Are these O2 sensor extensions legal in California?

No, these O2 sensor extensions are not CARB approved and cannot be shipped to California.

Do these extensions require any cutting or splicing of the factory wiring?

No, these O2 sensor extensions are a direct fit and do not require any cutting or splicing of the factory wiring. They plug directly into the factory O2 sensor connectors.

What is the advantage of using O2 sensor extensions?

When installing long tube headers, the O2 sensor bungs are often relocated further downstream. These extensions allow you to retain the factory O2 sensors without having to modify the factory wiring harness.

Kooks Chrysler 5.7L (09+)/ 6.1L/ & 6.4L Hemi 02 Sensor Exts

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Kooks Headers

Kooks Chrysler 5.7L (09+)/ 6.1L/ & 6.4L Hemi 02 Sensor Exts

Name: Kooks Chrysler 5.7L (09+)/ 6.1L/ & 6.4L Hemi 02 Sensor Exts
Brand: Kooks Headers
Price: 103.01 USD
Availability: InStock

$103.01

Fixes O2 sensor wiring issues when installing long tube headers. Get Kookin' with Kooks!

Key Features

Extends O2 sensor wiring — simplifies long tube header installation
Direct fit — no cutting or splicing required

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Will this fit your vehicle?

Compatible with 96 vehicles

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631-982-0042

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Since 1957

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Product Details

O2 Extension Kit Chrysler 5.7/6.1/6.4 HEMI 2) 6in. Front Extension Harness (4-pin) 2) 18in. Rear Extension Harness (4-pin). Extensions are included in Header kits where needed. This part is a replacment for damaged or lost Extensions.
O2 Extension Kit Chrysler 5.7/6.1/6.4 HEMI 2) 6" Front Extension Harness (4-pin) 2) 18" Rear Extension Harness (4-pin). Extensions are included in Header kits where needed. This part is a replacment for damaged or lost Extensions.

Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!"