Kooks High Flow Y-pipe with Cats - 2003+ GM Truck and SUV (5.3L and 6.0L Engine)

This high flow y-pipe from Kooks is designed to connect their long tube headers to your factory or aftermarket catback. It feature all 304 stainless construction, a 3" inlet, and Kooks high flow cats. Designed for 2003+ GM trucks (Silverado, Sierra, Tahoe, Yukon, Escalade, Avalanche) with 5.3L or 6.0L engine only. Does not work with stock manifolds, or other manufactures headers.