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 the front cats on your Stingray
Keep your existing rear exhaust and upgrade the front catalytic connections with Kooks Ultra-GREEN pipework. This set fits the 2020-2023 C8 Stingray, connecting to the factory manifolds or matching Kooks headers and joining the OEM cat-back. Gaskets and the bolt kit are included.
SKU: 21803300
A direct factory-interface upgrade
The flanged inlet and outlet use the stock bolt pattern. The Ultra-GREEN catalysts have 304 stainless steel outer bodies and a 4-1/2-inch-diameter, 400-cell metallic substrate. The connections replace the original catalytic converters while retaining the front and rear factory interfaces.
For your 2020-2023 Stingray
A tune is not required for this specified 2020-2023 Stingray installation. It gives the earlier car an Ultra-GREEN front-cat upgrade while keeping its factory-style exhaust connections.
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.
Matching products
If you also want to replace the manifolds, the Stingray Super Street headers match the factory-cat interface for your 2020-2023 Stingray.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2020-2023 | Chevrolet Corvette Stingray | 6.2L V8 | 21803300 |
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 | 21803300 |
| Application | 2020-2023 C8 Stingray, 6.2L LT2 |
| Pipework | 3" stainless steel |
| Catalyst construction | 304 stainless outer body; 400-cell metallic substrate |
| Substrate diameter | 4-1/2 inches |
| Front interface | OEM manifolds or matching Kooks headers |
| Rear interface | OEM cat-back; flanged stock bolt pattern |
| Included | Gaskets and bolt kit |
| Tune requirement | No tune required for the specified 2020-2023 Stingray installation |
Frequently asked questions
Do I need Kooks headers?
No. These connections also fit the factory manifolds.
Will this fit a Z06?
Choose the Z06-specific 218133BK connections for that application.
Is a tune required?
Not for this specified 2020-2023 Stingray installation. If you are changing other engine hardware at the same time, discuss the completed setup with us.
