Thread 1/2-20 Hex 9/16 Oil Drain Plugs Qty (15)

Length Under Head 13/16, 3921988, Plain, Buick 4, 6 & 8 Cyl. All [Exc.2.5 (151)] 3.0, 4.3, 4.9 (301 Eng.) 59-On, Cadillac 6 & 8 Cyl. All (Exc. 4.1 Eng.) 66-On, Chevrolet (Includes GMC Light Truck) 4, 6 & 8 Cyl. All [exc.1.8 (diesel); 2/5 (151), 4.3 (diesel) Eng.] 28-On, Oldsmobile 4, 6 & 8 Cyl. All [Exc.1.8 (diesel), 2.5 (151), 3.0, 4.3, (diesel), 4.3S, 4.9T (301)] 61-On, Pontiac 4, 6 & 8 Cyl. All [Exc. 1.8 (diesel), 2.5 (151), 4.3 (diesel), 4.3S, 4.9T (301)] 60-On - Auveco