Yup, this is it for my 98,
https://shop.advanceautoparts.com/p/carquest-premium-ambient-air-temperature-sensor-wta1144/12471761-P?utm_medium=ymme
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98 Riviera SC3800 All stock except gutted air box.
1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ
Best MPH, 116.06 MPH, Best ET, 11.54
https://www.youtube.com/watch?v=UHCda-t_Jls
https://www.youtube.com/watch?v=sfT2tEO4XcU