You are bidding on a NOS Fel-Pro BS 40013 Rear Main Seal Set. Fits Chevrolet 4 cylinder 151, 153 Engine 1968-79; 6 cylinder 194, 230, 250, 262, 292 Engine 1967-86; V6 200, 229, 262 Engine 1978-85; V8 262, 267, 283, 302, 305, 307, 327, 350, 400 Engine 1959-86. Free shipping! Thanks for bidding!