O2 Extension Harness

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

O2 Extension Harness

114 reviews
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Regular price $15.00
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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/Regal/'00+ Monte/Impala/Bonneville (front), '04-07 Cobalt/Redline 2.0L

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

C. '06+ Grand Prix (front), '06+ HHR 2.2/2.4L (front) 

D. 08 Grand Prix (rear)

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.

Customer Reviews
4.9 Based on 114 Reviews
5 ★
89% 
102
4 ★
9% 
10
3 ★
1% 
1
2 ★
1% 
1
1 ★
0% 
0
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CW
12/06/2022
Cory W.
Canada

Worked well with long tube header and dow pipe set up

HM
11/22/2022
Harrison M.
United States United States

Just Buy It.

Just Buy It.

JC
07/03/2022
James C.
United States United States

Extension harness

Fit perfectly. Connectors look O.E.

A ZZPerformance Customer
RS
06/07/2022
Ralph Stacy, Jr.
United States United States

You are gonna need one...

...so you might as well get one that is of good quality, like this one.

AB
06/02/2022
Austin B.
United States United States

Very good

Easy to install, good quality, and good packing

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