Crossposting from our sponsor section which may not reach everyone. We had these machined for our EFR oil/water line kits, but we're making them available separately for folks building a DIY/MKTurbo/etc. setup. It's machined from zinc-plated steel, tons of cross-sectional area around the male fitting side for added strength, and as short as possible to keep the weight of the oil pressure sensor as close to the fitting as possible while still allowing for easy line installation. 1/8" BSPT male/female on the run, 1/8"NPT on the bull.

There are a few of these in various forms on the market, but nothing we were perfectly happy with. Some stuff was too long, some too expensive, some too thin around the male run. This is what a perfect version of this fitting looks like.

Machined in the USA, $25 shipped anywhere in the USA. Add $2 for a steel -3AN (journal bearing) or -4AN (ball bearing) adapter.

Click for product link - Trackspeed Oil Feed Adapter