Product Description
Interstate-McBee M-3918673 Gear Cover Gasket – 1994–2002 5.9L Cummins
Direct-fit replacement front timing gear cover gasket for 5.9L Cummins B-Series engines found in 1994–2002 Dodge Ram 2500/3500 trucks. Built to OE form, fit, and function to seal the timing gear housing to the engine block. Sold individually.
- OE-style seal: Matches factory profile and bolt pattern for a proper seal.
- Reliable materials: Designed to handle heat, oil splash, and vibration at the front cover.
- Service friendly: Ideal for timing cover reseal jobs or when servicing the front main area.
- Value: Interstate-McBee quality as an economical aftermarket replacement.
What’s Included
- (1) Gear cover gasket, P/N M-3918673
Vehicle Fitment
Always verify by engine serial number (ESN) and OEM part number.
- Dodge Ram 2500/3500 with 5.9L Cummins B-Series
- Model Years: 1994–2002
- Engine Variants: 12-valve (1994–1998) and 24-valve ISB (1998.5–2002)
- Other B-Series applications where Cummins 3918673 is specified (confirm by ESN).
Recommended/Related Parts
- Front crankshaft seal (front main seal)
- Timing cover seals and grommets
- RTV/sealant for specified joints (per service manual)
- New hardware if corroded or damaged
Install Notes
- Clean mating surfaces thoroughly; remove old gasket material without gouging aluminum surfaces.
- Dry-fit the gasket to confirm bolt hole alignment; install per Cummins torque specs and sequence.
- Use sealant only where the service manual specifies (corner joints, split lines, etc.).
- Inspect crank seal area; replace the front main seal if there is any seepage or wear groove.
Why Buy From CPP Diesel
- ESN-verified fitment help from diesel specialists
- Fast shipping and easy returns
- Extensive inventory of Cummins B-Series gaskets and seals
FAQ
Is this the gasket between the timing gear cover and the block?
Yes—this seals the timing gear (front) cover to the engine block.
Does it fit both 12-valve and 24-valve 5.9L engines?
Yes, it covers 1994–1998 (12-valve) and 1998.5–2002 (24-valve ISB) applications where Cummins 3918673 is specified. Verify by ESN to be sure.
Do I need sealant with this gasket?
Follow the Cummins service manual. Some joint corners or split lines may require a small amount of RTV in addition to the gasket.
| Brand | Interstate-McBee |
| Part Number | M-3918673 |
| UPC | Not specified by manufacturer/seller |
| GTIN | Not specified by manufacturer/seller |
| Shipping Info | Package weight: 0.10–0.20 lb typical for single gasket (exact weight not specified). Other shipping dimensions/method: Not specified. |
| Cross Reference | Primary OE reference: Cummins 3918673 (gear housing/front cover gasket, 5.9L 12V/24V). Functional description: Gear cover gasket for 1994–2002 5.9L Cummins B-series engines. |
| E-Codes | Not specified |
| Prop 65 | WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: https://www.P65Warnings.ca.gov |
