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914World.com _ 914World Garage _ Transmission Mount Washer Spec
Posted by: DennisV Aug 14 2026, 07:20 PM
Is there anything special about the washers for the M12 transaxle mounting bolts (i.e., thicker, larger OD)? Part number: 914-375-239-00. #39 in parts catalog diagram.
They appear to be NLA and I can't find a description or photo of them. Washers I have are 13 ID and 27 OD. Normal thickness.
Thank you.
Posted by: Luke M Aug 14 2026, 07:30 PM
Yes, they are special thick washers. Pm Bruce Stone I'm sure he has a few hanging around. 
Posted by: DennisV Aug 14 2026, 07:41 PM
QUOTE(Luke M @ Aug 14 2026, 06:30 PM) 
Yes, they are special thick washers.
Sigh. Thanks. Good to know.
If anyone can share the spec that would be greatly appreciated. I'm going to install the engine tomorrow. I have a bag of thick washers I could potentially modify if I knew the correct thickness and OD.
Posted by: Cairo94507 Aug 19 2026, 08:10 AM
I recall them being about 3/16" thick. Good luck.
Posted by: Flyinlow Aug 19 2026, 05:11 PM
QUOTE(DennisV @ Aug 14 2026, 06:20 PM)
Is there anything special about the washers for the M12 transaxle mounting bolts (i.e., thicker, larger OD)? Part number: 914-375-239-00. #39 in parts catalog diagram.
They appear to be NLA and I can't find a description or photo of them. Washers I have are 13 ID and 27 OD. Normal thickness.
Thank you.
Hi… the washers are 40 mm O.D. 12 mm I.D.and 5mm thick
Posted by: DennisV Aug 20 2026, 08:47 AM
QUOTE(Flyinlow @ Aug 19 2026, 04:11 PM)
QUOTE(DennisV @ Aug 14 2026, 06:20 PM)
Is there anything special about the washers for the M12 transaxle mounting bolts (i.e., thicker, larger OD)? Part number: 914-375-239-00. #39 in parts catalog diagram.
They appear to be NLA and I can't find a description or photo of them. Washers I have are 13 ID and 27 OD. Normal thickness.
Thank you.
Hi… the washers are 40 mm O.D. 12 mm I.D.and 5mm thick
Thank you! I'll add this info to the parts vault.
The one's I made were 41.7 mm OD, drilled to 12.7 ID, and a 4 thick washer. So I'll probably roll with this for the foreseeable future.
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