O2 Extension Harness

$15.00 

97 reviews



This variant is currently out of stock

Wire Harnesses & Adapters - O2 Extension Harness
Wire Harnesses & Adapters - O2 Extension Harness
Wire Harnesses & Adapters - O2 Extension Harness
Wire Harnesses & Adapters - O2 Extension Harness

Most header kits will require this because the primary (front) O2 sensor is mounted further down the header rather than right next to the head like it is mounted in the factory rear manifold. All of our o2 extensions are 27" long.

Different models:

A. '97-05 Grand Prix (front)/Regal, 04-07 Cobalt/Redline 2.0L, '00+ Monte Carlo/Impala/Bonneville.

B. '04-07 Grand Prix Rear, '06+ Cobalt 2.4L, '08+ HHR (rear O2)

C. '06+ Grand Prix front, 06+ HHR 2.4L (front) 

Please verify the style of O2 plug you will need by looking at your actual plug on the car. Some early model cars have used the previous model O2 plug.

The 2004+ Grand Prix rear O2 is mounted far forward, so when you install a ZZP downpipe you will need to pick up the "B"('04-07) & "C"('08) o2 extension so you can use the factory rear O2 sensor.

Wire Harnesses & Adapters - O2 Extension Harness
Wire Harnesses & Adapters - O2 Extension Harness
Wire Harnesses & Adapters - O2 Extension Harness
Wire Harnesses & Adapters - O2 Extension Harness
Customer Reviews
4.9 Based on 97 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • Shipping
  • engine
  • experience
  • parts
  • o2 sensor harness
  • tube headers
  • Pluged
  • room
  • harness
  • problem
TC
10/22/2020
tim c.
United States United States
Exactly what I needed

Perfect for what I needed it for

DC
10/16/2020
Debbie C.
United States United States
Good product. Have purchased two of them for different builds. Well made!!

Good no problem

WT
09/29/2020
Wayne T.
United States United States
O2 extension harness

The experience was great I bought a o2 sensor harness, shipping was fast. I haven't used the harness yet I have to install the engine.

BM
08/27/2020
Brian M.
United States United States
Great product, fast shipping

This is a must have for installing headers on a GTP.

KD
05/17/2020
Kyle D.
United States United States
A++

Very fast shipping!! Only took like 2 days to receive and exactly what I needed for long tube headers.