Product Description
Interstate-McBee M-3958165 Oil Pan Gasket — 2003–2007 5.9L Cummins (Aftermarket Replacement)
OE-style replacement oil pan gasket for the 2003–2007 Dodge Ram 2500/3500 equipped with the 5.9L Cummins ISB (24-valve). Designed for reliable sealing and long service life. Sold individually.
- Direct replacement: Matches OE form and fit for straightforward installation.
- Reliable seal: Helps prevent leaks when surfaces are cleaned and fasteners torqued to spec.
- Service-ready: Ideal for pan replacement, reseal jobs, or engine refresh work.
- Value: Interstate-McBee quality at a competitive price point.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3958165 |
| OEM Reference | Cummins 3958165 |
| Application | Oil Pan Gasket |
| Sold As | Each (1 gasket) |
| Quantity Required | 1 per engine |
What’s Included
- (1) Oil pan gasket, P/N M-3958165
Vehicle Fitment
For best results, verify by engine serial number (ESN) and OE part number.
- Dodge Ram 2500/3500 with 5.9L Cummins ISB (24-valve, common-rail)
- Model Years: 2003, 2004, 2005, 2006, 2007
- Additional ISB B-Series applications where Cummins 3958165 is specified.
Recommended / Related Parts
- Oil pan bolt set or individual replacement fasteners (if corroded or stretched)
- Brake cleaner / solvent and lint-free wipes for flange prep
- Threadlocker or sealant only if specified by your service manual
- Engine oil and filter (if performing an oil service during the repair)
Install Notes
- Drain engine oil and remove the oil pan; clean both mating surfaces until free of oil and old gasket material.
- Lay the new gasket in position; ensure all holes align with the block and pan.
- Start all fasteners by hand; tighten in a criss-cross pattern to factory torque spec.
- Do not over-tighten; re-torque after an initial heat cycle if your service manual calls for it.
- Avoid additional RTV/sealant unless the OEM procedure specifies its use at joints or corners.
Why Buy From CPP Diesel
- Knowledgeable diesel support and ESN-verified fitment assistance
- Fast shipping and hassle-free returns
- Extensive inventory for Cummins B-Series service parts
FAQ
Does this fit all 5.9L Cummins trucks from 2003–2007?
Yes, it is intended for the 24-valve common-rail 5.9L Cummins ISB used in 2003–2007 Dodge Ram 2500/3500. Always verify by ESN and OE part number.
Do I need sealant with this gasket?
Generally, use the gasket dry on clean, flat surfaces. Apply sealant only if your service manual specifies it for specific joints or corners.
Are bolts included?
No. Reuse serviceable hardware or replace with new fasteners if corroded or out of spec.
