1-7/8" Header and Catted Connection Kit. 2014-2018 GM 1500 Series Truck 5.3L. light No modifications are required for

No modifications are required for a hassle-free installation

The flange is 1-3/4 inch in diameter and clamps directly on to metal or plastic tubing where venting is needed

the WeatherTech FloorLiner HP is an essential accessory to preserve your vehicle’s interior integrity and cleanliness

5th Choice PN: 2740

Testing: Up to 31% increase in Flow

1-7/8" Header and Catted Connection Kit. 2014-2018 GM 1500 Series Truck 5.3L. light No modifications are required forHeader and Connection Kit. 2014 2018 GM 1500 Series Truck 2015 2020 SUV 5. 3L. Includes 1 7 8" x 3" Stainless Steel Long Tube Headers & 3" x 2 3 4"(OEM) Catted Stainless Steel Y Pipe.