David your probably going to have to search online to find something like https://h-tune.co.uk/bc-racing-replacement-coilover-adjuster-c-spanners-3-sizes/
Then contact the supplier to find out the actual thickness as none seem to include that.
A lot are sold as ‘coilover’ spring adjusters these days, but have you any idea what the maximum thickness you can fit in is?
BTW I Googled ‘water pump C spanner’ and clicked on ‘images’ to see a lot of variants https://tinyurl.com/y2mr6hlz
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This reply was modified 7 years, 5 months ago by David Faulkner. Reason: Added link