This is a new distributor cap for a BJ7 from #29F-H3563 to BJ8 with Distributors 40920 and 40966. These caps are British manufacture made from polycarbonate so they are much more reliable than original caps, plus they have copper terminals like original. Fits cars with 25D6 distributors so the cap does have a cut out in it. Cross reference # 54412474, GDC101, XD66