Clevite MS1459AL30 AL-Series Main Bearing Set .030 Oversize

The Clevite MS1459AL30 is an AL-Series main bearing set designed for OEM-style engine rebuilds and mild performance applications. This bearing set features a .030 inch oversize dimension, making it suitable for engines with crankshaft journals that have been machined oversize to restore proper clearances during rebuilding.

Key Features:

• AL-Series construction optimized for cast crankshaft applications
• .030 inch oversize for machined crankshaft journals
• Tri-metal bearing design with steel backing for superior strength
• Copper-lead alloy intermediate layer for load support
• Electroplated babbitt overlay for excellent wear resistance
• Precision engineered crush factor for secure bearing retention
• Suitable for stock rebuilds and mild performance engines

Clevite 77 engine bearings have been the industry standard since 1929, providing reliable performance for street and performance applications. The AL-Series is specifically recommended by Clevite for most engines using cast crankshafts, offering the ideal balance of durability and conformability for daily driver and mild performance builds.