Product Description
Interstate-McBee M-4945701 Rear Camshaft / Bellhousing Adapter Seal – 03–21 5.9L/6.7L Cummins
Direct-fit rectangular ring (rear cam/bellhousing adapter seal) that sits between the block and adapter plate to seal the cam port on 2003–2021 5.9L & 6.7L Cummins engines. OEM-style material and profile for reliable leak prevention and quick service.
- OEM-style fit: Matches Cummins profile for trouble-free installation.
- Leak fix at the source: Seals the camshaft port at the bellhousing adapter.
- Aftermarket value: Interstate-McBee quality at a fraction of OEM box pricing.
- Durable elastomer: Rectangular ring design maintains sealing under heat and vibration.
Specifications
| Interstate-McBee Part | M-4945701 |
|---|---|
| OEM Cross-Reference | 4945701 (Cummins) |
| Supersedes/Replaces | 3947328 (earlier design) |
| Type | Rectangular ring, rear cam/bellhousing adapter seal |
| Position | Adapter plate to block (camshaft port) |
| Material | High-grade elastomer |
| What’s Included | (1) Rectangular ring seal |
Vehicle Fitment
Verify by engine serial number (ESN) for best results.
- Dodge/Ram 2500/3500 – 5.9L Cummins ISB (24V): 2003–2007
- Dodge/Ram 2500/3500 – 6.7L Cummins ISB: 2007.5–2021
Install Notes
- Clean the adapter plate and block groove thoroughly; remove old seal residue.
- Lightly lubricate the new seal (clean engine oil) to avoid pinching.
- Inspect crankcase ventilation and rear main area for unrelated leaks before reassembly.
Warranty
Interstate-McBee new-part warranty applies; contact us for category-specific terms on sealing components.
Why Buy From CPP Diesel
- ESN-verified fitment help for Cummins ISB platforms
- Fast shipping and easy returns
- Curated B-Series/ISB sealing solutions for complete leak fixes
FAQ
Is this the same as a rear main seal?No—this is the rear camshaft/bellhousing adapter rectangular ring. The rear main seal is a separate crankshaft seal.
Will it fit both 5.9L (2003–2007) and 6.7L (2007.5–2021)?
Yes—this seal is used across 2003–2021 ISB platforms. Always verify by ESN for edge cases.
What part does this replace?
It cross-references Cummins 4945701 and supersedes 3947328 (earlier design).
Any sealant required?
No RTV is used on the ring itself. Clean the groove, lightly oil the seal, and install per Cummins procedure.
Signs I need this seal?
Oil seepage at the adapter plate/bellhousing area after ruling out rear main seal and valve cover/CCV sources.
Product Videos
Custom Field
YEAR 2003-2018
MAKE DODGE
ENGINE 5.9L,6.7L
