Product Description
CUMMINS 3958165 OEM ENGINE OIL PAN GASKET – RAM 5.9L/6.7L (2003–2012)
Genuine Cummins 3958165 OEM Oil Pan Gasket delivers the reliable, leak-free sealing you expect when servicing or removing the oil pan on 2003–2012 Ram 2500 / Ram 3500 / 4500 / 5500 trucks with 5.9L or 6.7L ISB engines. This direct-fit gasket is engineered to exact factory specifications — correct bolt pattern, sealing surface and material integrity — ensuring proper oil pressure maintenance and long service life under heavy diesel duty. Ideal for any rebuild, pan replacement, or routine maintenance where leak prevention and OE-level durability matter most.
Fitment & Compatibility
- 2003–2007 Ram 2500/3500 5.9L ISB (24-valve common-rail)
- 2007.5–2012 Ram 2500/3500/4500/5500 6.7L ISB (24-valve common-rail)
- Also cross-references: Cummins 3947685; Mopar 5086855AA, 68027065AA, 68038159AA
Why Choose This OEM Gasket?
- OE-correct sealing surface to prevent oil leaks and maintain proper pressure under load.
- Direct fit — no modification or trimming required when replacing the oil pan or resealing.
- Sold individually — 1 gasket required per engine.
- Recommended whenever oil pan is removed or replaced to ensure leak-free service life.
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 before ordering.
DO I NEED NEW BOLTS OR SEALANT?
New hardware is recommended if bolts are corroded or worn. Many technicians add oil-resistant sealant at corners per service manual, but only if specified.
WHAT ARE THE COMMON CROSS-REFERENCE NUMBERS?
Cummins 3947685; Mopar 5086855AA, 68027065AA, 68038159AA.
IS THIS A GENUINE CUMMINS PART?
Yes — this is the OEM-spec 3958165 gasket from Cummins, ensuring proper fit and longevity.
SHOULD I REPLACE PICKUP TUBE SEALS TOO?
It is best practice to inspect and, if necessary, replace the pickup (suction) tube gasket and O-rings (e.g. part numbers 3957486, 4936940, 4943167) when resealing the oil pan to prevent future leaks or aeration.
Specifications
| Specifications for Cummins 3958165 | |
|---|---|
| Brand | Cummins |
| Part Number (OEM) | 3958165 |
| Cross Reference | Cummins 3947685; Mopar 5086855AA, 68027065AA, 68038159AA |
| Fitment | Ram 5.9L / 6.7L ISB (2003–2012 Ram 2500/3500/4500/5500) Diesel Engines |
| Quantity Required | 1 per engine |
| Shipping Info | Calculated at checkout (ships in protective packaging) |
| UPC / GTIN | |
| E-Codes / Prop 65 | |
Cross-Reference / Alternatives:
• Cummins 3947685 Oil Pan Gasket
• Mopar 5086855AA Oil Pan Gasket (Mopar equivalent)
• Mopar 68027065AA Oil Pan Gasket (Mopar equivalent)
• Mopar 68038159AA Oil Pan Gasket (Mopar equivalent)
