Name: O2 Extension Harness
Brand: ZZPerformance
SKU: ZZ-O2EXHN-1A
Price: 15.0 USD
Availability: InStock

Wire Harnesses & Adapters - O2 Extension Harness

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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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harness
issue
downpipe
quality
website
O2 sensor
wbodystore
length
extension

AB

06/02/2022

Austin B.

United States

Very good

Easy to install, good quality, and good packing

O2 Extension Harness

CS

04/06/2022

Chris S.

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.

O2 Extension Harness