Product Description
Race-bred durability for your 6.6L Duramax bottom end. INDUSTRIAL INJECTION's HX Series coated main bearings (STD + .001" extra oil clearance) are built on Clevite H-Series race shells and coated for added protection during cold starts and high-load abuse. Ideal for performance street builds, towing compounds, and competition engines.
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 coated main bearing set (upper & lower shells) - STD + .001" oil clearance
Key Features
- HX (H-Series, extra clearance) for high oil film stability under load
- Race-proven Clevite H-Series design: medium eccentricity, high crush, enlarged chamfers
- Friction-reducing coating for added scuff/abrasion resistance
- Designed for performance street, towing, and competition use
Recommended Parts (CPP Internal Links)
- MAHLE TW-610S Thrust Washer Set (01-16 Duramax)
- MAHLE/Clevite CB-1805HX Rod Bearings (STD + .001)
- MAHLE SH-1999S Camshaft Bearing Set (01-13)
- MAHLE MS-2218HX Main Bearings (STD + .001) - Non-coated alt.
- Shop All Duramax Main Bearings
Helpful Notes
- Measure everything. Verify housing bore and journal sizes; set main bearing oil clearance and thrust endplay to spec.
- Use TW-610S thrust washers with any MS-2218* bearing set; replace if worn.
- Extra clearance (HX) typically pairs well with higher-viscosity oil and performance oil pumps-confirm for your build.
Cross-Reference / Alternatives (CPP Internal)
FAQ
What does HX (STD + .001") mean?HX is an H-Series bearing with approximately .001" additional oil clearance versus standard H-Series. It helps maintain a stable oil film at elevated power, load, and temperature.
Do I need to replace the thrust washers?Yes-whenever the crank is out, install a new TW-610S set and verify endplay.
Are these coated?Yes. Industrial Injection supplies these as coated HX series bearings for added scuff resistance and margin during startup.
Will these fit all 2001-2016 6.6L Duramax platforms?Yes-LB7, LLY, LBZ, LMM, and LML. Always measure and confirm clearances for your specific crank/block.
| Specification | Detail |
|---|---|
| Manufacturer | Industrial Injection |
| Part Number | PDM-MS-2218HXC |
| Fitment | 2001–2016 GM 6.6L Duramax (LB7/LLY/LBZ/LMM/LML) |
| Series / Type | HX Series, Coated (STD + .001" oil clearance) |
| UPC | 840256915822 |
| GTIN | GTIN-12 (UPC-A): 840256915822 |
| Prop 65 | WARNING: Cancer & Reproductive Harm — P65Warnings.ca.gov |
