This adapter pipe is used to adapt the Borla systems for the 2019-2020 Silverado and Sierra 1500 pickups with 5.3L engines to the 157" wheel base of the Crew Cab Standard Bed (6.5' bed). Built from premium, high-quality austenitic T-304 stainless steel, to give you the absolute best in performance and durability. Precision computer-controlled CNC manufacturing ensures an accurate fit. Best of all, BORLA stands behind every connection pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.