This Spectre single-inlet air intake plenum is cast polished aluminum with a 4-inch outside diameter inlet and is sized to fit carburetors and TBI throttle bodies with a 5-1/8-inch neck. It measures approximately 9 inches from the air cleaner stud to the inlet and stands about 3.5 inches tall, making it compatible with Spectre 4-inch tubing, filters and accessories for aftermarket intake builds requiring a single 4-inch connection.
Spectre Plenum 4in. OD x 9in. (Air Cleaner to Stud Inlet) - Single