Thanks to Eric (Diseasel300), I received a 16" aux fan from his wrecked 86 300SDL after a conversation we had at the 14th MB meet in Centerville a few weeks ago about ways to improve the A/C performance in my 81 300SD. We thought it would be an easy swap of my 12" aux fan for the 16" aux fan and that the horn mount would only have to be shifted to new holes that are already there on the 81-84 W126s. But, it looks like the 85-89 W126s used a different horn mount to accommodate the 16" aux fan. To those of you who have done this upgrade before, is the horn mount swap required?

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.