10s, we treat the order the same way and get the right part out the door the same day.
When you call, you get a real person who understands what a down dozer costs you per hour. That combination of quality parts, deep catalog coverage including legacy models, fair pricing, and knowledgeable support, is why fleet managers, independent contractors, and owner-operators keep coming back to EquipXR for their CAT dozer parts needs.
High-Quality Parts
Quality replacement parts built to meet or exceed original equipment specifications for dependable operation in demanding conditions.
Fast Shipping
Every day a machine sits is money out of your pocket. We ship quickly from stocked inventory so you can get back to work.
Expert Support
Our team helps verify fitment using your machine model, serial number, part number, or application details before you order.
Parts For All CAT Models
Aftermarket CAT dozer parts for all models, including popular Caterpillar dozers: D3, D4, D5, D6, D7, D8, D9, D10, & D11.
Get The CAT Dozer Equipment Parts You Need, Fast
When your CAT dozer is down, waiting around for parts is not an option. EquipXR helps you find the right aftermarket CAT dozer parts quickly, so your machine can get back to work with less downtime and fewer headaches. Whether you need undercarriage parts, track chains, rollers, idlers, sprockets, hydraulic components, engine parts, transmission parts, cab parts, or blade components, our team can help match you with the right replacement for your specific CAT dozer model.
Send us your part number, machine model, serial number, or a quick description of what you need. Our parts experts will help confirm fitment, check availability, and provide a fast quote.
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