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1955-66 2-Speed Rear Vacuum Shift Diaphragm #1613012 10/10/2026 8:54 PM
Joined: Mar 2004 Posts: 6,233 Silver Spring, MD M Mike B 'Bolter
Mike B 'Bolter M Joined: Mar 2004 Posts: 6,233 Silver Spring, MD	Selling my 2-speed vacuum shift diaphragm #3847058 (Bendix 374451) that fits 1955-66 (and maybe more years) Chev/GMC 15000 lb axles. $25.00 with free shipping in lower 48 States. Mike B Attachments PXL_20261009_150411225.jpg (67.32 KB, 26 downloads) Mike Boteler 1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD

Re: 1955-66 2-Speed Rear Vacuum Shift Diaphragm Mike B #1613037 10/11/2026 1:30 AM
Joined: Sep 2009 Posts: 5,981 Grandview, Missouri Gdads51 Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT
Gdads51 Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT Joined: Sep 2009 Posts: 5,981 Grandview, Missouri	To add to Mike's application info, diaphragm GM# 3847058 shows in Chevy Master Parts Books as fitting all the way back to 1946 vacuum shifted 2 speed axles, as well as up through 1974 Chevy and GMC Models with the 15,000 lb T150 axle. Hope this info might help find it a new Stovebolt home. ~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) \| 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) \| Com Fac Maint Lead Tech Retired (1998-2021)

Re: 1955-66 2-Speed Rear Vacuum Shift Diaphragm Mike B #1613067 10/11/2026 6:33 PM
Joined: Mar 2004 Posts: 6,233 Silver Spring, MD M Mike B 'Bolter
Mike B 'Bolter M Joined: Mar 2004 Posts: 6,233 Silver Spring, MD	Thanks Dan! Mike B Mike Boteler 1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD

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