Are you sure? I just tried a couple of online dealer lookups and both said not available. When I last looked at these a year ago, they were almost $70 ea. AC Delco still shows an equivalent though, p/n 510-309 or GM long number 12333251, about $19 ea. Difference is the original was 16" extended, the 510-309 is 15.35" extended. I was told the original was a dealer only item, where as the 510-309 can be bought from Delco or dealers.
