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.
Available to Order
Not sure which one? Ask us to confirm fitment first →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.
Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.
We confirm build spec, lead time and delivery arrangements with you before any money moves. Prefer to talk it through first?
| 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 |
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
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.
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.
| 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 |
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.
| 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 |
28603200: Competition, off-road and track use only. Not for use on public roads.
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
| 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 |
Choose the GREEN-catted 28603300 from these two options.
These 5.3 pipes use 2-3/4" OEM outlets. The corresponding 6.2 pipes use 3-1/2".
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.
Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.
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.
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.