Product Description
MAHLE / Clevite MS-2328H-.25MM H-Series main bearing set for high-performance Cummins 5.9L & 6.7L builds. The H-Series uses a hardened steel back with a thin overlay for durability, medium eccentricity and high crush for stable seating, enlarged chamfers for fillet clearance, and no flash plating for superior fit in performance blocks and line-honed mains.
- Size: .25 mm undersize (0.010")
- Configuration: Grooved upper & plain lower shells; includes upper flanged (thrust) bearing
- Intended use: Medium to high RPM / performance applications
- Country of origin: USA (per supplier data)
Fitment
- 1989–1993 Dodge D/W 250–350, 5.9L 12-valve VE
- 1994–1998 Ram 2500/3500, 5.9L 12-valve P7100
- 1998.5–2002 Ram 2500/3500, 5.9L 24-valve VP44
- 2003–2007 Ram 2500/3500, 5.9L 24-valve Common Rail (CP3)
- 2007.5–2018 Ram 2500/3500, 6.7L ISB/CM series Common Rail
Cross Reference / IDs
- Supersedes: MS-1717H
- Alt. refs: PAD6214, MB3110HU, MB3109HL, MB3109HAU, MB-3110H, CTNC014R
- MPN: MS2328H25MM (Clevite)
- GTIN/UPC: 00027067912343
Features
- H-Series performance construction with hardened steel back & thin overlay
- Medium eccentricity, high crush for stability
- Enlarged chamfers for fillet clearance
- No flash plating for better seating
FAQ
Will .25 mm undersize fit my crank?
Only if your crankshaft is ground .25 mm (0.010") undersize. Measure journals or check your machine shop spec before ordering.
Are these good for high RPM or towing?
Yes—H-Series is designed for medium-to-high RPM and performance use and is commonly used in competition and heavy-duty builds when clearances are set correctly.
Do these include the thrust bearings?
Yes, set includes the upper flanged (thrust) bearing for the Cummins ISB/6BT.
Do I need line-honing?
Not always, but main bore alignment and surface condition are critical. Verify clearances with Plastigage or micrometers and follow Cummins specifications.
