Kooks Headers 14003400 Stainless Steel H.O. Green Catted OEM Connection Pipes - 3in.

The Kooks Headers 14003400 are 3-inch High Output (H.O.) GREEN catted OEM connection pipes designed to bridge Kooks long tube headers to the factory mid-pipe on the 2020–2022 Ford F-250 and F-350 Super Duty equipped with the 7.3L Godzilla V8 engine. These high-flow connecting pipes are the critical link in a complete Kooks header exhaust upgrade, delivering improved exhaust scavenging and a more aggressive exhaust tone while maintaining OEM exhaust connections.

Key Features:

• Constructed from T304 aircraft-quality stainless steel for superior corrosion resistance and long-term durability
• Features Kooks H.O. (High Output) GREEN 300-cell high-flow catalytic converters for improved flow over standard cats
• Ball and socket style connection to Kooks long tube headers for a leak-free, secure fit
• Connects directly to the OEM factory exhaust — no additional adapters or parts required
• Includes all hardware (bolts and clamps) required for installation
• Mandrel-bent tubing and precision TIG welds for consistent flow and zero exhaust leaks
• Handcrafted and manufactured in the USA
• Dyno and race tested and designed for maximum power output
• Backed by a limited lifetime warranty to the original purchaser on stainless construction

The 14003400 H.O. GREEN catted connection pipes are engineered specifically for use with Kooks long tube headers and require Kooks long tube headers for proper installation. With over 60 years of racing heritage — including championships in the NHRA, IHRA, NMCA, NMRA, and NASCAR — Kooks products are trusted by performance enthusiasts and professional builders alike. All Kooks products are independently owned, family-operated, and proudly made in the United States.

Note: This product is intended for 49-state use. California residents should review applicable CARB regulations prior to purchase.