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KOOKS HEADER and Connection KITS ARE APPLICATION SPECIFIC, AND PAIR OUR LONG TUBE HEADERS WITH A green catted CONNECTION PIPE THAT CONNECTS TO AN OEM CONNECTION POINT. KOOKS HEADER KITS INCLUDE ALL GASKETS AND HARDWARE REQUIRED FOR INSTALLATION.
Header Kits - Headers and Connection Kit

1-7/8" Headers & GREEN Catted OEM Connection Pipes. 2006-2010 Jeep SRT8 6.1L

1-5/8" Header and GREEN Catted X-Pipe Kit. 1999-2004 Mustang GT 4.6L 2V (w/EGR)

1-5/8" Header and GREEN Catted X-Pipe Kit. 99-04 Mustang Cobra 4.6L 4V (w/EGR)

1-7/8" Stainless Headers & H.O. GREEN Cat. Conn. Kit. 2015-2024 Mustang GT/D.H.

2" Stainless Headers & GREEN Catted Conn. Kit. 2015-2024 Mustang GT/D.H. 5.0L.

2" Stainless Headers & H.O. GREEN Cat. Conn. Kit. 2015-2024 Mustang GT/D.H.

2" Header and H.O. GREEN Connection Kit. 2020+ Corvette C8 6.2L

1 7/8" Header & GREEN Catted Connection Kit. 2020-2022 F250/F350 Super Duty 7.3L

2" Header & GREEN Catted Connection Kit. 2020-2022 F250/F350 Super Duty 7.3L

1 7/8" Header & H.O. GREEN Cat Connection Kit. 2020-22 F250/F350 Super Duty 7.3L

2" Header & H.O. GREEN Cat Connection Kit. 2020-22 F250/F350 Super Duty 7.3L

2" Street/Strip Package 2015-2024 Mustang GT/GT500

2" Street/Strip Package - 2016+ Camaro SS/ZL1

2" Street/Strip Package 2006-2013 C6 Z06/ZR1 Corvette 7.0L/6.2L

2" Street/Strip Package 2014-2019 C7 Corvette 6.2L

2" Street/Strip Package 2015+ Dodge Charger/Challenger Hellcat & 6.1L/6.4L
1-7/8" LT Swap Header & Catted Conn. Kit. 1967-69 Camaro, Firebird, Trans Am.
1-7/8" LT Swap Header & GREEN Cat Conn. Kit. 1967-69 Camaro, Firebird, Trans Am.
2" LT Swap Header & GREEN Cat Conn. Kit. 1967-69 Camaro, Firebird, Trans Am.

1-7/8" x 2" Tri-Y Headers and Ultra GREEN Cats. 2022+ Chevrolet Corvette Z06.
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1-7/8" x 2" Tri-Y Headers, Ultra GREEN Conns. & Heat Blankets. 22+ Corvette Z06.

1-7/8" Long Tube Header and GREEN Catted Conn. Kit. 23+ Cadillac Escalade V.

1-7/8" Long Tube Header & H.O. GREEN Catted Conn. Kit. 23+ Cadillac Escalade V.

Stepped Header and H.O. GREEN Connection Kit. Charger/Challenger Hellcat 6.2L