Temp sending unit

Temp sending unit - 08/27/12 04:29 PM

Hey Gang.
I was curious if anyone has a good part number for a Mopar temperature sending unit (gauge) for our older Mopars. I'm putting together my friend's '71 v-code Challenger R/T and asked him to get an OEM sending unit because the ones I've gotten in the past from the local parts store were never accurate or didn't work properly. I ran into this experience for myself on my former '69 Charger 500, hence wishing to get the OEM product. I got back to me and stated that the only thing a local dealership could come up with was a dual-pin sending unit. I told him our era sending units didn't have any "dual-pin"..

Thanks in advance..
T

Posted By: moparjo68

Re: Temp sending unit - 08/27/12 07:17 PM

I'm guessing you need the temp sender with the single threaded head shaft? Year One has a New Chrysler temp sender that I'm planning on buying when they have their next 30% off sale as their everyday price is 46.99. I had hoped Napa's Echlin temp sender would be of better quality but they were all off, just like all the other aftermarket crap. I would email you the link from Year One but am too dumb. The Year One part number is FD51140.

Posted By: hemi68charger

Re: Temp sending unit - 08/27/12 07:28 PM

Quote:

I'm guessing you need the temp sender with the single threaded head shaft? Year One has a New Chrysler temp sender that I'm planning on buying when they have their next 30% off sale as their everyday price is 46.99. I had hoped Napa's Echlin temp sender would be of better quality but they were all off, just like all the other aftermarket crap. I would email you the link from Year One but am too dumb. The Year One part number is FD51140.

Nope, that's all good.. I can get there and refer it to my friend, he's been ordering stuff from them anyways... Sooo, I'll just have him add this to the mix....

Posted By: John_Kunkel

Re: Temp sending unit - 08/27/12 08:52 PM

Add an "R" to the YO part number and it's only $12...since it's still an FD (Factory Direct) part number I wonder what the difference is.

Posted By: hemi68charger

Re: Temp sending unit - 08/27/12 10:09 PM

Quote:

Add an "R" to the YO part number and it's only $12...since it's still an FD (Factory Direct) part number I wonder what the difference is.

I was hoping someone would have mentioned this, I just didn't know...:)

Posted By: moparjo68

Re: Temp sending unit - 08/27/12 10:41 PM

I saw that as well at the YO site. The caption for the "R" states its aftermarket. So I'm guessing that's the same piece of crap you could buy from any of the auto parts stores.

Posted By: moparfan53

Re: Temp sending unit - 08/28/12 02:08 AM

The 70-71 Chrysler parts book lists the temp sender as part# 2426458. I believe that is superceded to #4051140, which I think is what YO is selling as FD51140 (I have found that sometimes with original Chrysler parts YO replaces the first 2 digits with FD).

You could check with your local dealer regarding the number supercession/availability.

EDIT: Just did a Google search for #4051140 and RT Speciaties shows it changed to #4504202, so you might want to check that number also at your dealer.
http://www.rtspecialties.net/proddetail.asp?prod=4051140

Posted By: wally426ci

Re: Temp sending unit - 08/28/12 12:13 PM

I need one too! I thought it was just my car.

Posted By: autoxcuda

Re: Temp sending unit - 08/28/12 05:55 PM

I heard that Shannon at Redline Gaugeworks says you can add a resistor inline to the aftermarket temp senders to get them to read correctly.

Is anyone sure the current over the counter Mopar Parts temp senders work correctly?? Most of time a parts like that is sourced through and outside vendor.

Posted By: John_Kunkel

Re: Temp sending unit - 08/28/12 08:26 PM

Quote:

I saw that as well at the YO site. The caption for the "R" states its aftermarket. So I'm guessing that's the same piece of crap you could buy from any of the auto parts stores.

That's the logical explanation but if it's aftermarket it shouldn't have a "FD" (Factory Direct) prefix.

Posted By: pacifica

Re: Temp sending unit - 08/29/12 03:44 AM

Quote:

I heard that Shannon at Redline Gaugeworks says you can add a resistor inline to the aftermarket temp senders to get them to read correctly.

I added a 10 ohm resistor to my temp wire as it goes into the harness near the sender [you don't see it as it is only an inch long]. Solder it in and wrap with tape to match.

I used a parts store sender and it read too high [temp]. Tried a couple resistors and the 10 ohm was correct for my guage to be accurate.

Don't forget to verify your actual water temperature when you try different resistors.

Posted By: moparjo68

Re: Temp sending unit - 08/29/12 11:22 PM

Has anyone bought one of the FD51140 sending units NEW FROM CHRYSLER? And the next question would be.........were they more close to being accurate than aftermarket auto part store no name brand???

Posted By: Joesixpack

Re: Temp sending unit - 08/30/12 01:11 PM

I had one of these and sold it .....many of the older nors temp senders look just like it...

Attached picture 7357005-$(KGrHqUOKooE6eMQO,4dBOuY67rob!~~60_12.jpg

Attached picture 7357005-$(KGrHqUOKooE6eMQO,4dBOuY67rob!~~60_12.jpg

Posted By: Joesixpack

Re: Temp sending unit - 08/30/12 01:14 PM

close up

Posted By: Joesixpack

Re: Temp sending unit - 08/30/12 01:17 PM

ehlin&niehoff units were very close

Attached picture 7357010-6902138-IMG_0823.jpg

Posted By: 62maxwgn

Re: Temp sending unit - 08/30/12 07:47 PM

How many do you want ?

Posted By: JohnRR

Re: Temp sending unit - 08/30/12 08:08 PM

Quote:

How many do you want ?

Posted By: hemi68charger

Re: Temp sending unit - 08/31/12 01:51 PM

Quote:

How many do you want ?

Dang Boy !!!

Posted By: gtx6970

Re: Temp sending unit - 08/31/12 04:02 PM

Quote:

How many do you want ?

Oh,,,,I don't know how about ,,,,,
all of them

Posted By: a12superbee

Re: Temp sending unit - 09/01/12 01:59 AM

Just one please.

Posted By: 71birdJ68

Re: Temp sending unit - 09/01/12 02:21 AM

Any for a 71 B body?

Posted By: wally426ci

Re: Temp sending unit - 09/02/12 01:38 AM

Quote:

How many do you want ?

62maxwgn, I PM'd you.