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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.
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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 |
|---|---|
| SKU | 28621100 |
| Applications | Supported 2019+ GM trucks / 2021+ SUVs, 5.3L / 6.2L |
| Material | 304 stainless steel |
| Header tubing | 1-5/8" x 1-3/4" Torque Series |
| Head interface | Oval ports; stock bolt pattern |
| Outlet | Flanged direct OEM-cat connection |
| Contents | Gaskets and bolt kit; no additional connection parts required |
These Kooks Torque Series headers give your later-generation GM truck or SUV a stainless header upgrade using the factory catalytic-converter connection. The gaskets and bolt kit are included, making it a useful route when you want to retain the OEM front exhaust arrangement.
SKU: 28621100
The application begins with the 2019 truck generation and the 2021 SUV generation, covering the 5.3- and 6.2-litre models below. The two starting years are part of the fitment choice.
The 1-5/8" x 1-3/4" tubing uses oval ports and the stock bolt pattern. Flanged outlets connect to the OEM cats, with no additional connection parts required for the specified installation.
We recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. Talk to us to discuss the right tuning route for your vehicle.
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2021-2024 | Cadillac Escalade | 6.2L V8 | 28621100 | |
| 2021-2023 | Chevrolet Suburban | 6.2L V8 | 28621100 | |
| 2021-2023 | Chevrolet Suburban | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 LT | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 LTZ | 6.2L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 Custom Trail Boss | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 LT Trail Boss | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 LTZ | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 High Country | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 WT | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 RST | 5.3L V8 | 28621100 | |
| 2019-2024 | Chevrolet Silverado 1500 High Country | 6.2L V8 | 28621100 | |
| 2019-2022 | Chevrolet Silverado 1500 Custom | 5.3L V8 | 28621100 | |
| 2020-2024 | Chevrolet Silverado 1500 RST | 6.2L V8 | 28621100 | |
| 2020 | Chevrolet Silverado 1500 LT Trail Boss | 6.2L V8 | 28621100 | |
| 2022-2024 | Chevrolet Silverado 1500 ZR2 | 6.2L V8 | 28621100 | |
| 2021-2023 | Chevrolet Tahoe | 5.3L V8 | 28621100 | |
| 2021-2023 | GMC Yukon XL | 6.2L V8 | 28621100 | |
| 2021-2023 | GMC Yukon XL | 5.3L V8 | 28621100 | |
| 2019-2024 | GMC Sierra 1500 SLT | 6.2L V8 | 28621100 | |
| 2019-2024 | GMC Sierra 1500 Denali | 5.3L V8 | 28621100 | |
| 2019-2024 | GMC Sierra 1500 AT4 | 6.2L V8 | 28621100 | |
| 2019-2024 | GMC Sierra 1500 Elevation | 5.3L V8 | 28621100 | |
| 2019-2024 | GMC Sierra 1500 Denali | 6.2L V8 | 28621100 | |
| 2019-2022 | GMC Sierra 1500 SLT | 5.3L V8 | 28621100 | |
| 2019-2022 | GMC Sierra 1500 SLE | 5.3L V8 | 28621100 | |
| 2019-2021 | GMC Sierra 1500 AT4 | 5.3L V8 | 28621100 | |
| 2019-2021 | GMC Sierra 1500 Base | 5.3L V8 | 28621100 | |
| 2022-2024 | GMC Sierra 1500 Pro | 5.3L V8 | 28621100 | |
| 2021-2023 | GMC Yukon | 5.3L V8 | 28621100 | |
| 2021-2023 | GMC Yukon | 6.2L V8 | 28621100 |
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
| Specification | Details |
|---|---|
| SKU | 28621100 |
| Applications | Supported 2019+ GM trucks / 2021+ SUVs, 5.3L / 6.2L |
| Material | 304 stainless steel |
| Header tubing | 1-5/8" x 1-3/4" Torque Series |
| Head interface | Oval ports; stock bolt pattern |
| Outlet | Flanged direct OEM-cat connection |
| Contents | Gaskets and bolt kit; no additional connection parts required |
The truck application starts in 2019 and the SUV application in 2021.
These headers connect directly to the OEM cats in the specified installation.
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.