Product Description

Michigan Motorsports Premium 24" O2 Header Sensor Extension Harness

Heat-Protected Plug-and-Play O2 Extensions for LS & LT GM Applications

The Michigan Motorsports Premium 24-inch O2 Oxygen Sensor Extension Harness kit is engineered to provide a clean, reliable solution when installing aftermarket headers or exhaust systems on GM LS and LT-based vehicles. Aftermarket headers and H-pipes often relocate the oxygen sensor bungs farther downstream, making factory wiring too short. These premium extensions eliminate the need to cut or splice OEM wiring while maintaining accurate sensor readings. Each harness is wrapped in a fiberglass heat-resistant sleeve to protect against extreme exhaust heat, ensuring long-term durability and dependable performance.

Key Features

Premium Heat Protection: Features a fiberglass heat-resistant sleeve to shield wiring from exhaust heat generated by headers and H-pipes.
24" Extension Length: Provides ample reach when oxygen sensor locations are moved rearward by aftermarket exhaust components.
Plug-and-Play Installation: Installs without cutting or splicing factory wiring, preserving OEM signal integrity.
OEM-Grade Components: Uses genuine GM Delphi/Packard connectors, terminals, and seals to match factory wiring standards.
Correct Black Square Connector: Designed for vehicles using the black square 4-pin O2 sensor plug (not compatible with gray square connectors).

Key Fitments

LS Camaro & Firebird: Fits 1998–2002 LS1 Camaro & Firebird applications.
LT1 Camaro & Firebird: Compatible with 1993–1997 LT1 Camaro & Firebird models.
LS Engines: Fits 1997–2004 LS1/LS6 and 2005–2008 LS2, LS3, and LS7 applications using black square connectors.
Corvette Applications: Compatible with 1997–2003 Corvette downstream oxygen sensors only.

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5
O2 extensions

Posted by Brandon on Jul 9th 2021

Great product! Fitment and length was perfect, quality connection with protective wire sleeve, must have for longtube header installation!
5
O2 extension harness

Posted by Levi on Jan 4th 2021

Outstanding quality an awesome fitment for a long tube install.
5
Extension harness

Posted by Allan E Napier on Jul 23rd 2020

Great fit quality wire should have read in depth ordered 2 too many was sketchy on how many too order
5
Perfect!

Posted by Henry R. on Jul 25th 2019

High quality product, great to do business with Michigan Motorsports.

LS1 LS2 LS6 O2 Header Extension Wire Harness 24" Premium O2 Oxygen Sensor Extension