Perfect Circle MS1804P Main Bearing Set for Honda Acura L4 Engines

The Perfect Circle MS1804P is a high-performance crankshaft main bearing set designed for Honda and Acura 4-cylinder engines. Part of the renowned Clevite 77 P-Series family, these bearings are engineered specifically for high-revving engines and demanding applications including performance builds, motorsports, and heavy-duty use.

Advanced Tri-Metal Construction:

• Steel backing provides exceptional strength and durability under high loads
• Intermediate copper-lead alloy layer withstands the extreme forces of engine operation
• Electroplated lead-tin-copper babbitt overlay delivers superior slipperiness and conformability
• Extra-thin overlay design prevents overlay fatigue in high-stress applications

Key Features:

• Standard size main bearing set
• Higher eccentricity and crush factor compensates for high-load factors and engine distortion
• 1/2 groove oil distribution pattern with grooves extending around both halves for enhanced oiling
• Compatible with 1986-2005 Honda and Acura L4 engines: 1.6L, 1.7L, 2.0L, 2.1L, and 2.2L

Important Note: Requires separate thrust washer set (TW473S). This bearing set delivers performance characteristics that exceed many original equipment bearings, making it an excellent choice for engine rebuilds where increased durability and reliability are required.