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.
Upgrade your V8 with the front exhaust already matched
Enjoy a substantial front exhaust upgrade without piecing together a header and Y-pipe combination yourself. This Kooks kit combines 1-3/4" long tube headers with an Ultra-GREEN catted Y-pipe and joins the 3-1/2" OEM rear interface. Gaskets and the bolt kit are included for the installation.
SKU: 2863H300
Ultra-GREEN connections included
The supplied Y-pipe is made from 304 stainless steel and uses the Ultra-GREEN catalyst specification. The headers have 1-3/4" primaries and 3" collectors. It is a complete matched front arrangement for the listed 6.2-litre applications, with the rear outlet sized for the OEM connection.
Tuning for your completed engine
A tune is not required for this particular kit as supplied. We still recommend calibration advice around the headers, engine and other modifications, so the finished setup works together.
Tuning for your exhaust upgrade
A tune is not required for the specified installation, but we recommend tuning advice with every header upgrade. Contact us about your headers, other modifications and fuel so we can help you plan the completed setup.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2021-2023 | Cadillac Escalade | 6.2L V8 | 2863H300 | |
| 2021-2023 | Chevrolet Suburban | 6.2L V8 | 2863H300 | |
| 2019-2023 | Chevrolet Silverado 1500 High Country | 6.2L V8 | 2863H300 | |
| 2019-2023 | Chevrolet Silverado 1500 LTZ | 6.2L V8 | 2863H300 | |
| 2020-2023 | Chevrolet Silverado 1500 RST | 6.2L V8 | 2863H300 | |
| 2020 | Chevrolet Silverado 1500 LT Trail Boss | 6.2L V8 | 2863H300 | |
| 2022-2023 | Chevrolet Silverado 1500 ZR2 | 6.2L V8 | 2863H300 | |
| 2021-2023 | GMC Yukon XL | 6.2L V8 | 2863H300 | |
| 2019-2023 | GMC Sierra 1500 SLT | 6.2L V8 | 2863H300 | |
| 2019-2023 | GMC Sierra 1500 AT4 | 6.2L V8 | 2863H300 | |
| 2019-2023 | GMC Sierra 1500 Denali | 6.2L V8 | 2863H300 | |
| 2021-2023 | GMC Yukon | 6.2L V8 | 2863H300 |
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 |
|---|---|
| SKU | 2863H300 |
| Application | Listed 2019-2023 GM 1500 6.2L applications |
| Material | 304 stainless steel |
| Headers | 1-3/4" primaries; 3" collectors |
| Y-pipe | 3" Ultra-GREEN catted pipework |
| Rear outlet | 3-1/2" OEM interface |
| Fitting parts | Gaskets and bolt kit included |
| Tuning | Not required for this supplied kit; we recommend a tune |
Frequently asked questions
Do I have to tune the vehicle to install this kit?
A tune is not required for 2863H300 as supplied. We recommend tuning with a header upgrade and can discuss calibration for your truck.
What is the header size?
1-3/4" primaries with 3" collectors. This is a different configuration from the 1-7/8" GREEN kit.
