I just replaced my PB4-60 Motor about 2 months ago. Then my Polaris-380 crapped out and I said to heck with the whole thing, And bought a Dolphin S-200. The motor was pretty cheap, $100 I think. And about another $20-$30 in O-rings and seals. Rebuild took a couple of hours, but that included re-plumbing the pump with solid PVC to replace the hoses whose fittings had also crapped out. If you lived closer, I'd offer to sell it to you, but shipping would probably be cost prohibitive.