ACL main bearing set for Nissan QR25 engines, oversized by 0.50mm, provides replacement bearings matched to machined crank journals. These oversize bearings restore proper clearance after crank grinding and are manufactured to OEM tolerances to support reliability during rebuilds. Choose the 0.50mm set when head or crank work leaves undersized journals that require correction.

ACL Nissan QR25 0.50mm Oversized Main Bearing Set