Quote:
Originally Posted by WVZR-1
10257254 GM NLA but Gates 19743 is likely still available. You might see if a local can change either to Dayco or Goodyear. Amazon should be good for the 19743. The Amazon image doesn't display the larger ID on the short leg so I'd maybe be skeptical and try local but it's a competitive change.
This might be a harder find but does display the larger diameter on the short leg, Continental Elite 64304. Amazon even shows a single of this available. Actually all Goodyear product could be possibly rebranded as Continental Elite including even the "Gatorback" belt product line.

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Hi: There are several sources including WalMart for that Gates 19743 but none show larger end diameter on the "J".
The Continental ELite 64304 does show the larger diameter end and just have to make sure it is the right diameter.
Amazon has just one left in stock (as you suggest) and all others are out of stock....I think I will try Amazon as it "appears" correct but diameter is not listed.
I will let you know if it fits.......lots better than conglomeration (spliced with 90 deg nipple) I have on bench just in case with flared end.
I tried local GM Dealer and was told that part number no longer exists and he brought up the picture on his screen showing the part.
They all were very impressed seeing the ZR-1 however
I was going to lay some rubber on their concrete parking lot so they can say it was a ZR-1 if anyone asked but thought better of that.....kind of like some posts I would like to leave on the Forum but some do not have my sense of humor
Thank you.....you just know stuff no one else knows 
You are right up their with my local JD Parts guy who knows some parts numbers by memory.