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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 $9.50 and is in addition to the product prices shown.

We ship once a week or more depending on the workload in our custom car fabrication workshop. We are a small operation building cars as well as selling parts. Car builds take priority, we usually ship parts mid week and end of week.

NPT Plug 3/8 inch pressure plug Polished Stainless Steel - 3/8" NPT thread - Inlet Manifolds and Water Pumps

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National Pipe Taper - NPT Tapered thread pressure plug - BSP plug fitting - inlet manifold plug or water pump block off

Product Description

Part# KB-NPT-SS-38 ; Stainless Steel 3/8" NPT national pipe taper thread pressure plug. Polished to Kustom Bitz Standard finish that gets right down into the hex socket slot in the pipe plug. These look excellent and will not rust or discolour, the perfect finishing touch for the fussy.

Typical inlet manifold thread for the vaccum fitting or some temperature senders.

Typically also found on some brands of water pumps and water necks.

The thread is tappered so as you screw 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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TRADE & DEALER inquiries welcome
All our bolt kits are available for resale. We can tailor & package a bolt kit in Polished Stainless or high tensile steel to your requirements in small or large quantities.
#1 Bulk stocker & supplier to the trade, & retail outlets, of AussieSpeed Products


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