Kooks Custom Headers BK109 Coyote/Raptor Header Bolt Kit (Fine Thread)

Kooks Custom Headers BK110 LS Engine Stainless Header Bolt Kit

Kooks Custom Headers BK111 HEMI/Modular Stainless Header Bolt Kit

Kooks Custom Headers BK112 Coyote Header Bolt Kit (Coarse Thread)

Kooks Custom Headers BK113 GM GEN V Stainless Header Bolt Kit

Kooks Custom Headers BK114 Kooks Certified Header Stainless Steel Ball and Socket Bolt Kit

Kooks Custom Headers CAS-104110 O2 Extension Kit 2009+Ram 1500-5.7L HEMI 2) 6in. Extension Harness (4-pin)

Kooks Custom Headers CAS-104322 O2 Extension Kit 2015+Hellcat/2018+Trackhawk

Kooks Custom Headers CAS-104326 O2 Extension Kit 2016 CAMARO SS

Kooks Custom Headers CAS-104677-5PIN O2 Extension Harness 2018+Mustang 1) 8 inch Front Extension Harness (5-Pin)

Kooks Custom Headers CAS-105067 O2 Extension Kit Chrysler 5.7/6.1/6.4 HEMI

Kooks Custom Headers CAS-105094-2 O2 Extension Kit Viper 2) 18in. Extension Harness (4-Pin)

Kooks Custom Headers CAS-105110 O2 Extension Kit WK1 Jeep SRT8

Kooks Custom Headers CAS-105360 O2 Extension Kit 2010-2014 Ford Raptor

Kooks Custom Headers CAS-105630 O2 Extension Kit Z06 Corvette 2) Rear Extension Harness (4-Pin)

Kooks Custom Headers CAS-105979 O2 Extension Harness 2015 Mustang 1) 8in. Front Extension Harness (6-pin)

Kooks Custom Headers CAS-109004 O2 Extension Harness GM 1) 12in. Front Extension Harness (4-Pin)

Kooks Custom Headers CAS-109007 O2 Extension Harness 1998-2002 Camaro 1) 24in. Front Extension Harness (4-Pin).

Kooks Custom Headers CAS-109010-18 O2 Extension Harness GM LT1/LS1 1) 18in. Extension Harness (4-pin) Flat Connecto

Kooks Custom Headers CAS-109014 O2 Extension Harness Ford 1) 12in. Extension Harness (4-Pin) Round Connector

Kooks Custom Headers CAS-109015 O2 Extension Harness Ford 1) 24in. Extension Harness (4-Pin) Round Connector

Kooks Custom Headers CAS-109203 O2 Extension Harness Shelby GT500 1) 12in. Extension Harness (6-Pin)

Kooks Custom Headers CAS-109264 O2 Extension Harness 2019 Ram

Kooks Custom Headers CAS-109264-KOOKS O2 Extension Harness 2024 FORD - F150 - (2) 6" Long

Kooks Custom Headers CAS-109677-8 O2 Extension Harness 2018+ Mustang 1) 8 inch Front Extension Harness (5-Pin)

Kooks Custom Headers CAS-115999 O2 Extension Harness Kit for 2022+ Cadillac CT5-V Blackwing

Kooks Custom Headers EX682-Z O2 Extension Kit C6 Corvette

Kooks Custom Headers EX683-Z O2 Extension Kit 2010 Camaro 2) 8" Front Extension Harness (4-Pin)

Kooks Custom Headers EX684-Z O2 Extension Kit 2009 CTS-V

Kooks Custom Headers EX685-Z O2 Extension Kit 2014-2019 C7 Corvette

Kooks Custom Headers GE-3010540 3in. Non-EPA Catalytic Converter 10-1/2in. Long NOT FOR FORCED INDUCTION

Kooks Custom Headers GE-307540 3in. Competition Only Catalytic Converter 7in. Long NOT FOR FORCED INDUCTION

Kooks Custom Headers GE-90140 3in. Kooks GREENCATS Catalytic Converter 7in. Long Certified to EPA Standards

Kooks Custom Headers GE-90141 2-1/2in. Kooks GREENCATS Catalytic Converter 7in. Long Certified to EPA Standard

Kooks Custom Headers GE-90146 3" Kooks ULTRA-GREEN Catalytic Converter 7" Long Certified to EPA Standards

Kooks Custom Headers GE-90147 3" Kooks GREENCATS Catalytic Converter 7" Long Certified to EPA Standards