MS590HX Clevite 77 H Series Main Bearings - SB Ford 289 302 - +.001 Extra Clearance

These bearings are made without flash plating for better seating. H-Series bearings are narrowed for greater crankshaft fillet clearance All H-Series bearings are made in Atlantic, Iowa USA High crush for better seating and retention Un-plated hardened steel backing for better dimensional accuracy and bore contact