Kooks Headers KSH1131H020 Long Tube Headers and Catted X-Pipe for 2005-2010 Ford Mustang GT 4.6L 3V

Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!" 1-5/8in. x 2-1/2in. Stainless Steel Long Tube Headers and 2-1/2in. x 2-1/2in. OEM Catted Stainless Steel X-Pipe. STANDARD RACE CATS NOT FOR USE IN FORCED INDUCTION APPLICATIONS 2005-2010 Ford Mustang GT 4.6L 3V Manual or Automatic Transmission. 1-5/8in. x 2-1/2in. Stainless Steel Long Tube Headers and 2-1/2in. x 2-1/2in. OEM Catted Stainless Steel X-Pipe. STANDARD RACE CATS NOT FOR USE IN FORCED INDUCTION APPLICATIONS 2005-2010 Ford Mustang GT 4.6L 3V Manual or Automatic Transmission. 1-5/8" x 2-1/2" Stainless Steel Long Tube Headers and 2-1/2" x 2-1/2" OEM Catted Stainless Steel X-Pipe. 16GA 304 Stainless Steel Construction 3/8" Thick Laser Cut Flanges1-5/8" Mandrel Bent PrimariesStock Bolt PatternKooks Performance Cats 400 Cell High Flow Catalytic Converters Performance Cats not for use on Forced Induction ApplicationsIncludes All Necessary Hardware for Installation2-1/2" Outlet connects to OEM exhaust

• Manufactured In The USA. Kooks Uses T304 Aircraft Quality Stainless Steel. Kooks Products are Backed by a Limited Lifetime Warranty To the Original Purchaser. Kooks Products Are Dyno And Race Tested and Designed For Maximum Power.
• Kooks Products Are Backed By A Limited Lifetime Warranty To The Original Purchaser
• Kooks Products Are Dyno And Race Tested And Designed For Maximum Power
• Kooks Uses T304 Aircraft Quality Stainless Steel
• Manufactured In The USA

Upgrade the exhaust performance of your 2005-2010 Ford Mustang GT with the Kooks Headers KSH1131H020 long tube header and catted X-pipe system. Designed for 4.6L 3V engines with either manual or automatic transmissions, this system improves exhaust flow while maintaining compatibility with the factory-style exhaust connection. It includes stainless steel long tube headers and an OEM-style catted stainless steel X-pipe engineered for street, performance, and track applications.

Kooks builds the KSH1131H020 system in the USA from T304 aircraft-quality stainless steel. The headers feature mandrel-bent primaries, stock bolt-pattern flanges, and laser-cut mounting surfaces for a precise fit. The included Kooks Performance Cats use 400-cell high-flow catalytic converters to support improved exhaust flow while retaining catalytic converter functionality. Standard race catalytic converters are not intended for forced-induction applications. The system's outlet connects to the OEM exhaust, and all necessary installation hardware is included.

Founded in 1962, Kooks Headers has developed a reputation for dyno-tested and race-proven exhaust components. The KSH1131H020 is backed by a limited lifetime warranty to the original purchaser. This application is EPA compliant but is not CARB approved, so verify local emissions requirements before installation. Confirm vehicle fitment and emissions regulations before ordering.

Product Specifications and Technical Data

• Application: 2005-2010 Ford Mustang GT
• Engine: 4.6L 3V V8
• Transmission Compatibility: Manual or automatic
• Header Material: T304 stainless steel
• Header Design: Long tube with mandrel-bent primaries
• Primary Tube Diameter: 1-5/8 inches
• Collector and X-Pipe Diameter: 2-1/2 inches
• Catalytic Converters: 400-cell high-flow Kooks Performance Cats

What's Included

• Stainless steel long tube headers
• OEM-style catted stainless steel X-pipe
• Installation hardware

Features:

• High-Flow Exhaust Design: Long tube headers and a catted X-pipe are engineered to improve exhaust flow and support increased engine performance.
• T304 Stainless Steel Construction: Aircraft-quality stainless steel provides durability and corrosion resistance for street and performance use.
• Precision-Fit Components: Stock bolt-pattern flanges, mandrel-bent primaries, and laser-cut mounting surfaces support accurate installation.
• OEM Exhaust Compatibility: The 2-1/2-inch X-pipe outlet connects to the factory-style exhaust system, while 400-cell high-flow catalytic converters help retain emissions-system functionality.

Fitments:
2005 Ford Mustang GT
2006 Ford Mustang GT
2007 Ford Mustang GT
2007 Ford Mustang Shelby GT
2008 Ford Mustang Bullitt
2008 Ford Mustang GT
2008 Ford Mustang Shelby GT
2009 Ford Mustang Bullitt
2009 Ford Mustang GT
2010 Ford Mustang GT

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Number Of Boxes: 2
Regular Stock: t
Units Per Sku: 1