. . We
currently have two versions of this part. They vary by
the diameter of the hole for the bolt that goes through
the alternator "ear(s)". The 117-09 has a 10mm hole; the
117-15 has an 8mm (approx 5/16") hole. The other two bolt
holes are 8mm on both brackets. Thickness is the same on
both brackets.
Datsun
Roadster Alternator Parts from Rallye Enterprises, Ltd.
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Datsun
SPL311 SRL311 Alternator Support from Rallye
Roadster