Summit Racing SpeedCard - learn how to get 10% back up to $100

Make/Model Search
Make/Engine Search

Brands
Savings Central
Contact Us
Help Center

My Garage
Wish List
Order Status & Returns

Welcome
My Account

Order Status

Wish List
Savings Central
Shop by Brand
Shop Your Passion
- Shop Your Passion
- Truck / SUV
  
  Jeep®
  
  Restoration
  
  Stock Replacement
  
  Late Model Muscle
  
  Tools
  
  Gifts, Clothing, & More
  
  Circle Track
  
  Street Rod
  
  Powersports
  
  Paint & Body
  
  Marine
  
  Jr Dragster
Gift Cards
My Garage
See Our Catalogs
News & Events
Career Opportunities
Contact Us
Help Center
New Products
Shop by Make/Model
Sign In

Search Make/Model

Search Make/Engine

Sign In

Welcome
Account Dashboard
Profile
Order Status & Returns
Buy It Again
Wish List
Rewards Program
Gift Cards & Summit Bucks
Address Book
My Garage Settings
Email Preferences
Text Notifications
My Reviews
My Questions
Catalogs
Tax Exemption
Sign In

Summit Racing SpeedCard - learn how to get 10% back up to $100

Save Now on Winter Essentials for Your Ride!

Filters

In Stock
- All Items, Including Not In Stock (14) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Make/Engine
Drivetrain
- RWD (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 4WD (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- AWD (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Primary Tube Outside Diameter (in.)
- 2 in. (11) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 1 7/8 in. (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Cylinder Head Port Shape
- Oval (5) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Round (5) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- D-port (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Collector Attachment
- Ball and socket flange (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Slip fit (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Air Conditioning
- Yes (14) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- No (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Standard Transmission Floor Shift
- Yes (9) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- No (8) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Automatic Transmission Floor Shift
- Yes (14) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- No (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Crossover Pipe Included
- No (11)
- Yes (3)
Crossover Pipe Style
- Y-pipe (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- X-pipe (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Crossover Pipe Diameter
- 3.000 in. (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
In Stock
Savings Central
- Free Shipping (13)

Selected Filters

Filter Results by Vehicle

Loading...

Home
Headers
Kooks Headers Header and High Output GREEN Catted Connection Kits
Product Results

Filters

Make/Model
Make/Engine
Drivetrain
- RWD (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 4WD (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- AWD (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Primary Tube Outside Diameter (in.)
- 2 in. (11) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 1 7/8 in. (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Cylinder Head Port Shape
- Oval (5) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Round (5) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- D-port (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Collector Attachment
- Ball and socket flange (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Slip fit (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Air Conditioning
- Yes (14) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- No (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Standard Transmission Floor Shift
- Yes (9) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- No (8) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Automatic Transmission Floor Shift
- Yes (14) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- No (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Crossover Pipe Included
- No (11)
- Yes (3)
Crossover Pipe Style
- Y-pipe (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- X-pipe (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Crossover Pipe Diameter
- 3.000 in. (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Savings Central
- Free Shipping (13)

Kooks Headers

Kooks Headers Header and High Output GREEN Catted Connection Kits

Not Yet Reviewed

Kooks Headers Header and High Output GREEN Catted Connection Kits are performance exhaust upgrades for a vehicle, consisting of long-tube exhaust headers and high-o

Kooks Headers Header and High Output GREEN Catted Connection Kits are performance exhaust upgrades for a vehicle, consisting of long-tube exhaust headers and high-output, EPA-verified catalytic converters (the "GREEN Cats") integrated into a connection pipe. They are application-specific, designed for a particular vehicle model and year—and are engineered to improve engine power, torque, and sound by allowing the engine to "breathe" more easily, while still meeting emissions standards. The "GREEN" designation refers to the specific type of high performance catalytic converter with a lower 400 CPSI substrate, making i

Kooks Headers Header and High Output GREEN Catted Connection Kits are performance exhaust upgrades for a vehicle, consisting of long-tube exhaust headers and high-output, EPA-verified catalytic converters (the "GREEN Cats") integrated into a connection pipe. They are application-specific, designed for a particular vehicle model and year—and are engineered to improve engine power, torque, and sound by allowing the engine to "breathe" more easily, while still meeting emissions standards. The "GREEN" designation refers to the specific type of high performance catalytic converter with a lower 400 CPSI substrate, making it suitable for high-horsepower applications. Kits are available with 1 7/8 in. or 2 in. primary tube outside diameter.

Key components and features:

* Headers: These are long, mandrel-bent tubes made from 304 stainless steel that replace the restrictive factory exhaust manifolds.
* High-Output GREEN Catted Connection Pipes: These are the pipes that connect to the headers and feature Kooks' Ultra High Performance GREEN Cats.
* High-Output GREEN Cats: These are high-flow catalytic converters designed to reduce emissions while handling high horsepower levels.
* Installation Hardware: The kit includes all necessary gaskets, clamps, and hardware, and in some cases, oxygen sensor extension harnesses, for a complete installation.
* OEM Connection Point: The connection pipes are designed to bolt up to the vehicle's factory exhaust system.
* Application-Specific Design: Kooks provides these kits for a variety of vehicles, such as Mustangs and Dodge Challengers, to ensure a proper fit and optimal performance

All the results found for this search are Not In Stock.

Results 1 - 14 of 14

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H442

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H442

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H442

Exhaust Header

Part Number: KOK-1151H442

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 17, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 3521H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 3521H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 3521H640

Headers, Green Cats, 2.00 in. Primary Tubes, 3.00 in., Ram, 1500 TRX, 6.2L Hemi, 304 Stainless Steel, Kit

Part Number: KOK-3521H640

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 30, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H642

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H642

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H642

Exhaust Header

Part Number: KOK-1151H642

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 30, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 2864H440

Kooks Headers Header and High Output GREEN Catted Connection Kits 2864H440

Kooks Headers Header and High Output GREEN Catted Connection Kits 2864H440

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

Part Number: KOK-2864H440

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 30, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 3101H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 3101H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 3101H640

2" Header, 2" Header & H.O. GREEN Conn Kit. Charger, Challenger, Magnum, 300C 6.1L/6.4L

Part Number: KOK-3101H640

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 30, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 1400H440

Kooks Headers Header and High Output GREEN Catted Connection Kits 1400H440

Kooks Headers Header and High Output GREEN Catted Connection Kits 1400H440

Headers, Header and High Output GREEN Catted Connection Kit, Long Tube One-piece, Oval Port, Stainless, Natural, 3.0 in. Collector, Ford, 7.3L Gas,Kit

Part Number: KOK-1400H440

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 30, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 1400H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 1400H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 1400H640

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

Part Number: KOK-1400H640

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 30, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 2250H630

Kooks Headers Header and High Output GREEN Catted Connection Kits 2250H630

Kooks Headers Header and High Output GREEN Catted Connection Kits 2250H630

Exhaust System Kit, 2" Header and GREEN Connection Kit. 2010-2015 Chevrolet Camaro SS/ZL1 6.2L.

Part Number: KOK-2250H630

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 11, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 2260H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 2260H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 2260H640

Headers, Header and High Output GREEN Catted Connection Kit, Long Tube One-piece, Stainless Steel, Natural, Oval Port, Chevrolet, 6.2L Gen V, Kit

Part Number: KOK-2260H640

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 11, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 3103H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 3103H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 3103H640

2" Header, 2" Header and H.O. Green Connection Kit. 2015+ Dodge Hellcat 6.2L HEMI

Part Number: KOK-3103H640

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 17, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 2170H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 2170H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 2170H640

2" Header, 2" Header and H.O. GREEN Connection Kit. 2014-2019 Corvette LT1/LT4/LT5 6.2L

Part Number: KOK-2170H640

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 17, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 3103H641

Kooks Headers Header and High Output GREEN Catted Connection Kits 3103H641

Kooks Headers Header and High Output GREEN Catted Connection Kits 3103H641

Headers, Header and High Output GREEN Catted Connection Kit, Long Tube One-piece, Stainless, Natural, D-port, 2 in. Primary Tube O.D., Dodge, Kit

Part Number: KOK-3103H641

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 17, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H6SS

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H6SS

Kooks Headers Header and High Output GREEN Catted Connection Kits 1151H6SS

Exhaust Header

Part Number: KOK-1151H6SS

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 17, 2026 if ordered today

Kooks Headers Header and High Output GREEN Catted Connection Kits 1156H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 1156H640

Kooks Headers Header and High Output GREEN Catted Connection Kits 1156H640

2" x 3" Headers & H.O. GREEN Catted Connection Kit - 2020 Mustang GT500 5.2L

Part Number: KOK-1156H640

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 17, 2026 if ordered today

1

Page 1 of 1

Modal Header

Contact us with questions.

Call To Order

This is a custom order part. You can order this part by Contacting Us.

Summit Racing Speedcard. Synchrony Car Care.

Summit Racing Equipment SpeedCard

Jumpstart Your Next Project!

View Details|See if you Prequalify

Stay Updated with Emails from Summit Racing

Never miss a sale on new parts, tools, and more!

= Required

First Name

Last Name

Email Address Email required

See Our Catalogs

News & Events

News & Events Home
OnAllCylinders (blog)
Calendar of Events
New Product Releases
Summit Racing News
News You Can Use
Featured Vehicles
Media Center
Sanctioning Bodies

Help

Help Center
Return Policy
Beat-A-Price Guarantee
Payment Options
Contact Us

Social

Facebook
X/Twitter
Instagram
Pinterest
YouTube
Podcast

About Summit

Corporate History
Retail Locations

My Account

Profile
Email Preferences
Order Status & Returns
Wish List
Address Book
My Reviews
My Questions
My Garage
Sign In

Career Opportunities

More

Summit Racing Credit Card
Gift Cards
Calculators & Tools
Promo Exclusions
Become an Affiliate
Summit Racing Rewards Program
Summit Racing Equipment Protection Plan

Terms of Use | Privacy and Security | Site Accessibility
Copyright 2026 by AUTOSALES, INCORPORATED
dba Summit Racing Equipment | Trademarks

Let's Build it Together^™

Modal Header