Perma-Cool 182 | Sandwich Adapter, M18 x 1.5 thread

Perma-Cool® Sandwich Adapters are installed between the oil filter landing on the engine block and the oil filter to route the oil to a remote oil cooler. They are die cast from aerospace quality aluminum and machine finished on our CNC production line. O-Rings and illustrated instructions included. Fittings and AN adapter fittings sold separately Designed to fit most GM V6s  M18 x 1.5 thread 1" thick, 3/8" NPT ports for use with 1/2" oil lines. 2-1/2" O-ring included Installation Instructions U.S. Patent 4,335,688