Kooks Headers 1132H460 1-7/8in. Long Tube Headers and GREEN Catted H-Pipe Connection Kit

The Kooks 1132H460 is a complete header and connection kit pairing 1-7/8-inch long tube headers with a GREEN high-flow catted H-pipe, engineered to unlock significant exhaust flow gains on the 5.4L 4V supercharged platform. This combination replaces the restrictive factory exhaust manifolds and mid-pipe in a single matched kit, delivering improved horsepower, torque, and exhaust note.

The long tube headers are constructed from 16-gauge T304 aircraft-quality stainless steel with 1-7/8" mandrel-bent primary tubes that feed into a 3" collector. Precision-cut 3/8" thick laser-cut flanges ensure a leak-free seal at the cylinder head, while the stock bolt pattern simplifies installation. An integrated EGR fitting and oval port design maintain compatibility with factory hardware.

The GREEN catted H-pipe measures 3" x 2-1/2" and connects the headers to the existing OEM-spec cat-back exhaust, retaining catalytic converters for emissions-compliant street use. This kit is dyno and race tested, designed to maximize power output without sacrificing drivability.

Kit Includes:

• 1-7/8" x 3" T304 stainless steel long tube headers (pair)
• 3" x 2-1/2" GREEN catted H-pipe connection
• EGR fitting
• Oval port design with stock bolt pattern
• 3/8" thick laser-cut header flanges

Construction & Quality:

• 16-gauge T304 aircraft-quality stainless steel
• 1-7/8" mandrel-bent primary tubes
• 3" collectors
• Handcrafted in the USA
• Dyno and race tested for maximum power
• Limited lifetime warranty to original purchaser

Kooks Headers and Exhaust has been a leader in high-performance exhaust manufacturing since 1962, with championships across NHRA, IHRA, NMCA, NMRA, NASCAR, SCCA, and more. All Kooks products are proudly handcrafted in the United States.