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I got mine from Stoddard.
443 971 850 A
Identical fastener to the ones on our cars, many of which are about 13.5 cm in length such as in the engine bay area. The ones from Stoddard are about 7 cm long which is more than enough
Just an update to correct my tape measuring error (wasn't wearing my glasses):
The originals I was replacing in the engine bay are about 23 cm long end to end (9"), and the replacements from Stoddard are 17 cm (6.75")
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