Gen 4 oxygen sensor extension harness (4 wire triangle gray)

APPLICATION: Gen 4 LS/Vortec engines (4 triangle grey connector)

ADDITIONAL ITEMS REQUIRED: ACC-1003

PARTS INCLUDED: Includes 1 plug and play O2 sensor extension harness.

NOTES: Extensions are for use with Gen 4 07 - 14 LS/Vortec Engines. Allows plug-in solution requiring no harness modification. All extensions are made from high-temp TXL (Cross Linked Polyethylene) wire and genuine GM Delphi components. All these extension harnesses are 18-inches in length and are direct plug and play.

Gen 3 98 - 03 O2 sensor uses HAR-1010. Gen 3 03 - 07 O2 sensor uses HAR-1024. Gen 5 2014+ uses O2 sensor HAR-2015.

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- 10/21/2025
  
  Great service.
  
  Quick reply and delivery. Highly recommend.
  
  Cb
- 07/30/2021
  
  Just Great!
  
  another good part from a great company and shipping was fast!!
  
  Rusty
- 07/07/2019
  
  Quality product and fast shipping
  
  This is exactly what I needed for my LS swapped 1969 Camaro that I added long tube headers to.
  
  Jason
Applications

Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA and are 100% Computer Quality Tested. In addition to wiring harnesses, PSI carries Holley Products, Vintage Air A/C, Dakota Digital Gauges, HPTuners and PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion!

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Gen 4 oxygen sensor extension harness (4 wire triangle gray)

Gen 4 oxygen sensor extension harness (4 wire triangle gray)

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