Description

Industrial Injection H and HX Clevite main bearings for 2001-2016 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 6.6L Duramax (LB7, LLY, LBZ, LMM, LML). Developed primarily for NASCAR-style racing applications, suitable for any competition Duramax build. Sold as a complete set.

H-series have a medium level of eccentricity, high crush, hardened steel back, thin overlay, and enlarged chamfers for crankshaft fillet clearance. They are made without flash plating for better seating. HX-series add .001" extra clearance. Both variants carry the coated dry-film lubricant that helps protect bearings during cold starts and oil-starvation events.

Features

• Clevite H/HX Series Main Bearings — Complete Set
• H Series — Standard Clearance (PDM-MS-2218HC)
• HX Series — .001" Extra Clearance (PDM-MS-2218HXC)
• Dry-Film Lubricant Coating
• Hardened Steel Back, Thin Overlay
• Enlarged Chamfers for Fillet Clearance
• Made Without Flash Plating