Weld Fitting M12 x 1.5 - Small Thread Water Temp Aluminum

Overview

Precision-machined aluminium weld fitting designed for mounting small-thread M12 x 1.5 water temperature sensors directly into your cooling system. Essential for accurate coolant monitoring in performance builds where factory sensor locations won't cut it or you're running aftermarket radiators, tanks, or custom cooling setups.

Technical Specifications

• Part Number: HT-010330
• Thread: M12 x 1.5 (small thread)
• Material: 6061-T6 Aluminium
• Application: Water temperature sensor mounting
• Weight: 190g

Why You Need This

When building serious power or converting to standalone EFI, accurate water temperature monitoring becomes critical for both performance and protection. Factory sensor locations often interfere with turbo piping, intercooler routing, or simply aren't in the optimal position for your Haltech ECU to make informed decisions about timing, fuelling, and fan control. This becomes especially problematic in engine swaps — that LS into an S-chassis, RB25 into a Silvia, or 2JZ conversion where you're fabricating custom cooling systems.

This aluminium weld fitting solves the placement problem by allowing you to position your water temp sensor exactly where you need it in the cooling circuit. Unlike brass fittings that can corrode or steal fittings that create potential leak points, this purpose-built aluminium fitting welds cleanly into tanks, pipes, or manifolds. Common applications include custom radiator tanks, surge tanks, thermostat housings, or intake manifold coolant galleries. The M12 x 1.5 small thread matches most aftermarket water temp sensors, including those commonly paired with Haltech ECUs.

ECU & System Compatibility

Compatible with water temperature sensors used across the full Haltech Elite and Nexus range, including Elite 550/750/1000/1500/2000/2500 and Nexus R3/R5 systems. The M12 x 1.5 thread specification matches standard aftermarket water temp sensors commonly specified in Haltech installations.

What's in the Box

• 1x Haltech M12 x 1.5 Aluminium Weld Fitting

Complete Your Build

Most customers fitting custom water temp sensors also need the matching temperature sensor and appropriate wiring. Our technical team can recommend the correct water temp sensor for your specific Haltech ECU and advise on optimal placement for your application. We maintain UK stock of the complete Haltech sensor range with same-day despatch for in-stock items, plus we're always available for pre-sales technical advice to ensure you get the right components first time.