ACL Performance Race H Series Main Bearings 5M1644H-STD VW/Audi - STD Size

ACL race series engine main bearings are designed for high-performance race engines. ACL race bearings' unique design, metallurgy, and engineering have come together to deliver the best high-performance race-bearing your engine can depend on.

ACL race engine bearings feature Trimetal lead, tin, copper, and nickel for superior strength and seizure resistance. ACL race bearings are identified by the suffix H.

Notes:
H: Standard oil clearance
HX: +0.001 in extra oil clearance
HD: Standard Oil Clearance + Dowel hole in the lower half
HXD: +0.001 in extra oil clearance + Dowel hole in the lower half