Kooks 1-7/8" Long-Tube Headers + GREEN Catted Conn Kit - 2015-2024 Ford Mustang GT / Dark Horse 5.0L
Kooks 1-7/8" long-tube headers + GREEN Catted connection pipes complete bundle for 2015-2024 Mustang GT / Dark Horse 5.0L Coyote. 304 stainless construction, patented scavenging spike, 3/8" laser-cut flanges, EPA-verified 400-cell GREEN Cats (up to 750 RWHP). Includes gaskets, O2 extension harness, clamps, hardware.
or as low as $289.03/mo with Affirm
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Description
This Kooks bundle pairs the 1-7/8″ x 3″ stainless long-tube headers with the matching GREEN Catted connection pipes and OEM adapters for the 2015-2024 Ford Mustang GT and Dark Horse (5.0L Coyote 4V). Built for street cars chasing real gains without wrecking emissions compliance – Kooks GREEN Cats are EPA-verified 400-cell high-flow catalytic converters engineered for modern muscle up to 750 RWHP.
304 stainless construction, 3/8″ thick laser-cut flanges, mandrel-bent 1-7/8″ primaries into 3″ collectors with Kooks’ patented scavenging spike. Dual bolt-pattern header flange. Bolt-on installation with everything needed in the box.
Product Specifications
| Fitment | 2015-2024 Ford Mustang GT / Dark Horse – 5.0L Coyote V8 4V |
| Header Primaries | 1-7/8″ Mandrel Bent – 304 Stainless Steel |
| Collectors | 3″ with Kooks Patented Scavenging Spike |
| Flanges | 3/8″ Thick Laser-Cut, Dual Bolt Pattern |
| Catalytic Converters | Kooks GREEN Cats – EPA Verified, 400 Cell High Flow |
| Power Rating | Up to 750 RWHP |
| Kit Includes | Headers, GREEN Catted Conn Pipes, OEM Adapters, Gaskets, O2 Sensor Extension Harness, Clamps, Bolt Kit |
Why This Kit
- ▶1-7/8″ primaries – the sweet spot for 5.0L Coyote torque and top-end power
- ▶Kooks’ patented scavenging spike in the collector improves exhaust pulse separation and reduces reversion
- ▶GREEN Cats are EPA-compliant (keep your car smog legal where applicable)
- ▶304 stainless construction – will not rust or corrode
- ▶Dual bolt-pattern flange – bolts to factory or aftermarket cylinder heads
- ▶Complete bolt-on kit – no additional parts needed
Installation Manual
Professional installation recommended. Factory service manual + basic hand tools required. Plan 6-8 hours.
Download Kooks Install Manual (PDF)Warranty (PDF)
Emissions Note
Kooks GREEN Cats are EPA certified 400-cell catalytic converters designed to meet federal emissions standards. California (CARB), Colorado, Maine, Massachusetts, and New York buyers should verify state-specific emissions compliance before purchase.
Kooks GREEN Cat assemblies come with a 25,000-mile warranty when installed per Kooks’ instructions.
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