Product Description
Cummins 4945701 — Bellhousing Adapter Cam Seal (Rectangular Ring)
MPN: 4945701 | Also Known As: cam port seal, adapter plate-to-block seal, rectangular ring | Replaces: 3947328
Why This Part
- ✓ OE rectangular-ring seal for the cam port at the rear adapter plate.
- ✓ Direct-fit for 2003–2007 5.9L & 2007.5–2024 6.7L Cummins (verify by VIN/ESN).
- ✓ Helps prevent oil leaks between the block and bellhousing adapter.
- ✓ Genuine Cummins material & profile for reliable sealing.
Quick Specs
| Type | Rectangular-ring cam port seal (adapter plate to block) |
|---|---|
| OE Part # | 4945701 (replaces 3947328) |
| Qty Required | 1 per engine (sold individually) |
| Primary Use | ISB/QSB platforms; commonly on Ram 5.9L & 6.7L |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2003–2007 | Ram 5.9L ISB (24V Common-Rail) | Ram 2500/3500 |
| 2007.5–2024 | Ram 6.7L ISB (24V Common-Rail) | Ram 2500/3500 |
Notes: Cummins lists this as a rectangular-ring seal used primarily on EPA13+ 6.7L ISB/QSB engines; many automotive sellers cover 2003–2024. Always confirm by VIN/ESN.
Often Paired With
- Rear main seal (if you’re already in the bellhousing area)
- Adapter plate hardware if corroded or damaged
- Fresh oil & filter if contamination or leak was present
What’s In The Box
- (1) Genuine Cummins Rectangular-Ring Cam Port Seal (4945701)
Install Tips
- Clean sealing surfaces thoroughly; avoid nicks or scratches.
- Lightly lubricate the seal; align carefully in the adapter plate recess.
- Torque adapter plate hardware to spec; recheck for leaks after warm-up.
FAQ
WILL THIS FIT MY 2003–2024 RAM 5.9L/6.7L?Yes—commonly used on 2003–2007 5.9L and 2007.5–2024 6.7L Ram applications. Always verify by VIN/ESN.
WHAT DOES THIS SEAL DO?It seals the camshaft port in the rear adapter plate area between the block and bellhousing adapter to prevent oil leaks.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 4945701 with the correct rectangular-ring profile and material.
WHAT NUMBER DOES IT REPLACE?It supersedes/ replaces Cummins 3947328 (common cross-reference).
DO I NEED ANYTHING ELSE WHILE I’M IN THERE?Consider a rear main seal and inspecting adapter plate hardware. If there was contamination, change oil & filter.
