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Three OIL sender (original + temp + press)


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I run a VDO sender that transmits oil pressure to a gauge AND runs the OE dash warning lamp. I pull the oil temp with a drain plug sensor which is really where you want it.


Andre B.

1971 BMW 2002

Wanna-be racer, too stiff for the street...

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VDO makes an adapter for their dual oil pressure sender (gauge and warning light) that is similar to the Parker Performance one that you picture, but with only one threaded opening.  


Truth be told, that location atop the head isn't the best location for an oil temp sender.  By the time oil gets up there, it's cooled off considerably from its starting point in the sump or oil pump.  If you don't have a tii and your car is a 71 or newer, examine the oil filter housing carefully and you'll notice a dimple cast or machined into the housing.  On a tii, this is drilled and tapped for the oil line that lubricates the injection pump.  On carbureted cars, it's just a dimple.  You can remove the filter housing, then drill and tap the dimple for your oil temp sender.  It then measures the oil temperature as it's coming out of the oil pump/filter.  And it's a lot less vulnerable to damage than a sender in the drain plug.  



'69 Nevada sunroof-Wolfgang-bought new
'73 Sahara sunroof-Ludwig-since '78
'91 Brillantrot 318is sunroof-Georg Friederich 
Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette) & Kermit, the Bugeye Sprite

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Yeah, I use that VDO adapter for pressure. And I know the temp sensor runs slightly cooler.  No biggie.  So I guess i'm doing it wrong -- but haven't had any issue with the drain-plug oil temp sensor location in over 18 years (but then again I'm not off-roading). :P

Edited by visionaut

I'll drive...    ;-)

  v i s i o n a u t i k s.com    Fantastic Voyage - 2002s on the Red Planet

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Sender in the drain plug reads somewhat cool, but works.  It's messy to change the oil.


Sender welded into a boss in the pan reads somewhat cool too, but works.  The extended bulb sender DID make a difference.


Sender in the filter adaptor reads higher, but susceptable to heat soak from the block.  Also works.


Sender in the external oil lines to the remote filter also works- tends to read pretty accurately at full chat,

as AN hose is, apparently, a pretty good insulator.


Sender at the back of the head is useless, as there's no flow back there.

Unless you're oiling your turbo from it, and even then, it's not typical,

since it may have heat from the head and valve train added.  Or cooling, depending...


Sender in the diff is good- there's a flat spot to face, drill and tap that works pretty well


Sender in the trans is pointless- the trans simply doesn't overheat.  It tends to follow coolant,

just as a sender at the back of the head would do...


Sender in the CV joints has not been tried.








"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

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I just finished putting a set of gauges in my '72 2002tii.  I used the VDO gauges and the adapter from VDO for the oil pressure.  The senders and gauges for oil T and P from Bavairan Autosport.  Here are the part numbers I used:


oil pressure sender - 360 023

right angle adapter - 240 043K

oil pressure gauge - 350 108

oil temp gauge - 310 106


Hope that helps




Dave A.

'72 2002Tii

'74 Alfa Spider


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I installed the oil temperature sender in the oil drain plug.  I found a VDO sender with 1/8" NPT and tapped a hole in a new drain plug.  I've only driven a couple times since installing them, but I can see that the oil temp is much lower than the water temp.  At least for the trips I've done so far.


The VDO oil pressure sender has two terminals.  One is for the oil warning light in the dash.  Just connect the original wire to this terminal.  The second terminal transmits the pressure signal to the new gauge.  You have to run a new wire for this.


The water temperature sender was mounted next to the stock sender.  This required taping a new hole in the little water manifold at the front of the engine.  We pulled the manifold off to do this.  The advantage of this approach is you can keep the stock sender and dash functionality while still getting very accurate temp readings on the new gauge.



Dave A.

'72 2002Tii

'74 Alfa Spider


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