Product Description
Cummins 4932375 — Upper Connecting Rod Bearing (.010) for ISB 5.9L/6.7L
MPN: 4932375 | Also Known As: upper con rod bearing shell, rod bearing (.010 undersize) | Size: .010" (0.25 mm) undersize | Sold: Per shell (upper / piston side)
Why This Part
- ✓ OE bearing shell for fracture-split (“cracked-cap”) rods used on 2003+ ISB.
- ✓ .010" undersize for reground crank journals; restores proper oil clearance.
- ✓ Drop-in fit on 5.9L/6.7L common-rail applications (verify by VIN/ESN).
- ✓ Sold individually—order 6 upper shells per engine; pair with matching 6 lower shells.
Quick Specs
| Type | Upper (piston-side) connecting rod bearing shell |
|---|---|
| OE Part # | 4932375 |
| Size | .010" undersize (0.25 mm) |
| Qty Required | 6 uppers per engine (sold per shell) |
| Lower Shell Pair | Use Cummins 4892795 (.010) for the lower half |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2003–2007 | Ram 5.9L ISB (24V Common-Rail) | Ram 2500/3500 |
| 2007.5–2018 | Ram 6.7L ISB (24V Common-Rail) | Ram 2500/3500 |
Compatibility Notes: Fits fracture-split (cracked-cap) connecting rods used on 2003+ ISB platforms. Earlier 1989–2002 5.9L engines use different rod/bearing styles—verify by VIN/ESN and rod type before ordering.
Often Paired With
- Lower rod bearing shells (.010): Cummins 4892795 (order 6)
- Assembly lube & plastigage to verify oil clearance
- Rod bolts (replace if stretched; torque/angle per spec)
What’s In The Box
- (1) Genuine Cummins Upper Connecting Rod Bearing Shell (.010) — 4932375
- Matching lower shell sold separately (see “Often Paired With”).
Install Tips
- Confirm crank journal size and .010" undersize requirement before purchase.
- Cleanliness is critical; lube bearing face and torque rod bolts to factory spec.
- Verify oil clearance with plastigage; rotate assembly by hand before startup.
FAQ
HOW MANY OF THESE BEARINGS DO I NEED?Six upper shells per engine—one for each connecting rod. Order the matching lower shells (Cummins 4892795) to complete the set.
WHAT ENGINES/YEARS DOES 4932375 FIT?Designed for fracture-split (cracked-cap) rods typically found on 2003–2018 5.9L/6.7L ISB common-rail engines (verify by VIN/ESN).
IS THIS THE UPPER OR LOWER SHELL?Upper (piston-side) shell. Pair with 4892795 for the lower crank-side shell.
WHAT DOES “.010" UNDERSIZE” MEAN?It matches a crank journal ground .010" (0.25 mm) under standard diameter. Measure before ordering.
WILL THIS FIT 1989–2002 5.9L ENGINES?Those earlier engines use different rods/bearings. This part targets 2003+ cracked-cap rods—confirm your rod style.
