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Manufacturer information. Check the part number and installation requirements for your vehicle.
Supplier details checked 2026-09-23 · Test catalog
3in. SS GREEN Catted Y-Pipe for LS Swap. 2007-2018 Jeep Wrangler JK 4-Door.
3in. Stainless Steel GREEN Catted Y-Pipe Must be used with Kooks Headers.
3" SS GREEN Catted Y-Pipe for LS Swap. 2007-2018 Jeep Wrangler JK 4-Door.
3" Stainless Steel GREEN Catted Y-Pipe Must be used with Kooks Headers.
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 Headers And Exhaust Make The Most Power In The Industry
Kooks System Are Specifically Designed For Maximum Power
Kooks Products Are Made Of T304 Air Craft Quality Steel
Limited Lifetime Warranty To Original Purchaser
3 Generations Being Family Owned And Operated
Every Kooks Product Is Dyno And Race Tested
Kooks Products Fit And Install The Best
100 Percent Manufactured In The USA
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
2007-2018 Jeep Wrangler JK 4-Door w/LS Engine Swap. 3in. Stainless Steel GREEN Catted Y-Pipe. 304 Stainless Steel Construction. 3in. Mandrel Bent 16 ga Tubing. Kooks GREENCats 300 Cell High Flow Catalytic Converters. Torca Swivel Seal style Connection on Inlet. Must be used with Kooks Headers Part# 37102200 or 37102400. Designed to connect to Kooks Cat-Back Exhaust part# 37104100. Parts designed to be used with LS Engine Swap with RPM Extreme (or similar) LS Swap Kit. For 2-Door vehicles; relocation of the fuel tank may be required. Minimum 2-1/2in. Suspension Lift recommended. Due to the custom nature of this part; other parts may be required for proper fitment. Please contact Kooks Headers and Exhaust before ordering.
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 Tubing. Kooks GREENCats 300 Cell High Flow Catalytic Converters. Torca Swivel Seal style Connection on Inlet. Must be used with Kooks Headers Part# 37102200 or 37102400. Designed to connect to Kooks Cat-Back Exhaust part# 37104100. Parts designed to be used with LS Engine Swap with RPM Extreme (or similar) LS Swap Kit. For 2-Door vehicles, relocation of the fuel tank may be required. Minimum 2-1/2" Suspension Lift recommended. Due to the custom nature of this part, other parts may be required for proper fitment. Please contact Kooks Headers and Exhaust before ordering.
Kooks 2007+ Jeep Wrangler JK w/LS Engine Swap 3in GREEN Cat SS Y Pipe Kooks HDR Req
3in. x 3in. GREEN Catted Stainless Y-Pip
3" x 3" GREEN Catted Stainless Y-Pipe
3in. x 3in. Y-Pipe
3" x 3" Y-Pipe
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!"
