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Hear more of your Mustang with the factory exhaust retained
Replace the factory resonator with a Kooks H-pipe while retaining the factory headers and OEM rear exhaust. 11513500 is the purpose-made OEM resonator-delete choice for the listed 2015-2026 GT / Dark Horse 5.0 applications.
SKU: 11513500
Fits the factory-header exhaust
The 2-1/4-inch x 3-inch H-pipe uses mandrel-bent 304 stainless tubing. Mid-pipe adapters and all clamps are supplied, giving your installer the connecting parts for the stated OEM exhaust arrangement.
Keep the rear mufflers you already have
The factory rear exhaust stays in the system, while the resonator is replaced. Your retained mufflers and other fitted exhaust parts determine the overall sound, so this is a targeted middle-section change.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2015-2026 | Ford Mustang GT | 5.0L V8 | 11513500 | GT / Dark Horse 5.0L; factory headers and OEM rear exhaust; replaces resonator |
| 2015-2026 | Ford Mustang GT Premium | 5.0L V8 | 11513500 | GT / Dark Horse 5.0L; factory headers and OEM rear exhaust; replaces resonator |
| 2019-2020 | Ford Mustang Bullitt | 5.0L V8 | 11513500 | GT / Dark Horse 5.0L; factory headers and OEM rear exhaust; replaces resonator |
| 2021-2023 | Ford Mustang Mach 1 | 5.0L V8 | 11513500 | GT / Dark Horse 5.0L; factory headers and OEM rear exhaust; replaces resonator |
| 2024-2026 | Ford Mustang Dark Horse | 5.0L V8 | 11513500 | GT / Dark Horse 5.0L; factory headers and OEM rear exhaust; replaces resonator |
| 2024-2025 | Ford Mustang Dark Horse Premium | 5.0L V8 | 11513500 | GT / Dark Horse 5.0L; factory headers and OEM rear exhaust; replaces resonator |
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 | 11513500 |
| Application | 2015-2026 Mustang GT / Dark Horse 5.0L |
| Crossover diameters | 2-1/4-inch x 3-inch H-pipe |
| Construction | Mandrel-bent tubing |
| Included | Mid-pipe adapters and all clamps |
| Front connection | Factory headers |
| Rear connection | OEM rear exhaust |
| Replaces | Factory resonator |
| Material | 304 stainless steel |
Frequently asked questions
Is this for a Kooks long tube header installation?
11513500 is for the factory-header exhaust. The Competition H-pipe and ULTRA X-pipe serve the matching Kooks-header-and-connection installation.
Do I need separate mid-pipe adapters?
The adapters and all clamps are included with this OEM resonator-delete H-pipe.
