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205782 -Lower inner repair kit for 51-53K at least, and as far as I know 54's as well.(no 54 parts book)208597 - Right (high pitch) horn for 51-53K and likely 54212340 -upper inner pivot kit for HJ205780 is not called out for 51-55K so would assume it's older series
The Autolite IGS-4211 was used on 1947-48 Kaiser. The 1949-51s used an Autolite IGS-4214 which had a different angles for the centrifugal and vacuum advance but physically, they're the same.Part number 208591 is "Front suspension upper arm inner-pivot" repair kit for a 1951 Kaiser and likely all following years ('52-'55) but I can't be sure on that.