ACL main bearing set 0.10 oversize for 1961–1978 Austin and MG 970–1098cc engines, intended for crankshaft undersize finishing. The 0.10 oversize shells restore bearing clearance after crank machining and provide proper crank support in rebuilt short-blocks. Suitable for classic British car engine restorations where corrected journal dimensions are required for reliable lubrication and smooth crank rotation.

ACL 61-78 Austin / MG 4 970-1098cc Main Bearing Set - 0.10 Oversized