Clevite MS2328P P-Series Tri-Metal Main Bearing Set for Cummins 5.9L 6.7L Diesel

Vehicle Fitment

• 1989-1993 Dodge Ram W250 / W350 (5.9L 6BT 12-Valve Cummins Turbo Diesel I6)
• 1994-1998 Dodge Ram 2500 / 3500 (5.9L 6BT 12-Valve Cummins Turbo Diesel I6)
• 1998.5-2002 Dodge Ram 2500 / 3500 (5.9L ISB 24-Valve Cummins Turbo Diesel I6, VP44)
• 2003-2007 Dodge Ram 2500 / 3500 (5.9L ISB 24-Valve Cummins Turbo Diesel I6, Common Rail)
• 2007.5-2009 Dodge Ram 2500 / 3500 (6.7L ISB Cummins Turbo Diesel I6)
• 2010-2012 Dodge Ram 2500 / 3500 (6.7L ISB Cummins Turbo Diesel I6)
• 2013-2018 Ram 2500 / 3500 (6.7L ISB Cummins Turbo Diesel I6)
• 2013-2018 Ram 4500 / 5500 Cab & Chassis (6.7L ISB Cummins Turbo Diesel I6)

Fitment Notes

• Fits Cummins 5.9L (359 CID) 6BT and ISB inline-6 diesel engines - both 12-valve and 24-valve configurations
• Fits Cummins 6.7L (408 CID) ISB inline-6 diesel engines
• Covers all fuel system types: mechanical P7100 (1994-1998), VP44 rotary (1998.5-2002), and Common Rail CP3 (2003-2018)
• Standard size bearings - for machined crankshafts, select undersize variants (.25mm, .50mm, .75mm)
• OE replacement: Cummins 3802070, 4955853, 3357480
• Does not fit the 5.9L or 6.7L Cummins used in non-Dodge/Ram commercial or industrial applications without verifying engine serial number compatibility

Features

• Tri-Metal TM-77 construction with steel backing, cast copper-lead intermediate layer, and electroplated lead-tin-copper overlay
• Cast copper-lead process increases fatigue strength approximately 20% over sintered (powdered metal) alternatives
• Higher eccentricity design narrows bearing contact patterns and provides increased oiling to rod bearings
• High crush factor ensures secure retention in main bearing saddles under severe diesel operating conditions
• Reduced overlay thickness prevents overlay fatigue (hen tracking) in high-load diesel applications
• Half-groove oil distribution design maximizes oil flow to connecting rod bearings
• Enhanced conformability and embedability for tolerance of minor journal imperfections and contaminants
• Designed for heavy-duty towing, daily driving, performance, and competition diesel engine rebuilds
• Meets or exceeds OE specifications for direct replacement in Cummins diesel engines

Specifications

• Part Number: MS-2328P
• Brand: Clevite 77 (MAHLE)
• Bearing Series: P-Series
• Bearing Material: TM-77 Tri-Metal (Steel/Copper-Lead/Lead-Tin-Copper)
• Bearing Size: Standard
• Main Journal Shaft Diameter: 82.987-83.012 mm (3.2672-3.2682 in.)
• Housing Bore: 3.464-3.465 in.
• Maximum Bearing Length: 1.47 in.
• Maximum Wall Thickness: 0.097 in.
• Vertical Oil Clearance: 0.002-0.005 in.
• Groove Configuration: Half Groove (Upper)
• Thrust Bearing Oversize: Stock
• Engine Compatibility: Cummins 5.9L 6BT/ISB (359 CID) and 6.7L ISB (408 CID) Inline-6 Diesel
• OE Interchange: Cummins 3802070, 4955853, 3357480
• Quantity: Complete Main Bearing Set

Included Components

• 1x Complete Clevite MS-2328P P-Series Main Bearing Set (upper and lower halves for all main positions, including thrust bearing)

Product Description

The Clevite MS2328P is a P-Series tri-metal main bearing set engineered for the Cummins 5.9L and 6.7L inline-6 diesel engines used in Dodge Ram and Ram heavy-duty pickup trucks from 1989 through 2018. Covering every generation of the legendary Cummins-powered Ram - from the original 12-valve 6BT mechanical injection trucks through the 24-valve VP44 and Common Rail ISB engines, and into the 6.7L ISB era - this bearing set provides a complete crankshaft main journal replacement for full engine rebuilds or bearing service. The TM-77 tri-metal construction delivers exceptional fatigue resistance and load-carrying capacity under the demanding thermal and mechanical loads generated by turbocharged diesel engines.

The P-Series design features higher eccentricity specifically engineered to narrow bearing contact patterns and increase oil flow to the connecting rod bearings - a critical consideration in high-torque diesel applications where rod bearing oil starvation can occur. The high crush factor ensures secure retention in the main bearing saddles, while the reduced overlay thickness prevents the surface fatigue commonly known as hen tracking. The half-groove oil distribution design on the upper bearing halves maximizes lubrication flow throughout the engine's rotating assembly, ensuring reliable protection whether the truck is towing heavy loads, performing daily duty, or running in a high-performance diesel competition build.

This standard-size set directly replaces Cummins OE part numbers 3802070, 4955853, and 3357480. Whether you are rebuilding a first-generation 12-valve mechanical Cummins, refreshing a VP44-equipped 24-valve, overhauling a Common Rail 5.9L, or servicing a 6.7L ISB in a late-model Ram, the Clevite MS2328P delivers the precision, durability, and trusted quality that professional diesel engine builders have relied on for decades. For crankshafts that have been machined undersize, corresponding variants are available in .25mm, .50mm, and .75mm increments. For high-performance applications exceeding 500 horsepower, consider upgrading to the H-Series MS2328H or the coated HX variant.