That is the correct sensor for the gaugeNo, it's not. Autozone part #TU108 clearly states that it is a coolant temperature "switch." That's for use with idiot lights. The listing also has a "related parts" area that includes "Coolant temperature sensor"http://www.autozone.com/engine-management/temperature-switch?filterByKeyWord=TU108&fromString=search&isSearchByPartNumber=trueProblem is, if you click the link to the related "coolant temperature sensor," it shows one with a pigtail and it says it fits the thermostat housing. That's not the correct part for a Renix, that would be for an HO. In other words, Autozone (as usual) doesn't have a clue.This one, from Advance, looks to be the right one:http://shop.advanceautoparts.com/p/bwd-engine-coolant-temperature-sender-wt761/5973805-P
If you cross TU108 and WT761 they are the exact same, just different manufacturers. They both cross to Napa 6053 which is the one I used and was previously mentioned by Dom. So yes TU108 will work