Topic: Fomoco parts, left/right part number post fix

[roddster]

Thats the question.  Seems I have two NOS left reverse lights for the 67 GTA I bought last year.  So, I am looking for the right side one.  Would that end in an "A" or is it "B"?   Fomoco boo booed:  The box numbers are labeled A for one side and B for the other.
 A future "trade for" post will be comming.......

[Twilight65]

On a 67 the RH would be C7ZZ-15511-A for before 4/8/68 and C7ZZ-15511-B for after 4/8/68, C7ZZ-15512-B is for the LH side. I don't know what changed on the RH side on 4/8/68.
Dave

[CharlesTurner]

Thats the question.  Seems I have two NOS left reverse lights for the 67 GTA I bought last year.  So, I am looking for the right side one.  Would that end in an "A" or is it "B"?   Fomoco boo booed:  The box numbers are labeled A for one side and B for the other.
 A future "trade for" post will be comming.......

If you're asking if left/right parts are differentiated by a part number suffix, then the answer is generally no.  They will carry a part number with a basic number difference as mentioned in the other post....  RH 15511 basic number, LH 15512 basic number for back-up lights.

[Oz390]

Just a bit more info on the topic of part numbers.

"In general" the RH is an even, and lower number to the LH.  There are exceptions to this rule.

The -"x" suffix just notes the engineering level. A part with "-B" would indicate some change to the original desing of the part, but its still the same part (backup light, retooled or modified screw hole, for example; goes from -A to -B)

A minor addition to some is a prefix of 63, 65, or 76 to the part, noting the bodystyle it applies to.  So a 6529732 is a coupe rear 1/4 weatherstrip, and a 6329732 is the same part for a fastback.  In this example the 65 is also used on the convertible so the prefix is not always matched to the bodystyle (mostly coupe designed parts on a convertible)

[jwc66k]

To further expand on Ford's use of part's numbering; engineering part numbers may or may not have a suffix, the first design/option was blank, the second variation was a "-B"; service part numbers usually have a suffix even if there is only one version, "-A". Ford, from an engineering standpoint, had a workable system for designing, part production and assembly line use although it was occasionally not followed. We, at Ford Aerospace, referred to the parent company's practices as - "creative part number engineering", they did almost what ever they wanted to do. Service part numbers were more formal and "controlled" better.
Jim