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Shipping is calculated by size and weight in the check out section when you enter your address. Shipping starts from approx $13.50 and is in addition to the product prices shown.

We ship once a week or depending on the workload in our custom car fabrication workshop it might be once every two weeks these days. We are a small operation building cars as well as selling parts. Car builds take priority over parts.

NPT Plug 3/8 inch pressure plug Mild Steel Black - Perfect for Oil galleries in engine block 3/8" NPTF thread

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National Pipe Taper - NPTF Tapered thread pressure plug

Product Description

Part# KB-NPTF-MS-38 ; 3/8" NPTF national pipe taper thread pressure plug.

The tread is tappered so as you srew them in it binds against the standard tap thread in the block to form a pressure seal. Usually installed with plumbers thread tape wrapped around the thread of the plug to help it seal.

Make sure you check your sizes required in your engine before you order. They do vary in size.  You may have to retap your block depending on thread type, these are not so easy to source in different thread sizes.

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