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| | | Forums66 Topics128,088 Posts1,056,416 Members48,443 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Apr 2007 Posts: 1,038 'Bolter | | 'Bolter Joined: Apr 2007 Posts: 1,038 | What is the outside diameter of the diaphragm? For my '50 COE I found a diaphragm on Ebay that turned out to be larger than mine, so I wonder if it is the same as yours. For mine, I was able to get the part number and I found one at a Phoenix GMC truck center. They were as shocked as I that it was on the shelf. They surmised that it went on something newer and that is why they had it. I will be at my shop next week and if I have the diameter of your diaphragm, I will check and see if I have the one you have or I can give you the parts number. | | |
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