Set of 8x. Prevent catastrophic engine failure! Permanently seal oil towers in GM 4.8 Gen 4 blocks or any other non-DOD equipped engine such as LS2 6.0. Prevent unexpected loss of oil pressure in case of O-ring failure in valley cover. This is a MUCH faster and cleaner solution to the common drill and tap method used to safeguard high-revving race engines against sudden oil pressure loss from this area.
QUALITY tapered roller bearing set. Taper from 7.5mm-8.25mm to create an interference fit by hammer/punch/press into DOD AFM towers.