I can tell you on my 65 I have had two boosters and two master cylinders in 10 months. It is interesting to see that each year the boosters were reduced to one number for a replacement, i.e. Here's the rundown on '65-'66 boosters by the numbers in the OSI catalog: I have to dig through other catalogs for engineering numbers and to determine which are the Midland and which are the Bendix versions.Ĭ5SZ 2005-A, r/b CSSZ 2005-C, r/b C5SZ 2005-GĬ5SZ 2005-E, r/b C5SZ 2005-F, r/b C5SZ 2005-G The "Blue Bible" on page 19 shows two listings for '64 boosters:Ĭ4SZ 2005-A/C4SA 2A025-A is a Midland booster and was used before 10/15/63 - description says "includes linkage - less master cylinder"Ĭ4SZ 2005-B/C4SA 2A025-B is also a Midland booster and was used from 10/15/63 - description says that it was a "vertical type - includes linkage - less master cylinder - tagged C-4201-AN". The OSI catalog does not show numbers with a C4SZ prefix, which makes me think it was not replaced/superseded by another booster. The '60-'64 "Blue Bible" on page 19 says that C2SZ 2005-A was used '61-'63 - it's noted that service boosters manufactured from 6/1/65 are identified by number C 4117-D:
Since I happen to have a copy of the June '67 OSI catalog and the July '63 Master Cross-Reference Catalog, I'm going to list numbers for '61-'66 boosters and how they evolved in the parts network (r/b = replaced by, n/r = not replaced) - note that the Parts & Accessories numbers (those that appear in catalogs) end with a Z-suffix while the Engineering number repeats the third character or ends with an A:Ĭ1SZ 2005-A/C1SS 2A025-A (the early Bendix stamped steel version), r/b C2AZ 2005-D/C2AA 2A025-D, r/b C2AZ 2005-G/C2AA 2A025-D, r/b C3AZ 2005-A/C3AA 2A025-AĬ1SZ 2005-B/C1SS 2A025-B (early Bendix version? need more research), r/b C1SZ 2005-C/C1SS 2A025-C, r/b C1SZ 2005-D/C1SS 2A025-D (not sure if this is Bendix stamped steel or Midland cast aluminum - need more info)Ĭ1SZ 2005-E/C1SS 2A025-G - no listing in OSIĬ1SZ 2005-F/C1SS 2A025-K, r/b C1SZ 2005-H/(no eng# listing), r/b C2SZ 2005-A/C2SA 2A025-A & C3SA 2A025-A (this would be the Midland cast-aluminum version)Ĭ1SZ 2005-G/C1SS 2A025-K, r/b C1SZ 2005-F/C1SS 2A025-K, r/b C2SZ 2005-A/C2SA 2A025-A & C3SA 2A025-AĬ1SZ 2005-H/(no eng# listing), r/b C2SZ 2005-A/C2SA 2A025-A & C3SA 2A025-A A search through Master Parts Catalogs, Obsolete-Supersede-Interchange books and related factory-issued catalogs should be able to narrow down when such replacement changes were authorized. replacement boosters, but it would appear to me that at some time in the mid-'60s Ford engineers determined that the Midland and Bendix boosters could be interchanged, thereby simplifying warehousing and stocking by dealers' parts departments. I haven't gotten far enough into my research on factory-installed vs. One thing to take into account is that Ford had some items that were interchangeable by a newer/improved replacement part.
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