Description
When you’re running a precision cooling system, a reliable water temperature sensor adapter is non-negotiable. This Joe’s water temperature plug bridges the gap between your engine block and aftermarket gauges or data logging systems, giving you real-time coolant temperature monitoring. The 5/8-18 to 1/8 NPT conversion ensures compatibility with standard sensor fittings across most high-performance and race applications.
Built from black anodized aluminum, this adapter combines lightweight construction with corrosion resistance—critical for durability in demanding engine environments. Installation is straightforward: simply thread it into your existing water passage port, then connect your temperature sender or gauge line.
- Adapter fitting type
- Water temperature sensor plug
- 5/8-18 male to 1/8 NPT female
- Aluminum construction
- Black anodized finish
- Sold individually
- Joe’s part #42730






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