found $1 substitute for Westach temperature sender
 

$1 substitute:
Digi-Key - BC2419-ND (Manufacturer - NTCLE100E3332GB0)

for this:
http://www.westach.com/products/ACCE...DERS/index.php

I use it for oil temps.

I broke mine when pulling my engine. I simply had it glued to the back of my oil pan with thermal epoxy, then insulated with silicone sealant over it. The sub should work by soldering wire to it, dipping it in varnish, and shrink wrapping it before gluing.