What type of fitting is this?

[Nasty Wendy]

This is the brass block that my oil pressure sending unit goes into. The fitting that I'm asking about is an 'extra' spot that I had plugged. I need to use it now and I need to know what the hell it is so that I can buy the right adapter to use a 1/4 NPT fitting. It is larger than 1/8 NPT and smaller than 1/4 NPT and has that restrictive smaller opening.

 

[Nasty Wendy]

3/8 - 24 inverted flare????

 

[TurboDave]

turbo oil supply line go there?

 

[pacecarta]

its for the turbo oil feed line (1/4inv flare tube) , just put the plug back ,
remove whatever is in the other port and use a 1/4" npt street tee (or a standard tee and a short nipple )and add your new stuff there

or you could remove that oil block from the block and screw in a 1/4" npt street tee and then youd have two 1/4npt ports to work from

 

[TR Custom Parts]

This is the plug I use to block that port off when using my Turbo Protector kit.

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Edelmann - Inverted Flared Fitting
Part Number: 120400
Line: EDE

• 1 year limited warranty
• UPC: 21597600206
• Solid Plug - 1/4 Inch Tube (7/16-24 Male Thread)
• Diameter (In): 1/4 Inch

Detailed Description
Solid Plug - 1/4" Tube (7/16-24 Male Thread)

 

[Nasty Wendy]

Wow thanks for the responses. I'm surprised that I had forgotten that it is the original spot for the turbo oil supply. I put the PTE turbo saver on a LONG time ago and never looked back. I simply forgot this is where it came from originally. Anyway I need to either use this port or do like Pacecarta suggested and use a street T. I need two usable ports. Thanks.

 

[Nasty Wendy]

...or you could remove that oil block from the block and screw in a 1/4" npt street tee and then youd have two 1/4npt ports to work from

Did this. Thanks for the tip. I had to put a 45º in to swing the T away from the block some so that it could be tightened.