Clevite MS-1804H Engine Crankshaft Main Bearing Set

Clevite H-Series Main Bearings for Honda Performance Builds

The Clevite MS-1804H is a high performance engine crankshaft main bearing set built for Honda and Acura applications that see medium to high RPM use. It uses TM-77 bearing material, a standard size fit, and an H-Series tri-metal construction for builders who need controlled clearance and stable bearing seating.

Fits 1986-2005 Acura Integra, 1997-2005 Acura EL, 1998-1999 Acura CL, 1988-2005 Honda Civic, 1993-1997 Honda Civic del Sol, 1988-1991 Honda CRX, 1998-2002 Honda Accord, 1988-1991 Honda Prelude, 1997-2001 Honda Prelude, and 1998-1999 Isuzu Oasis.

• High performance H-Series main bearing set
• TM-77 bearing material for performance engine use
• Standard size for engines built to OE journal dimensions
• Medium eccentricity and high crush for secure bearing retention
• Hardened steel back with thin overlay construction
• No flash plating for improved seating during assembly

Detailed Product Overview

Clevite MS-1804H main bearings are intended for crankshafts with oversize fillets and engines that operate in the medium to high RPM range. The H-Series design focuses on bearing stability under performance conditions, making it a practical choice for Honda Civic, Acura Integra, and related B-series and D-series style builds where consistent oil film control matters. This part cross-references King Engine Bearings MB5568XP and Sealed Power MS-1804H for the same application.

Common Uses

• Replacing worn crankshaft main bearings during a performance rebuild
• Addressing bearing wear from elevated RPM operation
• Restoring proper crankshaft support in standard-size engine blocks
• Supporting engines with oversize fillet crankshaft designs
• Correcting noise or clearance issues found during teardown

Installation Notes and Tips

Verify crankshaft journal size, bearing clearance, and block condition before assembly. This set requires a thrust washer set that is not included; use part number TW-473S. Confirm that the crankshaft fillets, oil passages, and bearing saddles are clean and within specification before final torque procedures.

Quality Assurance

Clevite H-Series bearings are built with a hardened steel back, thin overlay, and no flash plating to promote proper seating during engine assembly. The MS-1804H is a performance-grade main bearing set for builders who need a standard-size solution for Honda and Acura applications.