Plug and Pins Only - Suit Flex Fuel Composition Sensor

Overview

The Haltech flex fuel composition sensor connector plug delivers the critical electrical interface between your ethanol content sensor and ECU wiring harness. Essential for any E85 or flex fuel build, this genuine Haltech connector ensures reliable communication of fuel composition data to your Elite or Nexus ECU for accurate tune adjustments across different ethanol blends.

Technical Specifications

• Part Number: HT-011001
• Application: Flex fuel composition sensor connector
• Contents: Plug body and terminals only
• Wiring: Customer supplied (allows custom harness integration)
• Compatibility: Haltech flex fuel composition sensors

Why You Need This

Flex fuel systems rely on precise ethanol content measurement to deliver the correct fuel maps and ignition timing as you switch between pump petrol and E85. The composition sensor feeds this vital data to your Haltech ECU, but only with proper electrical connection. Bodged connections using generic connectors create voltage drops, intermittent signals, and false readings that can lean out your tune dangerously or trigger limp modes.

This genuine Haltech connector plug ensures OEM-grade connection reliability in demanding underbonnet environments. We see too many builds where corner-cutting on the sensor connection causes weeks of frustrating tune issues. Whether you're building a flex fuel LS swap, adding E85 capability to a modified RB25DET, or converting a road-going 2JZ to run multiple fuel types, the sensor connection is not the place to compromise. The plug-and-pins format allows professional integration into custom engine harnesses or retrofit installations where you're splicing into existing wiring.

ECU & System Compatibility

Compatible with all Haltech ECUs supporting flex fuel functionality, including Elite 550, Elite 750, Elite 1000, Elite 1500, Elite 2000, Elite 2500, and Nexus R3 and R5 systems. Designed specifically for use with Haltech flex fuel composition sensors in both OEM replacement and aftermarket flex fuel conversions.

What's in the Box

• Haltech flex fuel sensor connector plug
• Terminal pins for sensor connection

Complete Your Build

Most customers building flex fuel systems also require the actual flex fuel composition sensor, additional wiring for harness integration, and often upgrade to larger injectors to handle E85's increased flow requirements. Our technical team can recommend the complete flex fuel package for your specific application and help size the supporting fuel system components correctly. With UK stock and expert pre-sales advice, Billy's Speed Shop ensures your flex fuel conversion delivers reliable performance from day one.