Product Description
MAHLE CB-1805P-.25MM is a P-Series connecting rod bearing for the 2001–2016 GM 6.6L Duramax. This 0.25 mm undersize (.010") “B-rod” bearing features a hardened steel back, reduced overlay thickness, and high crush for maximum retention—ideal for high-RPM and performance rebuilds. Sold as a pair (two shells) per connecting rod; 8 pairs required per engine.
- Series/Type: P-Series, tri-metal construction
- Size: .25 mm undersize (for machined crank journals)
- Rod Letter: Use with connecting rods stamped “B”
- Packaging: Pair (Qty per pack: 2) • GTIN/UPC: 027067379696 • MPN: CB1805P25MM
Fitment
- 2001–2016 Chevy/GMC 6.6L Duramax: LB7, LLY, LBZ, LMM, LML
- Typical models: Silverado/Sierra 2500HD & 3500/3500HD (and select C/K Kodiak/TopKick & Express/Savana applications)
Cross Reference / Related Sizes
- Family: MAHLE/Clevite CB-1805P (B-rod) — available sizes: STD, .25 mm, .50 mm
- Alternate (A-rod): MAHLE/Clevite CB-1990P (STD / .25 mm / .50 mm)
- GTIN/UPC (this part): 027067379696
FAQ
Will this fit my Duramax?
Yes—fits 2001–2016 6.6L Duramax LB7/LLY/LBZ/LMM/LML. Verify your connecting rod is stamped “B” for this bearing family.
What does .25 mm undersize mean?
It’s for crank journals ground 0.25 mm (.010") under standard. Measure and choose the correct size accordingly.
Is this sold individually or as a set?
Sold as a pair (two shells) for one rod. You’ll need 8 pairs for a V8 Duramax.
What makes P-Series good for performance?
P-Series bearings use a hardened steel back, reduced overlay thickness, and high crush to handle high RPM and rod-bore close-in.
