compatible vinyl glazing bead

I am afraid we don't offer many replacement parts for Marvin windows. However, you should be able to use our 15-104 friction shoe. As for the remainder of the hardware, see if our 55-156 snap in glazing bead along with our 20-016 tilt pin would make good replacements. These are the closest matches we have. Carefully compare your measurements and hardware to ours to see if you think any of these pieces could work for you.