Mechanical Temperature Gauge Adapters
These adapters are all designed to accept either the 5/8-18 thread found on Auto Meter and Stewart-Warner mechanical temperature gauges, or the 3/8 BSP thread used on Racetech and Smiths gauges.
Note that the 3/8 BSP thread is very close to 5/8-18. The thread pitch for both is 18 threads per inch. 3/8 BSP is slightly larger (0.67" nominal OD) than 5/8-18 (0.625" nominal OD).
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Our Inline Oil Temperature Gauge Adapter provides a convenient location for installing the sensor bulb from a mechanical temperature gauge.
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