300E 1986 Fuel Injector Holder PN

[azurite300E]

Anybody know the OE part number of the metal clamp that is used to hold down the injector seals in a W124 1986 300E 103 engine? I know the style was changed in later models, not sure what year. Mine has 5 clamps of one style, and one that is different. Please see pics for more details.

Right now I've got five older (original) style seal holders, and one newer style holder. I know the newer style was not meant to be used for the seals used in my injectors because the seal where that newer holder was installed had obvious signs of uneven pressure points on the contact surfaces between the two.