Kooks / Exhaust Pipes

Kooks GM 1500 5.3 Y-Pipes (2014-2018 Truck / 2015-2020 SUV)

Check vehicle fitment
£1,831.41 VAT included. Shipping calculated for your destination.

Available to Order

Not sure which one? Ask us to confirm fitment first →
Delivery, customs and taxes Know the landed cost before you order

Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.

Lead times and urgent orders Check timing before you commit

Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.

High value order, handled personally

We confirm build spec, lead time and delivery arrangements with you before any money moves. Prefer to talk it through first?

Technical specifications
Specification Details
SKUs 28603200, 28603300
Applications Listed GM 1500 5.3L trucks 2014-2018; SUVs 2015-2020
Material 3" 16-gauge 304 stainless steel
Header joint Ball and socket; matching Kooks long tube headers required
Rear outlet 2-3/4" OEM
Choices Performance 300-cell or GREEN 400-cell cats
Clamps / hardware Clamps included; OEM rear hardware reused
Performance condition Naturally aspirated only

Finish your 5.3-litre header conversion with matching pipes

Connect your Kooks long tube headers to the OEM rear exhaust with a Performance or GREEN Y-pipe for the supported 5.3-litre GM applications. The 3" stainless front pipework transitions to the 2-3/4" rear outlet, with clamps supplied and the OEM rear hardware reused.

SKUs: 28603200, 28603300

Choose around your engine modifications

Performance cats use a 300-cell substrate and are for naturally aspirated engines. GREEN uses 400-cell catalysts and supports forced induction. Both are supplied as Y-pipes for matching Kooks long tube headers.

Stainless pipework for your truck or SUV

The 16-gauge 304 stainless pipes use ball-and-socket header joints and 2-3/4" outlets for the OEM rear exhaust. They cover the listed 2014-2018 trucks and 2015-2020 SUVs with the 5.3-litre engine.

Choose your configuration

SKU Configuration Supplied arrangement Fitting / engine conditions
28603200 Model Year: 2014-2018; Engine Size: 5.3L; Cat Type: Performance Cats Performance Cats connection assembly; Clamps included; OEM rear hardware reused Naturally aspirated only
28603300 Model Year: 2014-2018; Engine Size: 5.3L; Cat Type: GREEN Cats GREEN Cats connection assembly; Clamps included; OEM rear hardware reused Use the SKU-specific vehicle rows below

Matching products

The GM 1500 long tube headers provide a matching front component. Pair them with the Y-pipe for the engine, vehicle years and rear outlet shown on this page.

Vehicle fitment

Years Vehicle / trim Engine Applicable SKU Fitting conditions
2015-2020 Chevrolet Suburban LT 5.3L V8 28603200, 28603300
2015-2020 Chevrolet Suburban LS 5.3L V8 28603200, 28603300
2015-2016 Chevrolet Suburban LTZ 5.3L V8 28603200, 28603300
2017-2020 Chevrolet Suburban Premier 5.3L V8 28603200, 28603300
2014-2018 Chevrolet Silverado 1500 LTZ 5.3L V8 28603200, 28603300
2014-2018 Chevrolet Silverado 1500 WT 5.3L V8 28603200, 28603300
2014-2018 Chevrolet Silverado 1500 LT 5.3L V8 28603200, 28603300
2014-2018 Chevrolet Silverado 1500 High Country 5.3L V8 28603200, 28603300
2015-2018 Chevrolet Silverado 1500 LS 5.3L V8 28603200, 28603300
2016-2018 Chevrolet Silverado 1500 Custom 5.3L V8 28603200, 28603300
2015-2020 Chevrolet Tahoe LT 5.3L V8 28603200, 28603300
2015-2020 Chevrolet Tahoe LS 5.3L V8 28603200, 28603300
2015-2016 Chevrolet Tahoe LTZ 5.3L V8 28603200, 28603300
2016-2017 Chevrolet Tahoe Z71 5.3L V8 28603200, 28603300
2017-2020 Chevrolet Tahoe Premier 5.3L V8 28603200, 28603300
2018 Chevrolet Tahoe Midnight Edition 5.3L V8 28603200, 28603300
2015-2020 GMC Yukon XL SLT 5.3L V8 28603200, 28603300
2015-2020 GMC Yukon XL SLE 5.3L V8 28603200, 28603300
2014-2018 GMC Sierra 1500 Denali 5.3L V8 28603200, 28603300
2014-2018 GMC Sierra 1500 Base 5.3L V8 28603200, 28603300
2014-2018 GMC Sierra 1500 SLT 5.3L V8 28603200, 28603300
2014-2018 GMC Sierra 1500 SLE 5.3L V8 28603200, 28603300
2015-2020 GMC Yukon SLT 5.3L V8 28603200, 28603300
2015-2020 GMC Yukon SLE 5.3L V8 28603200, 28603300

Intended use

28603200: 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.

Technical specifications

Specification Details
SKUs 28603200, 28603300
Applications Listed GM 1500 5.3L trucks 2014-2018; SUVs 2015-2020
Material 3" 16-gauge 304 stainless steel
Header joint Ball and socket; matching Kooks long tube headers required
Rear outlet 2-3/4" OEM
Choices Performance 300-cell or GREEN 400-cell cats
Clamps / hardware Clamps included; OEM rear hardware reused
Performance condition Naturally aspirated only

Frequently asked questions

Which option suits forced induction?

Choose the GREEN-catted 28603300 from these two options.

Is the rear outlet the same as the 6.2-litre pipe?

These 5.3 pipes use 2-3/4" OEM outlets. The corresponding 6.2 pipes use 3-1/2".

Delivery, customs and taxes

Know the landed cost before you order

Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.

Lead times and urgent orders

Check timing before you commit

Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.

Fitment first

Check fit before you order

Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.

Check vehicle fitment
Need help with this product?

Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.

Kooks GM 1500 5.3 Y-Pipes (2014-2018 Truck / 2015-2020 SUV)
Kooks GM 1500 5.3 Y-Pipes (2014-2018 Truck / 2015-2020 SUV)2014-2018 / 5.3L / Performance Cats
Available to Order £1,831.41