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Kooks Headers 1400H640 2" Header & H.O. Green Cat Connection Kit F250/F350 Super Duty 7.3L

(2020-2026 Ford F-250 Super Duty; 2020-2026 Ford F-350 Super Duty)

Manufacturer

Picture for manufacturer Kooks Headers

Part Number

1400H640
5 reviews
Sale Price

$3,126.30

Estimated ship date Saturday, November 28

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Kooks Headers 1400H640 is a complete 2" Header and High-Output GREEN Cat Connection Kit engineered for the 2020–2022 Ford F-250 and F-350 Super Duty equipped with the 7.3L engine. Designed to maximize exhaust flow and unlock significant horsepower and torque gains over the restrictive factory exhaust manifolds, this kit is a direct upgrade for serious truck owners demanding more performance from their Super Duty.

Key Features:

  • 2" Primary Tube Diameter — optimized for maximum flow and low-end torque on the 7.3L pushrod V8
  • T304 Aircraft-Quality Stainless Steel Construction — corrosion-resistant and built to withstand extreme heat cycles
  • H.O. GREEN Catalytic Converter Connection — includes a high-output GREEN series catalytic converter connection for emissions-compliant performance
  • Dyno and Race Tested — engineered and validated on the dyno and track for proven power gains
  • Manufactured in the USA — proudly made in Kooks' American facility with premium materials and craftsmanship
  • Limited Lifetime Warranty — backed by Kooks' limited lifetime warranty to the original purchaser
  • Direct-Fit Design — engineered specifically for the 2020–2022 F-250/F-350 Super Duty 7.3L for a precise, hassle-free installation

Kooks Headers has been a trusted name in performance exhaust manufacturing for decades, producing race-proven headers and exhaust components for street, strip, and off-road applications. The 1400H640 kit delivers the quality and performance Kooks is known for, giving your Super Duty the exhaust it deserves.

Products specifications

Fits

2020-2026 Ford F-250 Super Duty; 2020-2026 Ford F-350 Super Duty

Additional Parts Required

No

Gasket Or Seal Included

Yes

Tube Wall Thickness

16 Gauge

Coated Finish

Natural

Prop 65

WARNING: This product can expose you to chemicals including Chromium and Nickel, which are known to the State of California to cause cancer, birth defects or reproductive harm. For more information go to www.p65warnings.ca.gov

FLANGE Thickness

0.375 In.

Head Style

Long-Tube

Application

Automotive

Catalytic Converter Quantity

2

Catalytic Converter(s) Included

Yes

Clamps Included

Yes

Collector Attachment

Stock flange

Collector Attachment

Slip fit

Collector Diameter

3.000 in.

Color

Stainless Steel

Cylinder Head Port Shape

Oval

Finish

Natural

Flange Thickness (in)

3/8 in.

Gaskets Included

Yes

Grade Type

Performance

Header Finish

Natural

Header Material

Stainless steel

Header Style

Long Tube

Material

304 Stainless Steel

Mounting Hardware Included

Yes

Port Shape

Oval

Primary Tube Gauge

16-gauge

Primary Tube Outside Diameter (in)

2 in.

Quantity

Sold as a kit.

Great prices!

Very easy

Good price,good product , customer service was on the ball, but shipping took a little bit

Great job

All good.

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