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

110 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) 

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 110 Reviews
5 ★
89% 
98
4 ★
9% 
10
3 ★
1% 
1
2 ★
1% 
1
1 ★
0% 
0
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AB
06/02/2022
Austin B.
United States

Very good

Easy to install, good quality, and good packing

CS
04/06/2022
Chris S.
United States United States

Perfect

It was perfect. This fixed my issue with the relocated o2 sensor. This company have amazing customer service skills and I will be a life time customer.

SD
04/05/2022
Stephen D.
Canada Canada

Extensions

It fit as it should,and works like it should as well just like every product zzp sells.

CC
04/03/2022
Cody C.
United States United States

USPS Forward my packages from billing

Great website...

JW
03/13/2022
Jonathan W.
United States United States

O2 extension

Ordered it, came quick and plugged right in. Good quality wire and sheath for it all.

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