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Brass 1/8" or 1/4" BSPT pipe plug. This plug will work for plugging BSPT holes in various places on coolant lines and the intake manifold. The BSPT is a little different than regular NPT and is what Datsun used for their pipe threads.
Uses: Coolant line coming off of the thermostat housing, fuel injection intake manifolds have several holes that the 1/4" plug can be used for. The intake manifold uses 1/8" BSPT for some of the vacuum ports. 1/8" BSPT has O.D. of .383".
