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Kooks 1-7/8" x 3" Long Tube Headers & GREEN Catted Connection Kit for 2020 and 2022 Ford F-250/F-350 Super Duty 7.3L V8
The Kooks 1400H430 1-7/8-inch long tube headers and GREEN catted connection kit delivers the complete bolt-on exhaust upgrade for 2020 and 2022 Ford F-250 and F-350 Super Duty trucks with the 7.3L Godzilla V8, replacing factory manifolds to provide dyno-proven gains of 50 and 70 rear-wheel horsepower and 45 and 65 lb-ft of torque through equal-length primaries, merged collectors, and high-flow 3-inch GREEN catted pipes that connect directly to the OEM mid-section for unrestricted exhaust flow from low-end grunt to high-RPM towing power.
Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut oval-port flanges, full TIG welds, and 400-cell metallic substrate GREEN catalytic converters, this system supports up to 850 HP while maintaining 49-state emissions compliance and improving throttle response for quicker acceleration during heavy hauls up to 21,000 lbs or daily highway passing. The precision design preserves ground clearance and heat management for work-ready Super Duty trucks without sacrificing the deep V8 rumble that enhances cabin experience.
For F-250/F-350 7.3L owners seeking immediate power and torque improvements with durable, emissions-legal construction, the 1400H430 kit unlocks the Godzilla engine's full potential for job sites, trails, or performance driving.
Key Features
- 1-7/8-inch equal-length mandrel-bent primaries for optimal scavenging
- 3-inch GREEN high-flow 400-cell metallic catalytic converters
- Full T304 stainless steel with TIG welds and 3/8-inch oval-port flanges
- Merged collectors for maximum exhaust velocity
- Direct bolt-on to OEM mid-pipe no cutting required
- Dyno gains of 50 and 70 RWHP and 45 and 65 RWTQ on stock 7.3L
Product Notes
- 49-state EPA compliant not for sale or use in California or CARB states without exemption
- Fits all cab/bed configurations with 7.3L V8 gas engine
- Includes O2 sensor extensions and EGR provisions
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime on stainless construction to original purchaser.
Installation Notes
- Professional installation recommended lift required
- Remove factory manifolds and bolt headers to cylinder heads
- Connect catted pipes to collectors and OEM mid-section with supplied hardware
- Torque flanges to 25-30 ft-lbs and run drive cycle for ECU adaptation
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. Excludes Power Stroke diesel.
What's Included in the Purchase
- (2) 1-7/8" x 3" Long-Tube T304 Stainless Headers with Merged Collectors
- (2) 3" GREEN Catted Connection Pipes
- Gaskets, Stage 8 Locking Header Bolts, and Hardware Kit
- O2 Sensor Extensions
- Detailed Installation Instructions
- Part Number: Kooks 1400H430
Why Choose Kooks?
- Over 60 years of exhaust engineering with NHRA, NASCAR, and SCCA championships
- Handcrafted in the USA from T304 aircraft-quality stainless steel
- Limited lifetime warranty and dyno-proven for reliable power
Frequently Asked Questions
-
Q: Does this fit my 2021 F-350 Lariat 7.3L?
A: Yes, direct bolt-on for all 2020 and 2022 F-250/F-350 with 7.3L V8 gas -
Q: Will it cause a check engine light?
A: No, GREEN cats and extensions maintain proper O2 sensor function -
Q: What power gains can I expect?
A: 50 and 70 RWHP and 45 and 65 RWTQ on stock tune, more with ECU optimization -
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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