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3 wire coolant temp sensor...difference???

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Old Aug 9, 2010 | 10:48 PM
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Default 3 wire coolant temp sensor...difference???
is there a functional difference between the v6's vs. 98 ls1???

is there another vehicle/motor that uses the 12551708 temp sensor?
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Old Aug 10, 2010 | 08:47 AM
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i believe they are the same if they have the 3 wires
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Old Aug 10, 2010 | 12:20 PM
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hmmm..cuz there is big price difference between them....
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Old Aug 10, 2010 | 05:19 PM
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Originally Posted by Yellowbrother
hmmm..cuz there is big price difference between them....
$2.62 is a big differance?
98 with a 5.7 uses ECH TS5721 $20.46
98 with a 3.8 uses ECH TS4020 $17.84
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Old Aug 10, 2010 | 05:22 PM
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Originally Posted by Yellowbrother
is there a functional difference between the v6's vs. 98 ls1???
Define functional differance?
If you mean electricly, I don't think so, but if you mean mechanicly, does having differant threads count?
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Old Aug 10, 2010 | 08:11 PM
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FWIW, I tried to put a 3800 temp sensor in the 5.3L head and the threads were too large. The temp sensor was from a 96 SSEI, and Autozone lists the same part # for the SSEI and a 98 Bird 3800.
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Old Aug 10, 2010 | 08:13 PM
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Originally Posted by poconojoe
$2.62 is a big differance?
98 with a 5.7 uses ECH TS5721 $20.46
98 with a 3.8 uses ECH TS4020 $17.84

what part number are those??? the ones i found for ls1 from auto part stores are 30+ and the v6's are in the teens...big difference when u on a budget...
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Old Aug 10, 2010 | 08:15 PM
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Originally Posted by poconojoe
Define functional differance?
If you mean electricly, I don't think so, but if you mean mechanicly, does having differant threads count?
oh yeah huh...didn't take into account the threading....

functional differences as in...can u take the v6 and plug it into ls1 harness and the third wire to the temp gauge and everything function as if u're using the 98 3-wire temp sensor....but moot question if threading is different...hahahah...
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Old Aug 10, 2010 | 09:37 PM
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The plug end and wiring is the same. The differance is the thread size.
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Old Aug 10, 2010 | 11:14 PM
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**** mine was $20 at the stealership..
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Old Aug 10, 2010 | 11:31 PM
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Originally Posted by the_merv
**** mine was $20 at the stealership..
oh really??? hmmm...i didnt check the dealership assuming they were more then the autoparts store...
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Old Aug 10, 2010 | 11:37 PM
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This was a few years ago..maybe they went up.
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Old Aug 11, 2010 | 12:10 AM
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Originally Posted by Yellowbrother
what part number are those??? the ones i found for ls1 from auto part stores are 30+ and the v6's are in the teens...big difference when u on a budget...
Echlin, NAPA sells it
The list price for a 12551708 is $29 and some change, so net should be a little over $21 at the dealer
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