INDUSTRIAL INJECTION MS-2218P DURAMAX MAIN BEARINGS — 2001–2016 6.6L (LB7/LLY/LBZ/LMM/LML) — P-SERIES STD

Restore factory-smooth crank support with INDUSTRIAL INJECTION’s stock replacement main bearing set for the 6.6L Duramax. This kit uses MAHLE/Clevite P-Series tri-metal bearings in standard (STD) size for reliable oil film and durability in daily-driven and towing applications.

Fitment

• 2001–2004 LB7 6.6L Duramax
• 2004.5–2005 LLY 6.6L Duramax
• 2006–2007.5 LBZ 6.6L Duramax
• 2007.5–2010 LMM 6.6L Duramax
• 2011–2016 LML 6.6L Duramax

What’s Included

• (1) Complete main bearing set — STD / P-Series
• Note: Thrust washers sold separately (see Recommended Parts)

Why P-Series?

• MAHLE/Clevite TM-77 tri-metal construction for stable oil film and long service life
• Full-groove main design to promote lubrication under load
• Direct stock replacement for OEM bearings (STD size)

Recommended Parts (CPP internal links only)

• MAHLE TW-610S Thrust Washer Set — 01–16 Duramax
• Shop All Duramax Main Bearings
• MAHLE MS-2218P — .25 mm Undersize
• MAHLE MS-2218P — .50 mm Undersize

Cross-Reference / Alternatives

• MAHLE MS-2218H — H-Series (STD) — performance-oriented bearing
• MAHLE MS-2218HX — H-Series (STD + .001") — extra oil clearance for high power

Helpful Notes

• Always measure the crank and housing bores; verify oil clearances with plastigage or mic/dial bore gauge.
• If your crankshaft is ground undersize, choose the matching undersize bearings (.25 mm or .50 mm).
• P-Series (STD) is ideal for stock to mild builds; use H/HX when added clearance or performance features are needed.

FAQ

No. Order TW-610S separately and set endplay to spec.

Yes — this is a standard size P-Series main bearing set intended to replace OEM bearings in 2001–2016 6.6L Duramax engines.

Use H-Series for performance builds that need enlarged chamfers/high crush; choose HX for roughly .001" extra oil clearance with standard journal size.