Oil Pressure Sedning Unit Generic Replacement

[burgermeister]

The Porsche VDO pressure sender is disgustingly pricey and not readily available due to the odd thread size. You can buy the same sending unit (0-5 bar) with a different thread for <$30 at various places online (eguages.com for one).

So I took mine, cut the can off, carefully ground the remaining nut flat, and drilled & tapped it for an M10x1.0. They sell 1/8 NPT senders also, but I had the M10 tap sitting around, and I like the sealing washer concept.

I did have to change the electrical connector to a screw eye.

I'm actually surprised Wayne doesn't sell the aftermarket units and a bushing as an option.

At any rate, it works fine, and I have an extra low pressure contact that I won't use. For some reason, the sender with the low pressure contact was cheaper than the one for just the guage.

[ivangene]

creative

[wildcat077]

Think Wayne sells two different models.
I ordered the OEM unit at $78.00 dollars for my 89 911 and Pelican also sells a
cheaper "non OEM" unit for something like $45.00 dollars.

Funny thing is my oil pressure gauge was pegged out at 4000 rpms as of last week and my car just got back from a three day DE and the stupid gauge is working now ... go figure ...

New sender unit is on the way from Pelican but i will change it regardless !
As Ed says,pretty ingenious fix indeed

Cheers !
Phil

[DUK]

Very ingenious.

My .02--- If at sometime you have the line off, have someone tig weld the fitting into the line. One less chance for a leak.

[burgermeister]

I have a non-OEM sender (URO, add umlaut to the U), and it keeps making the pressure guage fluctuate wildly between 4 and 5 bar when the engine gets hot ... and it's less than 1 year old.

[KTL]

Nice job Frank. Very smart idea to make a coupler out of the old sender base.