Kooks GM 1500 / SUV 5.3L Header and Y-Pipe Kits

Make your 5.3 V8 an even bigger part of the enjoyment

Upgrade your GM truck or SUV with long tube headers and a Y-pipe chosen together for the 5.3-litre engine. These Kooks kits connect to the 2-3/4" OEM rear interface and offer three real combinations, covering the listed 2014-2018 trucks and 2015-2020 SUVs.

SKUs: 2860H220, 2860H420, 2860H430

Compare the three packages

2860H220 pairs 1-3/4" headers with Performance cats. 2860H420 uses 1-7/8" headers with Performance cats. 2860H430 pairs 1-7/8" headers with GREEN cats. Each kit uses 3" collectors and a matching stainless Y-pipe.

Keep the catalyst suited to your engine

Choose Performance cats for a naturally aspirated setup or GREEN for a forced-induction build. The rear interface is common to these 5.3 kits, so you can keep the factory-style rear exhaust while choosing the front arrangement around the engine you want to build.

Choose your configuration

Tuning for your exhaust upgrade

We recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. Contact us to discuss the right tuning route for your vehicle.

Vehicle fitment

Intended use

2860H220, 2860H420: Competition, off-road and track use only. Not for use on public roads.

Ordering and delivery

Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.