Clevite MS2328P25MM P-Series Main Bearing Set (-0.25 mm Undersize)

Vehicle Fitment

• Diesel / Gas engines using a crank with 0.25 mm undersize journals
• Commonly used in Cummins 5.9 L / 6.7 L diesel applications (1989-2012) and other high-revving engines
• Also fits Isuzu 1.9 L G200Z (1986-1987) in undersize configuration

Features

• P-Series bearing - designed for high-revving and high-load applications
• Tri-metal construction: steel backing, copper-lead core, and babbitt overlay for strength and wear resistance
• High crush factor for firm seating in the bearing bore
• Full oil groove on most shells for optimal lubrication
• Reduced overlay thickness to limit fatigue in demanding conditions
• Electroplated surface for smooth operation and conformability

Specifications

• Part Number: MS2328P25MM
• Series: Clevite 77 P-Series
• Undersize: -0.25 mm (0.00984 in)
• Material: TM-77 (Tri-metal)
• Groove: Full grooved on most bearings (upper and lower)
• Quantity: Set (5 main bearing shells)

Included Components

• 5x main bearing shells (upper + lower)

Product Description

The **Clevite MS2328P25MM** is a precision-engineered P-Series main bearing set with 0.25 mm (-.010") undersize. Built with a tri-metal design, these bearings offer excellent load capacity and durability - ideal for high-revving or high-stress engines. The full-groove design ensures efficient oil flow under all operating conditions.

With its high crush factor, the MS2328P25MM seats securely in the bearing bore, reducing the risk of bearing slip under load. The babbitt overlay provides a smooth running surface with good embedability, helping the bearing survive debris and maintain oil film.

Whether you're rebuilding a diesel crank or machining down a gas engine journal to undersize, this bearing set provides a reliable foundation for strong, long-lasting performance. Its design balances strength, conformity, and lubrication - making it a go-to choice for performance or rebuild applications.