Clevite MS-1590A-.50MM Engine Crankshaft Main Bearing Set

The Clevite MS-1590A-.50MM is a precision-engineered crankshaft main bearing set designed for oversized crankshaft applications requiring a .50mm undersize bearing. This complete main bearing set provides the essential wear surface between the crankshaft and engine block, ensuring smooth rotation and optimal oil film retention.

Advanced Bi-Metal Construction:

• 100% lead-free aluminum silicon alloy composition for environmental compliance
• Engineered with 60% more silicon content than competitive replacements
• Superior journal surface conditioning for extended service life
• Enhanced seizure resistance under high-load conditions
• Exceptional wear resistance for demanding applications
• Bi-metal design combines strength with optimal bearing properties

Performance Benefits:

• .50mm undersize specification for worn or machined crankshafts
• Precise tolerances ensure proper oil clearance and film thickness
• Reduces friction and heat generation during operation
• Maintains consistent performance across temperature ranges

Clevite bearings continue a legacy of durability and dependability in engine rebuilding applications. The advanced aluminum silicon formulation delivers the reliability professional engine builders and technicians demand for both stock and performance rebuilds.