ETL INDUSTRIES O2 Oxygen Sensor Extension Harness for Ford Mustang 4.6L 5.0L 351W 1987-2009 – 12" 4-Pin Circular Connector (2Pcs
ETL INDUSTRIES O2 Oxygen Sensor Extension Harness for Ford Mustang 4.6L 5.0L 351W 1987-2009 – 12" 4-Pin Circular Connector (2Pcs
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Extend your oxygen sensor with this 12" 4-pin extension harness.
Designed for 1987-2009 Ford Mustang with 4.6L, 5.0L, and 351W engines. Circular 4-pin connector. 2 pieces included.
Compatibility:
✅ 1987-1993 Ford Mustang 5.0L (Fox Body)
✅ 1994-1998 Ford Mustang 5.0L / 4.6L (SN95)
✅ 1999-2004 Ford Mustang 4.6L (New Edge)
✅ 2005-2009 Ford Mustang 4.6L / 5.0L (S197)
✅ Ford Mustang 351W (various years)
⚠️ Important Fitment Check:
- Uses 4-pin circular connector
- Please verify your factory O2 sensor plug matches before ordering
Specs:
| Specification | Detail |
|---------------|--------|
| Length | 12 inches |
| Pin Count | 4-Pin |
| Connector Type | Circular |
| Quantity | 2 pieces |
| Material | High-temperature resistant wiring |
What's Included:
- 2 x Oxygen Sensor Extension Harnesses
Why Choose ETL INDUSTRIES:
- OEM-quality connectors — direct plug-and-play
- 100% tested during production
- 24-hour customer support
Not sure if it fits? Message us with your Mustang year/engine and a photo of your O2 sensor plug.
Backed by ETL INDUSTRIES:
- ⏱️ 24-hour customer service
- 📦 1-year warranty
Product features
Product features
Materials and care
Materials and care
Merchandising tips
Merchandising tips
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Good quality extensions for O2 sensors. Connections fit perfect. Shipped fast. Good price
If you’ve installed long-tube headers on your Mustang, these extensions are a lifesaver. The 12-inch length provides just enough slack to reach the relocated O2 bung without any tension on the wires.The build quality is excellent—the 4-pin connectors snapped right into my factory harness with a satisfying "click," and the heat-resistant shielding feels durable enough to handle the engine bay's high temps. I used these on my '01 GT, and they provided the extra length I needed. No splicing, no soldering, just plug-and-play simplicity.These harnesses are a high-quality, essential solution for any aftermarket exhaust setup, featuring a perfect fit for Ford 4-pin sensors and robust protective looming that ensures long-term reliability.
I used these on a 2004 ford mustang mach 1 , which has a 32v 4.6L dohc v8 engine. With an upgraded high flow cat mid pipe made by Bassani, these worked fine when having to use them to connect the rear o2 original factory sensors back to the engine harness end of the connections.Easy to install - sort of when hooking to the o2 sensors. Keep these tucked away from the hot exhaust pipe of course and they should run fine for years to come.