ACL Race Series Main Bearings 6-Groove Set for Engine #4 Journal

ACL Race Series Main Bearings — 6-Groove Set for Engine #4 Journal Brand: ACL. Purpose-built for high-performance and racing engines, this main bearing set delivers precision, durability, and optimized oiling where it matters most. This kit includes ten main bearing shells: six with oil grooves and four without. The unique configuration places oil grooves on both sides of the #4 journal to maximize lubrication under extreme loads, while the remaining journals receive a grooved bearing on the block side only for controlled oil flow and sealing. Key Features 6 grooved + 4 non-grooved shells: Tailored oiling pattern for balanced lubrication. #4 journal double-sided grooves: Enhanced film strength at a critical load point. Race-grade materials: Engineered for high RPM, high-temp endurance. Precision fit: Consistent shell dimensions for reliable clearance and long life. Direct replacement: Fits where OEM-style shell layout requires #4 double-groove configuration. Why Choose ACL Race Series ACL is trusted by engine builders and racers for delivering components that maintain oil pressure and reduce wear under severe conditions. This specialized #4 journal set is ideal for engines that demand targeted lubrication improvements without changing block or crank hardware. Note: Refer to shell diagrams for correct orientation and placement during installation.