Designed for reliable signal transmission, this 12-inch O2 extension harness supports 4-pin front oxygen sensors on select Pontiac GTO and CTS-V models. It provides the added length required when aftermarket long tube headers or custom exhaust setups shift sensor locations further from the original harness. Built with high-temperature-resistant wiring and OEM-style connectors, it ensures consistent fitment and durable use in demanding environments.
The harness is plug-and-play, eliminating the need for cutting or splicing wires, and it integrates smoothly with the vehicle's factory harness. This extension is ideal for 2004–2009 Pontiac GTOs and Cadillac CTS-Vs requiring precise oxygen sensor functionality after exhaust upgrades.
Key Features:
Compatible with 4-pin front O2 sensors on 2004–2009 Pontiac GTO and CTS-V models
12-inch overall length accommodates relocated oxygen sensor bungs
High-temperature-resistant wiring and protective sleeving for durability
OEM-style connectors for factory-style plug-in installation
Ideal for vehicles using Kooks long tube headers or similar exhaust modifications
No splicing or modification required—fully plug-and-play design
Maintains accurate sensor signal integrity for proper engine management
Manufactured for long-lasting electrical performance in performance exhaust systems
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