LS cylinder heads are machined with metric M12-1.5 coolant sensor ports,This adapter allows you to keep your original sensors and integrate them into your swapped LS engine. I would suggest measuring the length of your sensor before purchasing this adapter
Adapter has a female 3/8" NPT port, 1.7" deep. Refer to thread chart to check your correct fitting size.
This will thread into the driver side of the cylinder head near the front or the passenger side cylinder head near the rear
Engineering Made Simple：Solve swap headaches instantly Forget complicated workarounds. This adapter ensures your GM LS series engine runs smoothly with Spal temp sensors, electric relay fan kits, or mechanical gauges. Say goodbye to clearance issues and hello to stress-free installation
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