Product Description
Interstate-McBee M-4932376 Rod Bearing — .020" Undersize | 1989–2002 5.9L Cummins B-Series
High-quality aftermarket replacement rod bearing set sized for a crankpin ground .020" undersize (0.50 mm). Built for dependable oil control and long service life in 5.9L Cummins B-series engines. Ideal for stock refreshes and standard rebuilds.
- Correct sizing: .020" undersize (0.50 mm) for reground crankpins.
- OE-style fit: Designed to meet factory geometry and crush/clearance targets.
- Reliable materials: Aftermarket formulation for daily duty and towing.
- Service friendly: Clearly marked shells for straightforward installation.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-4932376 |
| Size | .020" undersize (0.50 mm) — crankpin |
| Engine | 5.9L Cummins B-Series (12-valve & 24-valve) |
| Years | 1989–2002 |
| Position | Connecting rod bearing |
| Sold As | Rod bearing pair (upper & lower shells) for one rod journal* |
*Most listings supply a pair for one cylinder. Verify quantity in cart if building a complete engine (6 cylinders = 6 pairs).
Vehicle Fitment
Always verify by engine serial number (ESN) and crank grind size.
- Dodge Ram 2500/3500 5.9L Cummins (B-Series)
- 12-Valve: 1989–1998
- 24-Valve: 1998.5–2002
- Other B-Series applications using the 5.9L Cummins where .020" undersize rod bearings are specified.
What’s Included
- (2) Bearing shells: upper & lower for one connecting rod journal
Install Notes
- Confirm crankpin size (.020" undersize / 0.50 mm) before ordering.
- Measure oil clearance with plastigage or micrometers during mock-up.
- Cleanliness is critical: degrease journals and shells; keep debris out.
- Lubricate with assembly lube and torque rod bolts to factory spec.
- Check side clearance and bearing crush; rotate freely after torque.
Why Buy From CPP Diesel
- Diesel-focused fitment help and ESN guidance
- Fast shipping and easy returns
- Deep inventory of matching bearings, rings, gaskets, and hardware
FAQ
What does .020" undersize mean?
It means the crank rod journals have been ground .020" (0.50 mm) smaller than stock. Bearings are thicker to restore correct oil clearance.
How many do I need for a full rebuild?
Six pairs cover all six cylinders. Verify your cart quantity before checkout.
Can I mix standard and undersize bearings?
Only match the bearing size to the actual grind on each journal. If one journal is .020" and others are standard, use the correct size per journal.
Will this fit both 12-valve and 24-valve 5.9L engines?
Yes, this listing covers 1989–2002 5.9L Cummins B-series engines; confirm your crank grind size before purchase.
