Product Description
Cummins 3958165 — Engine Oil Pan Gasket
MPN: 3958165 | Also Known As: oil pan gasket | Cross-Refs: Cummins 3947685; Mopar 5086855AA, 68027065AA, 68038159AA
Why This Part
- ✓ OE sealing to stop oil pan leaks and maintain oil pressure.
- ✓ Direct-fit for Ram 5.9L/6.7L applications in this range (verify by VIN/ESN).
- ✓ Correct bolt pattern and materials for long service life.
- ✓ Ideal whenever the oil pan is removed or replaced.
Quick Specs
| Type | Engine oil pan gasket |
|---|---|
| OE Part # | 3958165 |
| Qty Required | 1 per engine (sold individually) |
| Cross-References | 3947685; Mopar 5086855AA, 68027065AA, 68038159AA |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2003–2007 | Ram 5.9L ISB (24V Common-Rail) | Ram 2500/3500 |
| 2007.5–2012 | Ram 6.7L ISB (24V Common-Rail) | Ram 2500/3500/4500/5500 |
Notes: This covers most 2003–2012 Ram 5.9L/6.7L applications. Later 2013+ 6.7L models may use different pans/gaskets—always verify by VIN/ESN.
Often Paired With
- Oil Pan: Cummins 3949769 (’03–’07 5.9L)
- Oil Pan Bolt Kit: XDP XD621 (hardware refresh)
- Pickup (Suction) Tube Gasket & O-Rings: 3957486, 4936940, 4943167
- Fresh oil & filter after service
What’s In The Box
- (1) Genuine Cummins Engine Oil Pan Gasket (3958165)
- Hardware and related seals sold separately (see “Often Paired With”).
Install Tips
- Clean mating surfaces thoroughly; remove old sealant/gasket material.
- Follow torque sequence/spec; recheck after initial heat cycle if required.
- Inspect pickup tube O-rings and replace if hardened or flattened.
FAQ
WILL THIS FIT MY 2003–2012 5.9L/6.7L CUMMINS RAM?Yes—this gasket is commonly listed for 2003–2007 5.9L and 2007.5–2012 6.7L Ram applications. Always verify by VIN/ESN.
DO I NEED NEW BOLTS OR SEALANT?New hardware is recommended if corroded; many techs add an oil-resistant sealant at corners per service manual. Consider a bolt kit if yours are worn.
WHAT ARE THE COMMON CROSS-REFERENCE NUMBERS?Cummins 3947685 and Mopar 5086855AA, 68027065AA, 68038159AA are frequently referenced for this application.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3958165 for proper fit and sealing.
SHOULD I REPLACE PICKUP TUBE SEALS TOO?It’s smart to replace the pickup (suction) tube gasket and O-rings (3957486, 4936940, 4943167) during service to prevent future leaks or aeration.
