Water Temp Gauge

Discussion in 'Gauge Marks' started by earnhardtgm3, Nov 9, 2013.

  1. earnhardtgm3

    earnhardtgm3 Veteran Member

    Dec 18, 2007
    Camaro Country,GA
    Hey Daniel
    Can you tell which water temp sender is the best to use for factory gauges?
    The ones that have the 1/2" threads(Factory) won't fit with a lot of new aluminum heads such as my AFR'.s.After doing some searching I found these to be close,but still don't work unless factory gauge is bad.How can you test the factory water temp gauge.Threads needs to be 3/8"
    GM #25037346 (ACDelco #213-80) from my dealer.
    It's a single pin 3/8 thread sensor that has almost the same resistance as our old sensors.
    There is a whole list of models it fits originally from the 80's to early 90's. So whether you want a GM one or aftermarket, you can ask for a sensor for an 86 IROC 305 TPI, 90-92 Astro, A 91 ZR1 Corvette.
    TSU-64 is no longer, at least by that part number because Autozone's TU66 cross references to both GP Sorenson TSU64 and AC Delco 213-80
    TS26471 made by Niehoff
    GM #25037346 (ACDelco #213-80)
    Last edited: Nov 9, 2013
  2. daddio4048

    daddio4048 Veteran Member

    Jan 21, 2013
    Echlin by NAPA usually pretty good.
  3. 81z284speed

    81z284speed New Member

    Sep 9, 2014
    I had same problem, I got a BWD wt359 sensor (works w 79-81 w gauge) at advance auto parts, and got a thermostat housing with a threaded hold port and screwed it into that. If your car is 78 or below you need a different sender...btw the sender I listed is 3/8 thread..I got the water outlet at napa...

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