Fan belt size
 

I would like to know the correct size of the Model A fan belt. We are using the original generator and water pump pulleys. They are in all the Model A parts catalogs but the shipping doubles the cost of the belt.
Thanks

Re: Fan belt size
 

Bx40

Re: Fan belt size
 

Ditto B 40

Re: Fan belt size
 

After looking up B 40 fan belts on eBay, it appears the belt is 43" in diameter. It is strange the B 40 would be 43", verses 40" like the name. Is the correct belt 43"?
Rusty Nelson

Re: Fan belt size
 

That sounds weird! One time, when I was too far from another supply, I used a B43 to get me out of trouble. It was as close as I could get. To tension it, the generator was so far out to the left that the belt touched the rubber part lower water outlet near the radiator. I laid a piece of aluminium under the hose clip to prevent it wearing through and replaced the belt some 4,000 miles later.

Re: Fan belt size
 

D&D PowerDrive B40 NAPA AUTOMOTIVE Replacement Belt https://www.amazon.com/dp/B00NUQE4I0..._eQP0Ab9R5MV51


This is the belt I got from amazon. It works fine for me. It’s been on for a few years.

Re: Fan belt size
 

The "X" in the part number I mentioned above (post #2) is a cogged belt. The 43" that Rusty referred to in post #4 is the Outside diameter. I suspect that the "40" refers to the inside diameter, although I don't have one handy to measure to verify that.

Re: Fan belt size
 

Add things to your parts order, and buy from a dealer so you get the correct belt. The belt angle needs to be correct as well as the width and length. The belt I bought from Bratton's in the 90's for my 28 still looks like new.

Re: Fan belt size
 

The Napa one doesn’t fit very well. I and several othe people have had trouble with it.
The ones I have ordered from Snyders fit perfect.

Re: Fan belt size
 

What about B fan belts. Are they the same as the A?

Manuel in Oz

Re: Fan belt size
 

Nope - http://www.biedlers-belts.com/single...r-ii-belt.html

B Fan belt size?
 

The chart doesn't show makes & models BP. What diameter/size is the B belt?

Manuel in Oz

Re: Fan belt size
 

To be SAFE, get the one it calls for & one slightly shorter & one slightly longer! It's a LOOOOOONG walk to PEP BOYS!
Bill Tired

Re: Fan belt size
 

A and B belts are the same size and, the same as used for 1940's era Chevrolets.

Re: Fan belt size
 

Thanks Ursus. Never knew that....

Manuel in Oz