ACL Bearings 6B1443P-20 Connecting Rod Bearing Set Oversize Buick - 020 V6

The ACL Bearings 6B1443P-20 is a high-performance connecting rod bearing set engineered specifically for Buick V6 204ci and 231ci (3.8L) engines. This precision-machined bearing set features a .020" (0.002") oversize outer diameter design for crankshafts that have been machined or rebuilt to non-standard specifications.

Advanced Tri-Metal Construction:

• High-strength steel backing for maximum support and improved bearing retention
• Sintered copper-lead-tin intermediate layer for superior load-carrying capacity
• Lead-tin-copper overlay providing excellent anti-seizure and conformability properties
• Reduced overlay thickness for improved fatigue resistance under high-stress conditions

Performance Features:

• Hardened steel backs on all rod bearings improve lining support and housing retention
• Increased eccentricity compensates for bore distortion at high RPM
• Tight, consistent wall tolerances help maintain proper bearing clearances
• Designed for both street performance and racing applications
• Compatible with Buick 231 V6 engines from 1975-2004

ACL Race Series bearings are trusted by engine builders and racers worldwide, delivering proven durability in everything from street-driven vehicles to championship-winning race engines. Whether you're rebuilding a stock engine or building a high-performance setup, these bearings provide the reliability and precision needed for long-lasting performance.