Product Description
The CUMMINS 3957544 OEM ENGINE OIL COOLER is designed for 1989–2002 5.9L Cummins 6BT and ISB diesel engines. This genuine Cummins oil cooler is built to help regulate engine oil temperatures, maintain proper lubrication performance, and support long-term engine reliability.
Use this part when servicing a leaking oil cooler, performing a complete engine rebuild, or replacing a damaged factory oil cooling assembly. Always verify fitment by year, make, model, engine, and part number before ordering.
FEATURES
- Genuine Cummins OEM replacement engine oil cooler
- Designed for 1989–2002 5.9L Cummins applications
- Helps maintain proper engine oil temperature
- Supports engine lubrication and durability
- Direct-fit replacement for factory oil cooler assembly
- Recommended during engine repair or overhaul work
FITMENT
- 1989–1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24-Valve
- Select Cummins 6BT and ISB industrial applications
WHAT'S INCLUDED
- 1 Cummins 3957544 OEM Engine Oil Cooler
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3957544
- Cummins oil cooler gasket kits
- Cummins oil filter and lubrication system service components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3957544
- Part Type: Engine Oil Cooler
- Engine Compatibility: 5.9L Cummins 6BT, 5.9L Cummins ISB
- Fitment Years: 1989–2002
- Vehicle Application: Dodge Ram 2500 and 3500
- Condition: New OEM Cummins
- Cooling System: Engine Oil
- Price: Contact CPP Diesel for Current Pricing
FAQ
Will this part fit my truck?
This oil cooler fits many 1989–2002 Dodge Ram 5.9L Cummins applications. Always verify fitment using your engine serial number and Cummins part number before ordering.
Is this a direct replacement?
Yes. Cummins 3957544 is designed as a direct-fit OEM replacement engine oil cooler for the listed applications.
What is included?
This listing includes one Cummins 3957544 OEM engine oil cooler.
What does the engine oil cooler do?
The oil cooler helps regulate engine oil temperatures, protecting internal engine components and maintaining proper lubrication under load.
Should I replace gaskets during installation?
Yes. It is recommended to inspect and replace any oil cooler gaskets, seals, and related hardware during installation to help prevent leaks.
Do I need any related parts?
Inspect the lubrication system, oil filter housing, oil cooler seals, and related components during service and replace worn parts as necessary.
Prop 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
