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Finish your HEMI conversion with matching exhaust parts
A HEMI-swapped Wrangler should be a Jeep you look forward to driving, with an exhaust made for its new engine. This 2-1/2" GREEN catted Y-pipe pairs with the Kooks JK Gen 3 HEMI-swap headers, giving you a matching front connection for the conversion.
SKU: 37203300
Made for the installed HEMI
The Y-pipe is for a Gen 3 HEMI conversion in the JK, rather than its original engine. Its 2-1/2" pipework and GREEN cats are part of that specific swap arrangement.
Fit it around your conversion
An engine swap changes the space available for the exhaust. Your mounts, drivetrain and conversion hardware need to be considered together, and additional parts can be required for fitting. We can help you plan the matching Kooks components for your JK.
304 stainless steel construction
The 304 stainless steel construction gives your exhaust upgrade a durable foundation.
Matching products
The JK HEMI-swap headers use 2-1/2-inch outlets for this Y-pipe. Both parts are for a Gen 3 HEMI-swapped JK and need your conversion hardware to suit.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2018 | Jeep Wrangler JK | Gen 3 HEMI conversion | 37203300 | Gen 3 HEMI engine swap; matching swap headers |
| 2007-2017 | Jeep Wrangler | Gen 3 HEMI conversion | 37203300 | Gen 3 HEMI engine swap; matching swap headers |
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 | 37203300 |
| Application | Jeep Wrangler JK with Gen 3 HEMI engine swap; supported model years below |
| Pipe diameter | 2-1/2" |
| Catalysts | GREEN |
| Construction | 304 stainless steel |
| Required front component | Kooks JK Gen 3 HEMI-swap headers |
| Installation | Custom conversion; additional fitting parts may be required |
Frequently asked questions
Will it fit my original Wrangler engine?
It is made for a Gen 3 HEMI engine swap and the matching Kooks HEMI-swap headers.
Is this a universal HEMI Y-pipe?
It is a JK conversion part. Match it to your particular swap hardware and chassis layout.
