ACL 4M2737HX-STD Main Bearing Set For Nissan - High Performance Standard Size

Engine builders working on Nissan projects, this ACL main bearing set delivers the performance and reliability you need for serious builds.

The 4M2737HX-STD designation means these are standard size HX series bearings that provide .001 inch extra clearance compared to standard bearings - perfect for high-performance applications where additional oil clearance is beneficial.

ACL uses their tri-metal construction with a hardened steel backing that stands up to high RPM conditions, heavy load stresses, and elevated temperatures without losing crush or integrity.

The design features include large chamfers to accommodate bigger crankshaft fillets, optimized oil grooves for proper lubrication to rods, increased crush for better seating, and improved overlay materials for enhanced fatigue strength.

These aren't your average replacement bearings - they're engineered for race and performance applications where reliability under stress matters most.

Whether you're building a street performance engine or a full race motor, these bearings provide that extra margin of safety and performance that can make the difference between a engine that lasts and one that fails under pressure.

The HX series is specifically designed for applications where additional clearance is desired for improved oil flow and reduced friction.

Trusted by engine builders worldwide for demanding applications.