Clevite Tri Armor GMC Pass & Trk 366/396/402/427/454 Main Bearing Set - MS909HC1

Clevite H-Series performance bearings have a medium level of eccentricity, high crush, and a hardened steel back and thin overlay. These bearings are made without flash plating for better seating. Use H-Series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range.