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GlowShift’s 1/8-27 NPT Female to 3/8-18 NPT Male Thread Adapter is perfect for installing any 1/8-27 NPT thread sensor or fitting to a 3/8-18 NPT port. This thread adapter is ideal for any sensor used for oil pressure, fuel pressure, air pressure or nitrous pressure gauges by converting the 1/8-27 NPT thread to the proper size needed for your application. Manufactured from high quality brass, this thread adapter is built to last. GlowShift includes free lifetime technical support and a one year limited warranty with each purchase.