Product Description
Interstate-McBee M-4895742 Oil Cooler Gasket – 03–07 5.9L Cummins (Aftermarket Replacement)
Direct-fit oil cooler gasket for the 2003–2007 Dodge Ram 2500/3500 with the 5.9L Cummins ISB (24-valve common-rail). Designed to restore a proper seal between the oil cooler housing and engine block to help prevent oil/coolant cross-leaks and seepage. Sold individually.
- Direct replacement: Matches OE form, fit, and function for dependable sealing.
- Correct fitment: Interchangeable with Cummins reference 4895742 for ISB 5.9L applications (verify by ESN for best results).
- Service friendly: Ideal when resealing or replacing the oil cooler assembly.
- Value: Interstate-McBee quality at an aftermarket price point.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-4895742 |
| OEM Reference | Cummins 4895742 |
| Location | Oil cooler housing to engine block |
| Sold As | Each (1 gasket) |
What’s Included
- (1) Oil cooler gasket, P/N M-4895742
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 with 5.9L Cummins ISB (24-valve common-rail)
- Model Years: 2003–2007
- Other B-Series ISB 5.9L applications where Cummins 4895742 is specified (confirm by ESN).
Recommended/Related Parts
- Oil cooler core or complete cooler assembly (inspect and replace if contaminated or damaged)
- Fresh engine coolant and engine oil for service
- New O-rings/seals for oil lines as needed
- Brake-clean and lint-free wipes for surface prep
Install Notes
- Drain engine coolant and oil per service manual; capture and dispose of fluids responsibly.
- Clean mating surfaces to bare metal; do not scratch or gouge the block or housing.
- Install gasket dry unless your service manual specifies otherwise; avoid RTV unless directed.
- Torque fasteners in a criss-cross pattern to factory spec; recheck for leaks after warm-up.
Why Buy From CPP Diesel
- Diesel-specialist support with ESN-verified fitment
- Fast shipping and easy returns
- Wide selection of complementary Cummins ISB service parts
FAQ
Will this fit my 2003–2007 5.9L Cummins Ram?
Yes. This gasket covers the 5.9L Cummins ISB (24-valve common-rail) used in 2003–2007 Ram 2500/3500. For edge cases or non-truck applications, verify by ESN.
Do I need sealant with this gasket?
Typically no—install the gasket dry on clean, flat surfaces unless your service manual specifies a sealant. Avoid excess RTV which can contaminate the cooling or oil system.
What else should I replace during this job?
Consider fresh coolant, engine oil/filter, and any crushed or worn O-rings. Inspect the oil cooler core for debris or damage.
Does this fit the 6.7L Cummins?
No. This part is intended for 5.9L ISB (2003–2007). Use the correct gasket for 6.7L applications.
