Main BearingAftermarket main bearing set (AC12207-49004) in STANDARD size, supplied as a replacement for the original equipment manufacturer crankshaft main bearings. Main bearings support the crankshaft inside the engine block and carry every combustion load through the rotating assembly. Standard size is correct for crankshafts that remain at original specification. Bought by forklift engine rebuilders, machine shops, and fleet maintenance operations during full overhauls. Mains are always installed as a complete kit with consistent clearances, since a single tight or loose journal can take out the entire bottom end.Aftermarket replacement part, cross-references original part number AC12207-49004.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC12207-49004, ac12207-49004, AC1220749004, ac1220749004 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.
