IB853347201 wrote:
Did the same thing! lost my oil cap on my W20, 8.1. Stopped in at Westfall GMC Truck, Inc. parts department in Kansas City, MO, (816) 455-7262. Purchased a new one, no problem. was like $14. Part # for 8.1 workhorse oil filler cap is ACDelco 12574265 / ACD# FC210 and Winnebago W8800701.
Well I've tried 3 so far and no go. Is the #12574265 and FC 210 the same. I'm going to Chevy now. You might have known it was special.
The Dorman 42315 was a no go. Mine has a smaller neck than I've been able to fine.
CharWan