Product Description
MAHLE/Clevite CB-1805P-.25MM(8) is a complete engine set of .25 mm undersize P-Series rod bearings for the 2001–2016 GM 6.6L Duramax (LB7, LLY, LBZ, LMM, LML). P-Series tri-metal bearings feature a hardened steel back, reduced overlay thickness, and high crush to maintain retention and resist overlay fatigue in high-load diesel applications. Use with connecting rods marked “B”.
- Series/Material: P-Series tri-metal with hardened steel back and thin overlay
- Size: .25 mm undersize (≈0.010")
- Quantity: Set of 8 pairs (16 shells) — complete V8 engine set
- Application note: For .25 mm undersize rod journals; verify clearances during assembly
Fitment
- 2001–2016 GM 6.6L Duramax: LB7, LLY, LBZ, LMM, LML
- Common vehicles: Silverado/Sierra 2500HD & 3500/3500HD (2001–2016), Express 2500/3500/4500 (2006–2016), Kodiak/TopKick C4500/C5500 (2003–2007)
Cross Reference / IDs
- MAHLE/Clevite: CB-1805P-.25MM (pair); CB-1805P-.25MM(8) (engine set)
- MPN/SKU examples: CB1805P25MM (XDP MPN), MCICB-1805P-.25MM (XDP SKU), MCICB-1805P-.25mm(8) (CPP SKU)
- GTIN/UPC: 027067379696 (pair); 00027067379702 (engine-set packaging)
- Summit Racing reference: CLE-CB1805P25MM8
FAQ
Will these fit my 2001–2016 6.6L Duramax?
Yes. They cover LB7, LLY, LBZ, LMM, and LML applications.
Is this a complete engine set?
Yes. “(8)” indicates eight bearing pairs (16 shells) — one pair per connecting rod.
Do I need machine work for .25 mm bearings?
.25 mm undersize bearings are used with journals machined undersize; always measure and verify oil clearance per the service manual.
Are these the tri-metal P-Series with high crush?
Yes — hardened steel back, reduced overlay thickness, and high crush for maximum retention.
