MAHLE MS-2328H-.25MM H-SERIES MAIN BEARING SET (.25MM) FOR 89-18 CUMMINS 5.9/6.7

Product Description

Build a stronger bottom end with the MAHLE MS-2328H-.25MM H-Series Main Bearing Set for 1989–2018 Cummins 5.9L/6.7L engines. H-Series bearings use a hardened steel back with a thin overlay, medium eccentricity, and high crush for stable seating in performance blocks—ideal for line-honed mains and cranks with large fillets. Size is .25 mm undersize (0.010"); includes grooved upper/plain lower shells and the upper flanged thrust bearing.

Mahle MS-2328H-.25MM H-Series main bearings, Cummins 5.9 6.7 undersize bearings, 0.25mm (.010") undersize race main bearings, Mahle Clevite H-Series Cummins ISB 6BT, high crush enlarged chamfer bearings, performance main bearing set Ram 2500 3500

Fitment

• 1989–1993 Dodge D/W 250–350 — 5.9L Cummins 12V (VE)
• 1994–1998 Ram 2500/3500 — 5.9L Cummins 12V (P7100)
• 1998.5–2002 Ram 2500/3500 — 5.9L Cummins 24V (VP44)
• 2003–2007 Ram 2500/3500 — 5.9L Cummins 24V Common Rail (CP3)
• 2007.5–2018 Ram 2500/3500 — 6.7L Cummins ISB/CM series

Cross-Reference / Alternatives (Mahle only)

• Mahle MS-2328H H-Series Main Bearing Set (STD): MS-2328H (STD)
• Mahle MS-2328H-.026MM H-Series Main Bearing Set (.026mm): MS-2328H-.026MM
• Mahle MS-2328P-.25MM P-Series Main Bearing Set (.25mm): MS-2328P-.25MM
• Mahle MS-2328P-.50MM P-Series Main Bearing Set (.50mm): MS-2328P-.50MM

What’s Included

• .25 mm undersize (.010") H-Series main bearing shells
• Grooved upper / plain lower configuration
• Upper flanged (thrust) bearing

FAQ

Will .25 mm (.010") undersize fit my crank?
Only if your crank journals are ground .25 mm (.010") under. Always measure or confirm with your machine shop.

Are H-Series bearings good for high-power builds?
Yes. H-Series are engineered for performance use with high crush, medium eccentricity, and enlarged chamfers for fillet clearance.

Does this set include the thrust bearing?
Yes, the upper flanged thrust bearing is included in this kit.

Do I need line-honing?
Main bore alignment and surface condition are critical for bearing life. Check alignment and clearances and follow Cummins specs.

Specifications for Mahle MS-2328H-.25MM