ETKA is ambiguous and since they went from microfiche (which the listings
were 99.99% correct) to the electronic format (which has consistently had
errors in all it's versions), one has had to learn to "read between the
lines" and go from personal experience.

1.9's had screw-in sensors thru 85.  2.1's have slip-in sensors held in by a
clip.

1.9 Screw In Sensors:
025-906-041 A = Single Pin Temp Sensor for ECU (Blue) (Bosch 0280130026)
049-919-501 = Single Pin Temp Sensor for Gauge

2.1 Slip In Sensors:
025-906-041 A = 2 Pin Temp Sensor for ECU (Blue)(Non Bosch), 86-91
251-919-501 = 2 Pin Temp Sensor for Gauge (Black), 86-87
251-919-501 D = 2 Pin Temp Sensor for Gauge (Green/Black), 88-91
  (NOTE:  Formerly 251-919-501 A)
The 501A/D will replace the 501 PLAIN if the connector is changed as well.

Temp Sensors 101 is now dismissed for the holiday ;-)
--
Jim Thompson
84 Westfalia 2.1 "Ole Putt"
73 K Ghia Coupe "Denise"
72 411 Station Wagon "Pug"
oldvolkshome@gmail.com
http://www.oldvolkshome.com
*Have a Happy & SAFE Holiday*
**********************************
On 12/22/06, Kevin Mulligan <mulligan_kevin@yahoo.com> wrote:
>
> ETKA is ambiguous in this regard, as it shows the following:
>
> - Thermal switch (aka Temp 2 gauge), two part numbers: 251 919 369 and 025
> 906 041A. The 369 part has a "Qty" of X, and the 041A part has a Qty of 1.
> Anyone know: does X mean the part has been superceded?
>
> - Temp sensor for coolant temp gauge: 251 919 501 (black, Qty X) and 251
> 919 501D (green/black, Qty 1).
>
> This page might be helpful for you, as it has pix of all these parts:
>
> <<http://www.busdepot.com/view.jsp?
> model=44&category=13&group=84&prodgroup=657>>
>
> - Kevin