Product Description
Race-ready durability for your 6.6L Duramax bottom end. INDUSTRIAL INJECTION PDM-MS-2218HC is a coated, H-Series main bearing set engineered for high load, high RPM builds. Based on proven Clevite/MAHLE H-Series geometry with medium eccentricity, high crush, and enlarged chamfers for crank fillet clearance, then finished with a performance coating to help protect during cold starts and transient oil-film events.
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
- Complete set of H-Series coated main bearing shells for one engine (upper & lower)
- Standard size (STD) for standard journal crankshafts
Key Features
- H-Series performance design: medium eccentricity, high crush, enlarged chamfers
- Performance coating for added scuff resistance and protection during oil-starvation events
- Competition-ready seating characteristics; no flash plating for better conformity
- Direct replacement for 2001–2016 6.6L Duramax platforms
Recommended Parts (CPP internal links)
- MAHLE TW-610S Thrust Washer Set (required if servicing thrust)
- ARP 230-5401 Main Stud Kit (LB7/LLY 2001–2005)
- ARP 230-5402 Main Stud Kit (LBZ/LMM 2006–2010)
- Duramax Rod Bearings (H/P/HX options)
- Shop All Duramax Main Bearings & Bottom-End Hardware
Cross-Reference / Alternatives
Helpful Notes
- Verify main housing bore, journal size, and bearing clearances during assembly. HX (+.001") sets are often used when extra oil clearance is needed.
- Use the correct thrust washer set (TW-610S) when servicing thrust.
- Pair with quality main studs and proper line-hone for best cap alignment and bearing life.
FAQ
What’s the difference between H, HX, and this coated HC set?H-Series is the baseline performance geometry. HX adds about +.001" oil clearance. HC denotes a performance coating applied to the H-Series shells for added scuff protection.
Do these include thrust washers?No. Order MAHLE TW-610S separately if you are servicing the thrust bearing.
Will these fit all 2001–2016 Duramax engines?Yes—LB7, LLY, LBZ, LMM, and LML platforms. Always measure and confirm clearances for your specific crank and block.
When should I choose HX (+.001") instead?Use HX when your target oil clearance is on the tight side due to crank specs, housing bore, coating thickness, or intended use.
