Clevite H-Series Main Bearing Set - Standard - GM LS-Series RKL-GMR25 NOS was also the first

NOS was also the first automotive performance product to have a consumable food product to use its name and logo - NOS Energy Drink

38 in Rectangular Port

1999-2001 GMC W4500 Forward

Check Valve Kit

2 in Pin 5 x 5 Hubs

Clevite H-Series Main Bearing Set - Standard - GM LS-Series RKL-GMR25 NOS was also the firstClevite 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. Product Description: Main Bearings H Series Standard GM LS Series Clevite engine bearings have an extensive, long standing history with