I am carrying a spare belt that I bought at Florida
Bearings, a general engineering supplier.
I gave him the numbers on the belt, and he answered that as Gates belts agents, they would not sell me the belt as it was made for Raymarine
only and I should go to them. Their price
I phoned back and got a different rep, I described the belt, its length, the TPI (teeth per inch) the width the duty etc. He called back in 15 minutes and told me they could get it slit for me off the tube, but I would have to pay first. I went in, paid the $8.75 and two days later it arrived. Perfect fit.