Product Description
MAHLE/CLEVITE CB-1805P-.50MM (SET OF 8) is a P-Series, TM-77 tri-metal connecting rod bearing set for 2001–2016 GM 6.6L Duramax engines. This is a 0.50 mm undersize set (≈0.020") intended for crankshafts ground 0.50 mm under. Features include a hardened steel back, high crush for cap retention, increased eccentricity, and reduced overlay thickness for fatigue resistance—ideal for stock rebuilds and performance use. Sold as a complete set of 8 rod bearings.
- Series/Material: P-Series, TM-77 tri-metal overlay.
- Size: 0.50 mm undersize (≈0.020").
- Construction: Hardened steel back, high crush, increased eccentricity.
- Quantity: 8 bearings (full engine set).
Fitment
- 2001–2010 LB7 / LLY / LBZ / LMM Duramax 6.6L — direct
- 2011–2016 LML Duramax 6.6L — use CB-1805P bearings only on rods stamped “B”; rods stamped “A” use CB-1990P (matching sizes).
Cross Reference & Related
- Clevite/MAHLE: CB-1805P-.50MM (set), alt formatting CB1805P50MM8.
- Alternate LML (rods “A”): CB-1990P (std/.25/.50).
Install Notes
- Verify journal size: crank must be ground 0.50 mm (.020") under.
- Measure oil clearance and maintain proper surface finish; follow GM/Clevite specs.
FAQ
Is this the correct set for my LML?
Yes for rods stamped “B”. If your LML rods are stamped “A”, use CB-1990P in the appropriate size instead.
What does 0.50 mm undersize mean?
It’s for a crankshaft that has been ground 0.50 mm (.020") under standard; these bearings restore proper oil clearance.
Are these tri-metal bearings?
Yes—TM-77 tri-metal with hardened steel back for strength and fatigue resistance.
Is this sold as a complete set?
Yes, this listing is a full set of 8 rod bearings for one engine.
