Pacemaker Oxygen Sensor Wiring Extensions PEX4178 – Ford Mustang 5.0L V8 Series 1 2014–2018
$149.95
Tax included
Pacemaker Oxygen Sensor Wiring Extensions PEX4178 – Ford Mustang 5.0L V8 Series 1 2014–2018
Pacemaker PEX4178 Oxygen Sensor Wiring Extensions are genuine Pacemaker extension harnesses designed for Ford Mustang 5.0L V8 Series 1 models from August 2014 to June 2018 when fitting applicable Pacemaker performance headers. The kit includes 2 x 6-pin / 6-wire oxygen sensor extensions with approximately 250mm wire length and protective sleeving.
Designed for use with Pacemaker PH4177 and PH4178 Headers, these extensions provide the additional wiring length required for correct oxygen sensor connection without cutting or splicing the vehicle's original wiring harness.
Pacemaker PEX4178 Oxygen Sensor Wiring Extensions – Ford Mustang 5.0L V8 Series 1 2014–2018
Pacemaker PEX4178 Oxygen Sensor Wiring Extensions are genuine Pacemaker accessories designed for Ford Mustang 5.0L V8 Series 1 models from August 2014 to June 2018 when installing applicable Pacemaker performance headers.
Performance headers can reposition the oxygen sensors further away from the original factory wiring connectors. The PEX4178 extensions provide approximately 250mm of additional wire length, allowing the oxygen sensors to connect correctly without cutting, splicing or modifying the Mustang's original wiring harness.
These extensions feature 6-pin / 6-wire connectors and are designed for applicable installations using Pacemaker PH4177 and PH4178 Headers.
Key Features
- Genuine Pacemaker accessory
- Designed for Ford Mustang 5.0L V8 Series 1 applications
- Vehicle range: August 2014 to June 2018
- Designed for applicable PH4177 & PH4178 Pacemaker Headers
- 2 oxygen sensor extension harnesses supplied
- 6-pin connectors
- 6-wire configuration
- Approximately 250mm wire length
- Factory-style plug-and-play connections
- No cutting or splicing of the original oxygen sensor wiring
- Protective outer sleeving
Specifications
- Part Number: PEX4178
- Component: Oxygen sensor wiring extensions
- Vehicle: Ford Mustang Series 1
- Engine: 5.0L V8
- Vehicle Range: 08/2014 to 06/2018
- Connector: 6 Pin
- Wires: 6
- Wire Length: Approximately 250mm
- Quantity: 2
- Brand: Pacemaker
Pacemaker Header Applications
- PH4177 Pacemaker Headers
- PH4178 Pacemaker Headers
What's Included
- 2 x Pacemaker PEX4178 Oxygen Sensor Wiring Extensions
Recommended With
- PH4177 Pacemaker Headers
- PH4178 Pacemaker Headers
- High-temperature anti-seize compound for oxygen sensor threads
Fitment Notes
- Designed for applicable Ford Mustang 5.0L V8 Series 1 models from August 2014 to June 2018.
- Designed for applicable Pacemaker PH4177 and PH4178 header installations.
- This kit contains 2 oxygen sensor extension harnesses.
- Each extension uses a 6-pin / 6-wire connector.
- Each extension has approximately 250mm wire length.
- Check the connector configuration against the original oxygen sensors before ordering.
- Route wiring away from headers, collectors and other high-temperature exhaust components.
- Ensure the wiring is securely supported and cannot contact hot or moving components.
- Do not allow the wiring harness to twist when installing or removing the oxygen sensors.
Why Oxygen Sensor Extensions Are Required
Performance headers can relocate the oxygen sensor mounting positions further away from the factory wiring connectors. The original oxygen sensor wiring may therefore be too short to safely reach the new sensor locations.
The PEX4178 extension harnesses provide approximately 250mm of additional wiring while retaining factory-style electrical connections. This provides a clean installation without cutting or splicing the Mustang's original oxygen sensor wiring.
Warranty & Installation
- Genuine Pacemaker accessory designed for applicable Pacemaker performance header installations.
- Check vehicle application and connector configuration before installation.
- Keep wiring and connectors clear of direct exhaust heat.
- Secure each extension to prevent contact with headers, exhaust pipes or moving components.
- Damage caused by incorrect routing, excessive heat or incorrect installation is not considered a manufacturing defect.
Frequently Asked Questions
What is PEX4178 used for?
PEX4178 provides additional oxygen sensor wiring length when installing applicable Pacemaker Headers on Ford Mustang 5.0L V8 Series 1 models.
Which Pacemaker Headers use these extensions?
PEX4178 is designed for applicable installations using PH4177 and PH4178 Pacemaker Headers.
What year Mustang does PEX4178 suit?
PEX4178 is listed for applicable Ford Mustang 5.0L V8 Series 1 models from August 2014 to June 2018.
How many extensions are supplied?
The PEX4178 kit includes 2 oxygen sensor wiring extensions.
How long are the extensions?
Each extension has approximately 250mm of wire length.
What connector does PEX4178 use?
Each extension uses a 6-pin connector with 6 wires.
Do I need to cut the factory oxygen sensor wiring?
No. The extensions connect between the factory wiring harness and oxygen sensors without cutting or splicing the original vehicle wiring.
What is the difference between PEX4178 and PEX4178-2?
PEX4178 is listed for Ford Mustang 5.0L V8 Series 1 applications from August 2014 to June 2018. PEX4178-2 is the extension kit used for applicable Series 2 applications from June 2018 onwards. Check your vehicle build date and connector configuration before ordering.
Are these genuine Pacemaker parts?
Yes. PEX4178 is a genuine Pacemaker oxygen sensor extension kit designed for applicable Pacemaker header installations.
Do you ship Australia wide?
Yes. Best Mufflers ships Pacemaker Headers, oxygen sensor extensions and exhaust components throughout Australia.
Do you ship to the USA?
Yes. Best Mufflers ships Pacemaker products and exhaust components to customers throughout the United States. International freight and applicable import charges are additional.
Customer Support
For phone orders, advice, or part enquiries – contact us:
📞 Call Now: +61 2 9547 3511 ✉️ Email Us
🇦🇺 Best Mufflers
87A Planthurst Road, Carlton NSW 2218, Australia
Mon–Fri 8:00am–5:00pm (by appointment only)
Exhaust Systems Since 1983
PEX4178
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Pacemaker Oxygen Sensor Wiring Extensions PEX4178 – Ford Mustang 5.0L V8 Series 1 2014–2018
Pacemaker PEX4178 Oxygen Sensor Wiring Extensions are genuine Pacemaker extension harnesses designed for Ford Mustang 5.0L V8 Series 1 models from August 2014 to June 2018 when fitting applicable Pacemaker performance headers. The kit includes 2 x 6-pin / 6-wire oxygen sensor extensions with approximately 250mm wire length and protective sleeving.
Designed for use with Pacemaker PH4177 and PH4178 Headers, these extensions provide the additional wiring length required for correct oxygen sensor connection without cutting or splicing the vehicle's original wiring harness.