C3 LS5 .. part number help

[Dale P.]

can anyone tell me what the correct temperature sending unit part number is .. I can not find that number anywhere ...... this is for my 71 LS5 454 with gages

[Joe L.]

Re: C3 LS5 .. part number help

Dale-----

The ORIGINAL temp sender was GM #6400759. This sender had a pin-type terminal. It was discontinued over 25 years ago and is difficult to locate. It was replaced for SERVICE by the 63-67 button terminal unit, GM #1513321. The latter part was also used for 72-78. GM #1513321 was discontinued several years ago and replaced by GM #12334869 which has been reported to produce inaccurate temp readings with original Corvette gauges.

[Dale P.]

thanks Joe .. now I understand the bad readings *NM*