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!"

• 100 Percent Manufactured In The USA
• 3 Generations Being Family Owned And Operated
• Every Kooks Product Is Dyno And Race Tested
• Kooks Headers And Exhaust Make The Most Power In The Industry
• Kooks Products Are Made Of T304 Air Craft Quality Steel
• Kooks Products Fit And Install The Best
• Kooks System Are Specifically Designed For Maximum Power
• Limited Lifetime Warranty To Original Purchaser
• 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.

2007-2018 Jeep Wrangler JK 4-Door w/LS Engine Swap. 3" Stainless Steel GREEN Catted Y-Pipe. 304 Stainless Steel Construction 3" Mandrel Bent 16 ga TubingKooks GREEN Cats 300 Cell High Flow Catalytic Converters Torca Swivel Seal style Connection on InletMust be used with Kooks Headers Part# 37102200 or 37102400 Designed to connect to Kooks Cat-Back Exhaust part# 37104100Parts designed to be used with LS Engine Swap with RPM Extreme (or similar) LS Swap Kit Minimum 2-1/2" Suspension Lift recommended For 2-Door vehicles, relocation of the fuel tank may be requiredDue to the custom nature of this part, other parts may be required for proper fitment Please contact Kooks Headers and Exhaust before ordering