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Join the exhaust on your HEMI-powered Jeep
A HEMI conversion needs exhaust parts made for the engine in the Jeep. Kooks 37203100 provides the 2-1/2-inch Y-pipe connection for a Gen III HEMI-converted 2007-2018 Wrangler JK, used with the matching Kooks swap headers.
SKU: 37203100
Made for the engine conversion
The stainless Y-pipe is the uncatted Competition version. Choose it as part of the HEMI-swap exhaust, with your engine mounting and driveline position already established so the installer can align the pipes correctly.
Buy the matching front exhaust
Use the Kooks HEMI-swap headers for this conversion. The engine-conversion condition matters throughout the fitment table: the original Jeep engine specification identifies the vehicle, while the installed HEMI is the engine these pipes serve.
Matching products
The HEMI-swap headers are made for the 2007-2018 JK Gen III HEMI conversion and provide the required front connection for this Y-pipe.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2018 | Jeep Wrangler JK | Installed Gen III HEMI | 37203100 | Gen III HEMI engine conversion; matching Kooks HEMI-swap headers |
| 2007-2017 | Jeep Wrangler | Installed Gen III HEMI | 37203100 | Gen III HEMI engine conversion; matching Kooks HEMI-swap headers |
Intended use
37203100: Competition, off-road and track use only. Not for use on public roads.
The competition-use waiver applies to 37203100.
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 | 37203100 |
| Application | 2007-2018 Jeep Wrangler JK with Gen III HEMI conversion |
| Pipe diameter | 2-1/2-inch |
| Catalysts | Uncatted Competition version |
| Required parts | Matching Kooks HEMI-swap headers |
| Material | 304 stainless steel |
Frequently asked questions
Is this for the standard Jeep engine?
It is for a JK that has been converted to a Gen III HEMI, using the matching Kooks swap headers.
Is this the catted Y-pipe?
37203100 is the uncatted Competition version.
