I’ve been looking for the same thing for years and so far have not found one as a separate replacement part. There are outfits that specialize in rebuilding old fuel tank level senders. The couple I’ve inquired with rewind the resistance strip by hand and charge $100+. Our senders are the same standard GM 90 ohm swing-arm potentiometer used on many other GM car models from 1960s to 1990s. Strange it’s not available as replacement part.
Sent from my iPhone using
ZR-1 Net Registry