Our 21 year old MKII came with the Raymarine ST60 series depth, speedo, wind and autopilot. We seem to be reaching the end of life for some of the electronics. I found it increasingly difficult to find replacement parts. Ebay has plenty of used items, but who knows what your actually getting. I came across a European source called "Tradeinn.com"  and an associated business called "waveinn marine products". I needed a P319 depth sounder transducer and ordered from them. It shipped from Spain, was unused, and was delivered in the original Raymarine packaging.  It took several weeks. for shipping.

Next, my fluxgate autopilot compass failed. They didn't have the complete unit in stock but did have the gimbaled electronic core that is the heart of the transducer; Raymarine part number (M022).  It again it took several weeks and was packaged in the original materials; custom cut foam and an ESD bag. The unit was unused. My old compass had extreme wandering issues even after calibration. The new unit holds the heading steady but needs calibration when the boat goes back in the water.

Anyone trying the get a few extra years out of their current Raymarine electronics might want to check out this supplier.