Kooks GM 1500 4.8 / 5.3 Header Kit, 1-3/4-inch (2009-2013) | 2855H220

Choose a complete front exhaust upgrade for your GM V8

Pair 1-3/4" Kooks long tube headers with a Performance-catted Y-pipe for your supported 2009-2013 GM truck or SUV. The stainless kit joins the 2-3/4" OEM rear interface, letting a compatible rear exhaust remain in place.

SKU: 2855H220

The smaller-primary package

The 1-3/4" primaries lead into 3" collectors and the supplied 3" Y-pipe. This kit gives you that primary choice alongside the separate 1-7/8" package, so you can select around your engine and intended modifications.

Headers and connections in one purchase

The front Y-pipe is part of the kit, with Performance cats specified for naturally aspirated engines. Its 2-3/4" rear outlet matches the factory-style interface for the supported applications.

Fitting your exhaust

Some installations with 90-degree spark-plug boots need the wires modified as shown in the fitting guide, or replaced with suitable aftermarket wires.

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

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.