ACL Bearings 4B1690-.25 Connecting Rod Bearing Set Oversize - 0.25mm

The ACL Bearings 4B1690-.25 is a high-quality connecting rod bearing set designed for Toyota 4-cylinder engines (1452-1587cc) from 1980-1983, including applications in the Toyota Corolla. This bearing set features a 0.25mm (0.010") oversize dimension to accommodate crankshaft journals that have been machined during engine rebuilds, ensuring proper bearing clearance and optimal performance.

Key Features:

• Tri-metal copper-lead construction for superior durability and load-bearing capacity
• 0.25mm oversize design for precision fitment on machined crankshaft journals
• Manufactured to tight tolerances for consistent bearing clearance
• Enhanced material composition with improved heat conduction properties
• Optimized oil groove design for superior lubrication and distribution
• Hardened steel backing for maximum strength and stability

ACL Bearings are engineered for both performance and reliability, offering improvements in material quality, dynamic thickness, and heat dissipation compared to standard bearings. Whether you're performing a stock rebuild or building a performance engine, these connecting rod bearings provide the precision and durability needed for long-lasting engine operation.