Sale

Exhaust› Headers, Manifolds and Components

Kooks Headers

Kooks 18+ Ford Mustang 8in. Front O2 Extension Harness

$37.67 $33.90 Save $3.77

SKU: K009 CAS-109677-8

In Stock
In Stock
Ships by Jul 30
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Kooks Headers CAS-109677-8 is an O2 extension harness designed for 2018+ Ford Mustangs. This 8-inch front extension harness features a 5-pin connector and heat-resistant shielding.

This harness is included in Kooks header kits where needed. It is recommended to order this part number only as a replacement for damaged or lost oxygen sensor extensions.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandKooks Headers
Part NumberK009 CAS-109677-8

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy