Product Description
Interstate-McBee M-3958165 Oil Pan Gasket – 03–07 5.9L Cummins
OE-style oil pan gasket engineered by Interstate-McBee for 2003–2007 Dodge Ram 2500/3500 with 5.9L Cummins. Designed to match OEM dimensions for a reliable, leak-free seal and long service life—ideal anytime the oil pan is removed.
- Direct-fit replacement: Matches OEM Cummins 3958165 dimensions for precise sealing.
- OE-style construction: One-piece molded gasket for consistent clamp load and easy install.
- Aftermarket value: Interstate-McBee quality at a better price point than OEM.
Specifications
| Interstate-McBee PN | M-3958165 |
|---|---|
| OEM Cross-Reference | Cummins 3958165 |
| Additional Cross-Refs | 3957486; PAI 131697 (reference only—verify ESN) |
| Application | Oil pan to cylinder block sealing |
| Shipping Ref. | ~1.0 lb; ~32" × 13" × 1" (for logistics planning) |
Vehicle Fitment
Always verify fitment by engine serial number (ESN) for best results.
- Dodge Ram 2500/3500 — 5.9L Cummins ISB (24-Valve, Common-Rail)
- Model Years: 2003, 2004, 2005, 2006, 2007
Note: This part number is also used on select B/ISB applications outside of Dodge Ram; verify by ESN.
Install Tips
- Clean all mating surfaces thoroughly; remove old sealant and debris.
- Dry-fit the gasket to confirm alignment; avoid over-tightening fasteners.
- Follow the Cummins service manual for torque values and tightening sequence.
Warranty
Interstate-McBee new engine parts typically carry up to 24 months of warranty coverage from date of installation (diesel applications). See manufacturer policy for details, exclusions, and valve-train exceptions.
Why Buy From CPP Diesel
- ESN-verified fitment support from real diesel techs
- Fast shipping and hassle-free returns
- Deep catalog coverage across Cummins B-Series components
FAQ
Will M-3958165 fit my 2003–2007 5.9L Cummins?Yes. It’s specified for 03–07 Dodge Ram 2500/3500 with the 5.9L ISB. Verify by ESN if your engine has been swapped or rebuilt.
Is this an OEM Cummins part?
No. This is an aftermarket OE-style replacement by Interstate-McBee. It cross-references OEM Cummins 3958165.
Does it require sealant or RTV?
Only where the Cummins service manual specifies (typically at corners or joints). Do not over-apply RTV as it can affect sealing.
What else should I replace while I’m in there?
Inspect the oil pan for warpage, replace pan bolts if stretched, and consider a fresh drain plug/seal. Check front/rear main areas for leaks.
Product Videos
Custom Field
YEAR 2003-2007
MAKE DODGE
ENGINE 5.9L
