AR12250 Main Bearing ( Standard ) Set

Our AR12250 standard main bearing set, with interchangeable part number 3014054, is precision-engineered for Cummins K38, KTA38, and QSK38 industrial engines. Machined from premium lead-free copper alloy with strict dimensional tolerances, it offers superior load-bearing capacity, excellent wear resistance, and optimal crankshaft clearance. This set ensures stable crankshaft operation, reduces friction and heat buildup, and extends the service life of your heavy-duty engine in construction, agriculture, and power generation applications.