Yes, alternator loosened all the way, belt sitting in grooves, tried every pulley last. Measured the old belt and the new belt. The Old is 111 1/4 inches long. New belt is 111 inches long. The old belt is hard to get on, but I can just get it on. I need every bit of that 1/4 inch.

I measured to old belt and the new belt. The old belt is 111 1/4 inches. The new belt, Quick Sliver part# is 57-865615Q01, is 111 inches. When I research it on the web, and the retailer lists the length, they list it as 2830mm which is 111.4 inches. This should be longer than what I have, but it's shorter!!

Stupid question, don't get mad at me, but I have to ask. Did you back the nut off on the back side of the alt adjuster bolt? You can see it in your picture.

This is beyond ridiculous. I just went though two sierra belts trying to pry them on. The merc belts are the same way. I went to napa, they do not have belts by the lenght! A 5 minute job is taking me all week every night and I ruined 3 belts and probably my alternator pulleys!! CRAZY!! I'm seriously loosing it now.

how many ribs and approximate length?

6 ribs (which means it has 5 recesses) , 13/16 wide, when I measure the belt that barely fits, it's 111 1/4 inches. The belt I got from napa said it was 111 7/8 inches and that was not long enough.

Using Dayco site, and would figure you need at least 2 inches longer, up to maybe 4 (would depend on how long the ALT adjustment bolt is, divide by 2)

506 = belt with 6 ribs and is .82 wide
next 4 numbers is length

5061123 = 112.25 inch
5061130 = 113 inch
5061134 = 113.385 inch
5061143 = 114.25 inch

There is also a Gates site but if you find it at Dayco it can be crossed, just search the part number

http://www.daycoproducts.com/online-...114&num_ribs=6

First Thank you!! Does it matter what the profile is on the ribs? The list you showed me shows a "w" profile. Is that okay. Mine are just round or square.

Guess I cannot answer that question. All the pulleys and belts on my boat and trucks use the W profile. Can look at the pulleys and they are V shaped notches/ribs. I looked up your pulleys but there are no images along with part numbers

Should be able to go to NAPA or other and give them a dayco number and if they have it then compare

Your pulley looks like mine


https://cimg6.ibsrv.net/gimg/www.off...44d1634c51.jpg