MAHLE CB1990P CONNECTING ROD BEARING (STD) FOR 01-16 GM DURAMAX

Product Description

Lock in reliable oil film and long service life on your 2001–2016 6.6L Duramax with the MAHLE CB1990P standard-size connecting rod bearing. Built on a hardened steel back with TM-77 tri-metal overlay, this P-Series “A-rod” shell delivers high crush, stable eccentricity, and consistent performance for stock rebuilds, heavy tow rigs, and work trucks.

Mahle CB1990P Duramax rod bearing, Clevite P-Series standard A shell, 6.6L LB7 LLY LBZ LMM LML bearings, TM-77 tri-metal overlay, high crush oil film stability, CPP Diesel Mahle bearings

Fitment

• 2001–2016 Chevrolet Silverado/Sierra 2500HD–3500HD – 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)
• 2006–2016 Chevrolet/GMC Express & Savana 2500–3500 – 6.6L Duramax (select models)

Cross-Reference / Related (Mahle on CPP Diesel only)

• MAHLE CB-1990P (STD) – this item
• MAHLE CB-1990P-.25MM (A-rod, .25 mm undersize)
• MAHLE CB-1990P-.50MM (A-rod, .50 mm undersize)
• MAHLE CB-1805P (B-rod companion, STD)
• MAHLE CB-1805P-.25MM (B-rod, .25 mm undersize)
• MAHLE MS-2218P (Main bearings, STD)
• MAHLE MS-2218P-.25MM (Main bearings, .25 mm undersize)
• MAHLE MS-2218P-.50MM (Main bearings, .50 mm undersize)

Notes

Duramax rods are marked “A” and “B.” CB1990P is the “A-rod” shell; pair with CB-1805P for the “B-rod” shell. Sold per bearing position; order the correct quantity for all eight rods.

FAQ

Will CB1990P fit all 2001–2016 Duramax engines?

Yes—LB7/LLY/LBZ/LMM/LML 6.6L applications use this standard “A-rod” shell when the crank and rod bore are standard size and within spec.

How do I know if I need the “A” or “B” shell?

Check the stamp on each connecting rod. Use CB-1990P for rods marked “A” and CB-1805P for rods marked “B.”

Is machine work required?

Not for standard size if parts are in spec. Undersize options (-.25 mm/-.50 mm) require a properly ground and finished crank.

Specifications for Mahle CB1990P