Product Description
Interstate-McBee M-4890833 Rear Crankshaft Oil Seal – 98.5–02 5.9L Cummins 24-Valve
Direct-replacement rear main (rear crankshaft) oil seal for the 1998.5–2002 Dodge Ram 2500/3500 equipped with the 5.9L Cummins 24-valve ISB. Built to OE form, fit, and function to restore a clean, leak-free seal at the rear of the crankshaft. Sold individually.
- OE-equivalent performance: Manufactured to match the sealing profile and material of the factory unit.
- Correct fitment: For ISB 5.9L 24-valve engines used mid-1998 through 2002 (verify by ESN when possible).
- Service-friendly: Ideal for engine reseal jobs, transmission/clutch work, or rear cover service.
- Value: Interstate-McBee quality and consistency at a competitive price point.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-4890833 |
| OEM Reference | Cummins 4890833 |
| Engine | 5.9L Cummins ISB (24-valve) |
| Position | Rear crankshaft (rear main) |
| Sold As | Each (1 oil seal) |
What’s Included
- (1) Rear crankshaft oil seal, P/N M-4890833
Vehicle Fitment
Always verify by engine serial number (ESN) when available.
- Dodge Ram 2500/3500 with 5.9L Cummins ISB (24-valve)
- Model Years: 1998.5–2002
- Additional ISB 5.9 applications where Cummins 4890833 is specified (confirm by ESN).
Installation Notes
- Use the proper rear main seal installer to ensure square, consistent seating depth.
- Inspect the crankshaft sealing surface; if a groove is present, consider a repair sleeve kit (not included).
- Clean the bore and rear cover thoroughly; follow the Cummins service manual for orientation and prep.
- Some seals specify dry vs. lightly oiled installation—follow the instructions provided with your seal.
Why Buy From CPP Diesel
- Diesel specialists with ESN-verified fitment support
- Fast shipping, easy returns, and competitive pricing
- Deep inventory of complementary Cummins gaskets, seals, and hardware
FAQ
Will this fit my 1998.5–2002 5.9L Cummins?
Yes—this listing covers the 24-valve ISB 5.9L used from mid-1998 through 2002 in Ram 2500/3500 trucks. For other ISB/B-series uses, verify by ESN.
Does it include a repair sleeve or tool?
No. This listing is for the oil seal only. If your crank has a wear groove, order a repair sleeve kit separately. Installation tools are not included.
Can I install this with the transmission in the truck?
Many technicians perform the job during clutch or transmission service since the transmission must typically be removed for access. Follow the factory service procedure.
