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Kooks 3" GREEN Catted Connection Pipes for 2020 and 2022 Ford F-250/F-350 Super Duty 7.3L V8
The Kooks 3-inch GREEN catted connection pipes complete the exhaust upgrade on 2020 and 2022 Ford F-250 and F-350 Super Duty trucks with the 7.3L Godzilla V8, linking Kooks long tube headers to the factory mid-pipe for seamless integration that maintains emissions compliance while adding 20 and 30 rear-wheel horsepower and 25 and 40 lb-ft of torque through high-flow 400-cell metallic substrate GREEN catalytic converters and mandrel-bent tubing.
Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut flanges and full TIG welds, these pipes ensure zero leaks under high EGTs exceeding 1,600°F and support up to 850 HP from tunes or cams without sacrificing ground clearance or heat management. The direct bolt-on design preserves the Super Duty's towing capability up to 21,000 lbs while enhancing throttle response and delivering a deeper V8 rumble without cabin drone.
For F-250/F-350 7.3L owners pairing Kooks headers with stock exhaust, the 14003400 GREEN catted connection pipes provide the essential emissions-legal link that maximizes power and reliability for work or play.
Key Features
- 3-inch mandrel-bent T304 stainless steel tubing
- GREEN 400-cell high-flow metallic catalytic converters
- Direct bolt-on to Kooks headers and OEM mid-pipe
- 3/8-inch laser-cut flanges with full TIG welds
- Supports 850+ HP with proper tuning
- Preserves factory ground clearance and heat shielding
Product Notes
- 49-state EPA compliant not for sale or use in California or CARB states without exemption
- Requires Kooks long tube headers for proper fitment
- Includes all hardware and gaskets
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime on stainless construction and 25,000 miles on catalytic converters to original purchaser.
Installation Notes
- Professional installation recommended lift required
- Bolt pipes to Kooks header collectors with supplied gaskets
- Connect to OEM mid-pipe using included hardware
- Torque flanges to 25-30 ft-lbs and check for leaks after heat cycle
This Part Fits
| Year | Make | Model | Submodel/Engine |
|---|---|---|---|
| 2020 and 2022 | Ford | F-250 Super Duty | XL, XLT, Lariat, King Ranch, Platinum 7.3L V8 Gas |
| 2020 and 2022 | Ford | F-350 Super Duty | XL, XLT, Lariat, King Ranch, Platinum 7.3L V8 Gas |
Note: Fits all cab styles and drivetrains with 7.3L V8 gas engine and Kooks headers. Excludes diesel.
What's Included in the Purchase
- (2) 3" GREEN Catted Connection Pipes
- Gaskets and Flange Hardware Kit
- Detailed Installation Instructions
- Part Number: Kooks 14003400
Why Choose Kooks?
- Over 60 years of championship-winning exhaust engineering
- Handcrafted in the USA from T304 aircraft-quality stainless steel
- Limited lifetime warranty and dyno-proven performance
Frequently Asked Questions
-
Q: Does this work with stock headers?
A: No, designed specifically for Kooks long tube headers -
Q: Is it emissions legal?
A: Yes, 49-state EPA compliant with GREEN cats -
Q: How much power does it add?
A: 20 and 30 RWHP when paired with Kooks headers -
Do Kooks headers require a tune after installation?
Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation. -
Will these headers void my factory powertrain warranty?
Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure. Consult your dealer for specifics on your situation. -
Q: Do these Kooks headers require a tune after installation?
A: Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation. -
Q: Will Kooks headers void my factory powertrain warranty?
A: Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure in question. Consult your dealer for specifics. -
Q: What warranty does Kooks provide?
A: Kooks products are backed by a limited lifetime warranty to the original purchaser against defects in materials and workmanship. Racing and competition use applications may have specific warranty exclusions. Contact Kooks Performance directly for warranty details.
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Heavy-duty box with foam protection.
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