Description
The FiTech O2 Sensor Extension Sub Harness Replacement (70050-7) is designed to enhance the functionality of FiTech Ultimate LS EFI fuel injection systems. This harness serves to replace a damaged oxygen sensor harness or extend the existing wiring. It also facilitates the installation of a second O2 sensor, which is beneficial for achieving more precise engine tuning.
KEY FEATURES AND BENEFITS:
- Engineered Compatibility: Specifically designed for FiTech Ultimate LS EFI systems to ensure proper fit and function.
- Repair and Extension: Allows users to repair existing oxygen sensor setups or extend wiring for better configuration.
- Enhanced Tuning: The ability to add a second O2 sensor provides finer control over the engine’s fuel mixture.
- Improved Diagnostic Capabilities: Contributes to better engine performance monitoring and diagnostics.
SPECIFICATIONS:
- Part Number: 70050-7
- Compatibility: FiTech Ultimate LS EFI Systems
- Wiring: 4-wire configuration
- Connectors: 4-flat female and 4-flat male
- Quantity: Sold individually
HOW TO USE:
- Disconnect Power: Ensure the vehicle’s power is disconnected to prevent electrical damage.
- Locate Existing Harness: Identify the current O2 sensor harness.
- Remove Old Harness: If replacing, carefully disconnect the existing harness from the O2 sensor and the EFI system.
- Connect New Harness: Attach the appropriate end of the FiTech 70050-7 harness to the O2 sensor.
- Connect to EFI System: Connect the other end of the harness to the designated port on the FiTech EFI system.
- Extend Harness: If adding, connect the male and female ends of the harness to the existing O2 harness and then to the new O2 sensor.
- Secure Connections: Ensure that all connections are secure and properly seated.
- Restore Power: Reconnect the vehicle’s power.
- Test Functionality: Start the engine and verify the O2 sensor’s functionality through the FiTech system’s diagnostics.
BENEFITS OF USING FITECH O2 SENSOR EXTENSION SUB HARNESS REPLACEMENT (70050-7):
- Restored Functionality: Ensures proper O2 sensor operation, which is essential for optimal engine performance and fuel efficiency.
- Detailed Feedback: Adding a second O2 sensor offers more comprehensive data to the EFI system for accurate fuel adjustments.
- Simplified Installation: Functions as a direct-fit replacement or extension, making installation quick and straightforward.
FEATURES:
- Dual Functionality: Serves as both a replacement and an extension for existing wiring.
- Additional O2 Sensor Capability: Facilitates the addition of a second O2 sensor for enhanced tuning options.
- 4-Wire Setup: Features a reliable 4-wire configuration for optimal connectivity.
- Quality Connectors: Includes 4-flat male and female connectors for secure connections.
- Designed for Performance: Tailored specifically for FiTech Ultimate LS EFI systems to maintain accuracy in air/fuel ratio readings.





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