Home > Dozer Parts > Engine Parts > Cooling System Parts
Dozer Cooling System Parts: Aftermarket Cooling Parts For Bulldozers
Dozer cooling system parts do more than keep the engine from boiling over. They keep the engine, the hydraulics, and the intake charge in their proper temperature range while the machine works in dust, mud, and heat all day.
EquipXR stocks aftermarket radiators, water pumps, oil coolers, charge air coolers, fans, hoses, and accessories that complete the cooling system for CAT, Komatsu, John Deere, CASE, Hitachi, Liebherr, and Dressta dozers. Know your engine model and serial number? Our parts experts will quote it and confirm fit before anything ships.
Aftermarket Cooling Parts For All Makes & Models
EquipXR supplies aftermarket cooling system parts for many common bulldozer makes and models. Available parts may include complete radiators, radiator cores, water pumps, hydraulic oil coolers, transmission oil coolers, charge air coolers, cooling fans, expansion tanks, hoses, seals, and related hardware.
When a bulldozer starts running hot, the problem spreads fast from a clogged radiator or weak water pump to warped cylinder heads, failed seals, damaged hydraulic components, and expensive downtime. Even a minor leak or partially blocked cooling core will reduce efficiency and eventually cause overheating, reduced power, accelerated fluid breakdown, or machine shutdown.
Cooling components vary within the same dozer model based on the engine configuration, serial-number range, transmission arrangement, climate package, and production year. Provide the machine make, model, serial number, engine information, and existing part number when requesting pricing so our parts team will identify a compatible replacement.
Radiators
A dozer radiator removes heat from the engine coolant before the coolant returns to the engine. Air moves through the radiator core and carries heat away from the coolant flowing inside its tubes.
A radiator that can’t move air or holds less coolant causes the whole machine to run hot, and a hot engine is how you end up with a warped head and a repair that dwarfs the cost of the radiator. We stock aftermarket radiators built to match original cooling capacity. Because some radiators change between serial-number ranges on the same model, send us your serial number so the core and mounting match your machine exactly.
Find your current radiator’s OEM part number on your parts invoice or in your machine’s parts book. We will match your part number to our extensive inventory of aftermarket dozer radiators. Don’t see your OEM part number listed below? Send us a contact form with your serial number and we’ll cross-reference the equivalent.
- CAT 139-6887
- CAT 178-2486
- CAT 201-2670
- CAT 285-1982
- CAT 453-5917
- CAT 113-9539
- CAT 165-0080
- CAT 165-0081
- CAT 286-2639
- CAT 108-2387
- CCE R39432
- CCE S301079
- CCE 143135A1
- CCE 352383A3
- CCE 87449353
- CCE 84377348
- CCE 87411733
- CCE 87660639
- JD AT374931
- JD AT301068
- JD AT162415
- JD AT188181
- JD AT345543
- JD AT372717
This is just a partial list of OEM part numbers. Even if your part number is not listed here, we likely have an equivalent aftermarket part in stock. Contact us for our full inventory of aftermarket radiator parts.
All manufacturer names, symbols, brands, and OEM part numbers are used for identification and reference purposes only. EquipXR does not represent that any listed part is an OEM product. All part details should be verified with an EquipXR parts specialist prior to ordering to confirm aftermarket compatibility with your dozer make and model.
Water Pumps & Thermostats
The water pump circulates coolant through the engine block, cylinder head, thermostat housing, radiator, and connecting passages. Without sufficient coolant circulation, heat remains trapped in the engine, and temperatures rise rapidly. We stock water pumps and thermostats matched to your engine.
One tip from experience: if your engine has overheated, replace the thermostat even if the pump was the obvious culprit, since an overheat damages the thermostat’s temperature element and sets you up for a repeat failure.
Find your current water pump’s OEM part number on your parts invoice or in your machine’s parts book. We will match your part number to our extensive inventory of aftermarket dozer water pumps. Don’t see your OEM part number listed below? Send your OEM number or your engine model and serial number, and we’ll confirm the right pump or thermostat.
- CAT 485-4895
- CAT 557-9567
- CAT 350-2536
- CAT 352-0211
- CAT 7N-5909
- JD AR77142
- JD RE500734
- JD RE500737
- JD RE505980
- JD RE505981
- JD RE539091
- JD RE557899
- CCE A22570
- CCE A34009
- CCE 199352A1
- CCE J286278
- CCE 76194797
- KM 6141-61-1111
- KM 6144-61-1110
- KM 6275-61-1200
- KM 6754-61-1210
- KM 6154-61-1101
- KM 6124-61-1004
This is just a partial list of OEM part numbers, even if you do not see your part number listed here, we likely have the equivalent aftermarket part in stock. Contact us for our full inventory of aftermarket water pump and thermostat parts.
All manufacturer names, symbols, brands, and OEM part numbers are used for identification and reference purposes only. EquipXR does not represent that any listed part is an OEM product. All part details should be verified with an EquipXR parts specialist prior to ordering to confirm aftermarket compatibility with your dozer make and model.
Engine & Hydraulic Oil Coolers
Oil coolers are designed to handle the heat that the radiator doesn’t. The engine oil cooler keeps lubricating oil within the appropriate temperature range, and the hydraulic oil cooler dissipates the heat generated by the hydraulic system under pressure. The hydraulic cooler matters more than most operators realize, because hydraulic oil overheats while the engine coolant reads perfectly normal, and overheated hydraulic oil cooks the seals, hoses, and pumps it touches.
We stock engine and hydraulic oil coolers, including the integrated radiator-and-cooler assemblies some machines use. If your hydraulics are running hot but the engine isn’t, the hydraulic oil cooler is the first thing to check. Then our parts experts will confirm which part you need.
Oil coolers vary by machine and sometimes come integrated with the radiator. We will match your part number to our extensive inventory of aftermarket oil cooler parts. Don’t see your OEM part number listed below? Send your OEM number, engine model, and bulldozer serial number, and we’ll confirm the right engine oil cooler or hydraulic oil cooler.
- CAT 293-9367
- CAT 540-4465
- CAT 522-4870
- CAT 562-2915
- CAT 299-1994
- CAT 521-6481
- CAT 143-7397
- CAT 4P-0854
- CAT 10R-2312
- CAT 1W-0289
- JD AT345528
- JD AT304727
- JD AT374992
- JD AT372718
- JD AT418391
- JD AT372228
- JD AT423643
- JD AT367173
- JD AT486854
- JD DZ118742
- CCE N14008
- CCE 87411732
- CCE 84377349
- CCE 270389
- CCE 270389ED
- CCE 84377936
- CCE 37368051
- CCE 47576422
- CCE 291288A1
- CCE 8501296
- KM 17M-03-45111
- KM 14X-03-31211
- KM 14X-03-11214
- KM 14X-03-31231
- KM 14X-03-31232
- KM 154-03-75611
- KM 17A-03-23341
- KM 17M-03-41101
This is just a partial list of OEM part numbers, even if you do not see your part number listed here, we likely have the equivalent aftermarket part in stock. Contact us for our full inventory of aftermarket engine and hydraulic oil cooler parts.
All manufacturer names, symbols, brands, and OEM part numbers are used for identification and reference purposes only. EquipXR does not represent that any listed part is an OEM product. All part details should be verified with an EquipXR parts specialist prior to ordering to confirm aftermarket compatibility with your dozer make and model.
Charge Air Coolers & Aftercoolers
On turbocharged dozers, the charge air cooler cools the compressed intake air before it reaches the engine, which helps maintain efficient combustion and protects the engine from heat-related strain. It sits in the same stack as the radiator and takes the same debris and vibration, so a damaged or clogged charge air cooler will drag down performance and let intake temperatures climb. We stock charge air coolers and aftercoolers matched to your engine and machine. If you’ve lost power or noticed intake temperatures rising, this is the part to inspect alongside the radiator.
Charge air coolers are matched to your engine and machine configuration. Send your OEM number or your engine model and serial number and we’ll confirm the right charge air cooler part.
- CAT 253-5469
- CAT 498-0710
- CAT 503-6396
- CAT 1W-4879
- JD AT374993
- JD AT402103
- CCE 84490568
- KM 17M-03-51312
- KM 195-03-63121
- DT SP281686
- DT 21C1890
- DT 855020448
This is just a partial list of OEM part numbers. Even if your part number is not listed here, we likely have an equivalent aftermarket part in stock. Contact us for our full inventory of aftermarket water aftercoolers and charge air cooler parts.
All manufacturer names, symbols, brands, and OEM part numbers are used for identification and reference purposes only. EquipXR does not represent that any listed part is an OEM product. All part details should be verified with an EquipXR parts specialist prior to ordering to confirm aftermarket compatibility with your dozer make and model.
Fans, Hoses, Clamps & Caps
The supporting accessories and parts are cheap until they fail, but then they cause a bulldozer to overheat just as fast as a cracked radiator. The fan pulls air through the entire stack, hoses carry coolant between components, and the radiator cap maintains system pressure, which raises the coolant’s boiling point. An aging hose, a loose clamp, or a cap that won’t hold pressure is a common and easily missed cause of a hot machine. We stock fans, radiator and heater hoses, clamps, and pressure caps to round out a cooling repair. It’s worth replacing aging hoses and clamps while you’re already in the system, rather than going back in a month later when one fails.
These parts and accessories are matched to your machine and cooling configuration. Include your OEM part number, machine model, and serial number with your request, and we’ll get you the right replacement parts quickly.
- CAT 187-3961
- CAT 570-9259
- CAT 294-3342
- CAT 3E-7404
- CAT 321-7982
- CAT 372-6387
- CAT 372-6372
- CAT 372-6370
- CAT 438-8213
- CAT 118-8458
- CAT 628-0424
- CAT 387-4365
- CAT 345-1237
- JD T443983
- JD T443985
- JD AT173610
- JD T232932
- JD AT369328
- JD DZ118786
- CCE 84570432
- CCE 4470778
- CCE 87525506
- CCE A170241
- KM 14X-03-15211
- KM 14X-03-15220
- KM 708-7S-00352
- KM 600-614-2120
- KM 07053-10000
- KM 07299-00095
- DT 851013449
- DT 3972379
- DT 854-04-0111
- DT 855020150
This is just a partial list of cooling system hardware and accessory OEM part numbers. Even if your part number is not listed here, we likely have an equivalent aftermarket part in stock. Contact us for our full inventory of aftermarket parts.
All manufacturer names, symbols, brands, and OEM part numbers are used for identification and reference purposes only. EquipXR does not represent that any listed part is an OEM product. All part details should be verified with an EquipXR parts specialist prior to ordering to confirm aftermarket compatibility with your dozer make and model.
OEM-Equivalent Aftermarket Dozer Cooling System Parts
The fastest way to order the right parts is with the OEM part number you’re replacing. Every radiator, pump, cooler, and fan we stock is cataloged against the OEM numbers it replaces, so a number from your CAT, Komatsu, Deere, CASE, Hitachi, Liebherr, or Dressta parts book gets you straight to an exact-fit aftermarket equivalent.
Don’t have your OEM part number available? Your machine’s model, engine model, and serial number will provide us a good starting place. Cooling parts fit by engine application and often change between serial-number ranges on the same model, so the engine model and serial number together are the most reliable way to confirm fit.
Cooling Parts Compatibility by OEM Bulldozer Brand
We supply aftermarket cooling system parts for the dozer brands below, covering compact crawler dozers through large production machines across multiple engine generations. Fit depends on engine model, machine configuration, and serial range, not brand alone, so treat this table as a starting point and confirm your spec with our parts team before ordering.
| Brand | Dozer Coverage | Common Parts |
|---|---|---|
| Caterpillar (CAT) | Small through large crawler dozers | Radiators, water pumps, oil coolers, charge air coolers, fans |
| Komatsu | D20 through D155 series | Radiators, oil coolers, charge air coolers, water pumps |
| John Deere | Crawler dozer lineup | Radiators, oil coolers, water pumps |
| CASE | 650 through 850K series | Radiators, hydraulic oil coolers, water pumps, fans |
| Hitachi | Crawler dozer lineup | Radiators, oil coolers, water pumps |
| Liebherr | Crawler dozer lineup | Radiators, oil coolers, water pumps |
| Dressta | Crawler dozer lineup | Radiators, coolers, water pumps |
All manufacturers’ names, symbols, brands, and part numbers are used for reference purposes only. Those references help identify compatibility and do not indicate that any listed part is an OEM product.
Why Is My Dozer Overheating? Common Signs To Watch For
A dozer usually overheats because it cannot move enough heat out of the engine. Common causes include:
- Clogged radiator, oil cooler, or charge-air cooler from dust, mud, chaff, or debris
- Low coolant, coolant leak, or incorrect coolant mix
- Loose, damaged, or blocked fan belt; failed fan clutch or fan motor
- Bad thermostat or failing water pump
- Collapsed, cracked, or restricted coolant hoses
- Dirty or restricted air intake causing the engine to work harder
- Low engine oil or hydraulic oil, or a plugged hydraulic cooler
- Heavy load, high ambient temperature, or operating at excessive RPM for the conditions
- Head-gasket, combustion-gas, or internal engine issue if coolant is disappearing, bubbling, or pressurizing unusually
If the temperature warning comes on, reduce load and idle down. If it stays hot, shut it down and let it cool down.
Keeping Your Equipment In The Right Temperature Range
The cooling system rewards routine attention more than almost any other system on your bulldozer, because most cooling failures are preventable. Clean the radiator and cooler stack on a schedule that matches how dirty your work is, daily cleaning may be needed during work in heavy dust (never use a pressure washer up close because it will bend the fins).
Check coolant level and condition regularly, top off with the correct type, and flush the coolant at the interval your manual specifies. Replace hoses and clamps before they fail rather than after, since a five-dollar hose overheats a machine just as easily as a cracked radiator.
Watch the temperature gauges, both engine and hydraulic, and treat a slow climb as a signal to inspect the stack rather than something that your operator can push through. A cooling system that’s kept full and clean will do its job almost indefinitely, and the parts we offer are mostly for when prevention runs out or debris finally wins.
Frequently Asked Questions About Dozer Cooling Systems
The most common cause is clogged radiator or oil cooler fins choking off airflow, which no amount of coolant will fix. The other big one is hydraulic oil overheating, which can climb while engine coolant reads normal because the hydraulic system makes its own heat under pressure. Start by cleaning the cooler stack, then check the hydraulic oil cooler.
Use compressed air or low-pressure water, working from the engine side outward and moving along the fins rather than across them so you don’t bend them. On a heavily packed stack, the oil coolers often have to be separated from the radiator to reach the inner surfaces, which is why a proper cleaning can take hours. In dusty or debris-heavy work, check and clean the stack frequently rather than waiting for a warning.
Use the coolant type specified in your machine’s manual, and don’t mix coolant types. Mixing different coolant chemistries, such as ethylene glycol and propylene glycol, can form a gel that clogs the system and defeats the cooling you’re trying to protect. If you’re switching types, flush the system thoroughly first. Following the OEM coolant and flush interval (typically around 1,000 hours or annually) will prevent many cooling problems.
Watch for coolant leaking near the pump, a whining or grinding bearing noise, a wobbling pulley, and an engine running hot due to reduced circulation. A failing pump can’t move coolant fast enough to shed heat, so it tends to show up as overheating under load. Catching it early, before it strands the machine or contributes to an overheat, is the cheaper option in the long term.
Yes. Overheating can damage the thermostat’s wax temperature element, and a thermostat that no longer opens fully sets you up for another overheat. A thermostat is inexpensive relative to the engine it protects, so replacing it after any overheat event is worth doing even if another part was the original cause.
That points to the hydraulic side of the cooling package, not the engine. The hydraulic system generates its own heat under pressure, and a clogged or failing hydraulic oil cooler, or restricted airflow through the stack, allows that heat to build while the engine coolant remains normal. It’s a commonly misdiagnosed problem. Check and clean the hydraulic oil cooler first, since excessive hydraulic heat shortens the life of seals, hoses, and pumps.
It depends on the damage. A radiator with cracked or corroded tubes or a damaged core usually needs replacement, while a cooling problem caused by a clogged stack, a bad hose, a worn cap, or a failing thermostat is a much cheaper fix. Diagnosing the real cause before ordering saves you from having to replace a good radiator.
Give us the OEM part number of the component, along with your machine’s model, engine model, and serial number. Cooling parts fit by engine application, and radiators in particular can change between serial-number ranges, so providing the engine model and serial number together is valuable context when ordering parts. EquipXR’s parts experts will confirm fit with you before anything ships.
Related Dozer Engine & Hydraulic Parts
The cooling system protects two expensive systems, so the parts it guards are worth thinking about together. Dozer engine parts depend on the cooling package to avoid warped heads and the damage that sustained overheating causes, and a cooling repair is a good time to inspect related engine components. Dozer hydraulic parts are just as dependent, since overheated oil destroys seals, hoses, and pumps, which means a healthy hydraulic oil cooler protects the whole hydraulic system. We stock all of these parts. See our dozer transmission, engine, and dozer fuel system parts pages, or ask for a combined quote with your cooling order.
Why Buy Cooling Parts From EquipXR
We’re a parts supplier built around the dozers and heavy equipment you use every day. EquipXR is run by people who know how these machines run and how they overheat. Here’s what that means when you order cooling parts from us:
The Whole Cooling System
Radiators, water pumps, thermostats, oil coolers, charge air coolers, fans, hoses, and caps, so you can fix the cooling system from one supplier instead of chasing parts across several.
Fit Confirmed by Engine and Serial
Cooling parts fit by engine application, so we check every order against your engine model and serial number. If something doesn’t cross-reference cleanly, we call you before we ship, not after.
OEM-Equivalent Quality
Heavy aluminum cores and rugged construction built to match original cooling capacity and survive jobsite debris and vibration, at a price well under dealer cost.
Fast Quotes, Fast Shipping
Same-day quotes on most requests and quick turnaround on in-stock parts, because a down dozer isn’t earning.
Get The Cooling System Parts Your Construction Equipment Needs
Send your machine model, engine model, and serial number, your OEM part number, or a description of how the machine is overheating, and we’ll come back with the right parts and a price, usually the same day. Call us or use the quote form to get started.