SKU: RY-SUB-4-WIRE-O2-EXT-0712
Rywire 4-Wire O2 Sensor Extension Harness 2007+ Honda / Acura
The Rywire RY-SUB-4-WIRE-O2-EXT-0712 4-Wire O2 Sensor Extension Harness is the best plug-and-play solution for 2007+ Honda and Acura models requiring additional length for O2 sensor relocation, custom exhausts, or engine swaps. Hand-assembled in the USA with high-quality TXL wire, OEM-style connectors, and weatherproof seals, this extension maintains perfect signal integrity, prevents check engine lights, and ensures accurate AFR readings – ideal for tuned K-series, J-series, or H-series builds where sensor placement needs flexibility without splicing factory wiring.
Key Features
- 4-Wire Design: Direct match for wideband or narrowband O2 sensors – preserves full sensor functionality
- Plug-and-Play Connectors: OEM-style male/female connectors for seamless connection to factory harness and sensor
- High-Quality TXL Wire: Automotive-grade, heat-resistant, and flexible for long-term reliability
- Weatherproof Sealing: Sealed connectors resist moisture, corrosion, and road contaminants
- Custom Length Options: 07-12 extension length perfect for header/downpipe or mid-pipe sensor relocation
- Rywire Quality: Hand-built in USA trusted in Honda/Acura performance and swap communities
Specifications
| Specification | Detail |
|---|---|
| Part Number | RY-SUB-4-WIRE-O2-EXT-0712 |
| Wire Count | 4-Wire |
| Length | Application-Specific (07-12 Extension) |
| Wire Type | High-Quality TXL Automotive Wire |
| Compatibility | 2007+ Honda / Acura Models (K-Series, J-Series, H-Series Engines) |
| Installation | Plug-and-Play – No Splicing Required |
| Country of Origin | United States |
| Warranty | Limited Lifetime (Rywire) |
| Shipping Weight | Approx. 0.5-1 lb |
Product Notes
- 4-wire extension ideal for O2 sensor relocation on headers, downpipes, or mid-pipe setups
- Prevents CEL from extended wiring length maintains accurate sensor signal
- Perfect for K-swap projects, custom exhausts, or relocated sensors in 2007+ Honda/Acura vehicles
Installation Notes
- Estimated time: 10-30 minutes, very easy difficulty, no tools required
- Disconnect factory O2 sensor, plug extension into harness and sensor secure wiring away from heat sources
- Professional installation optional inspect for proper connection and no CEL after install
This Part Fits
| Year | Make | Model | Notes |
|---|---|---|---|
| 2007+ | Honda / Acura | Various Models | 2007+ K-Series, J-Series, H-Series Engines (Civic Si, RSX, TSX, Accord, Integra, etc.) |
| Common | Honda/Acura | K-Swap, Custom Exhaust, Header/Downpipe Builds | Any 4-Wire O2 Sensor Relocation |
Why Choose Rywire 4-Wire O2 Extension Harness?
- Plug-and-play OEM connectors with high-quality TXL wire no splicing, no signal loss
- Weatherproof and heat-resistant reliable for engine bay or undercarriage routing
- Limited lifetime warranty trusted wiring solution for Honda/Acura performance builds
Frequently Asked Questions
- Q: Will this extension fit my 2008 Honda Civic Si K20?
A: Yes, Rywire RY-SUB-4-WIRE-O2-EXT-0712 fits 2007+ Honda/Acura models with 4-wire O2 sensors. - Q: Does it maintain sensor accuracy?
A: Yes, high-quality wire and connectors preserve signal integrity no CEL from extension. - Q: Is it waterproof?
A: Yes, sealed connectors resist moisture and corrosion in engine bay or undercarriage. - Q: What is the warranty?
A: Covered by Rywire Limited Lifetime Warranty built for performance.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure retail packaging
- Weight: Approx. 0.5-1 lb
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