![]() Note that “outside sales (code F), “Motorcraft Brand” (code P), or imported parts from Ford of Europe (code R) are identified with their product line code in the third position. The 3rd character of the prefix indicates the product part the part was originally designed for, with few exceptions. The 2nd character of the indicates the year within the decade, “C5” would be 1965, “F4” would be 1994. The 1st character of the prefix indicates the decade of design, starting with “A” for the 1940’s, B for the 1950’s, C for the 1960’s. ![]() The four-digit alphanumeric prefix tells the year the part was released for production, the vehicle line the part was originally released for and by what Ford engineering division (chassis, engine, body, etc.) or in the case of a service parts, the Ford car division the part is for – Ford or Lincoln-Mercury. A three-letter suffix may be used, usually to indicate color.Įxample: C6ZZ-6504290-BAB (Instrument Panel, 1966 Mustang, Black) The Prefix: Many body-style specific sheet metal, body, interior and trim parts use seven digits in the part number, the first two of which identify the basic body type application, with the last five (“Body Group”) identifying the specific part within a general body area. Regular parts have a four character prefix (LFLL), a four or five digit part number, and a one-letter suffix.Įxample: C5ZZ-5255-F (Exhaust “turn-down” tailpipe on ’65-66 289 4V Non-GT Mustangs) Parts that have later suffix codes are the ones to get.įord part numbers (other than hardware parts) are coded in two basic ways: If the part you were looking to replace (your existing part) had a “B” suffix, a part with the “A” suffix would probably have a compatibility issue. If the suffix on the part you were looking to replace (your existing part) was an “A” you could use parts with have a “B” suffix. Early suffix designations generally begin with “A” and increment through the alphabet as design changes are made that affect interchangeability. You know if the basic number is the same it should be compatible if the suffix number on the part you are comparing is a later alpha character than the existing one. You can use these numbers at swap meets or salvage yards to match to existing numbers you might have. An example would be F4ZZ (prefix), 6E086 (basic part number), -A (suffix). Part numbers consist of a prefix, a basic part number, and a suffix. The difference being the fourth character of the prefix. Engineering and Service numbers decode the same way. ![]() There are some exceptions, such as a whole grouping of parts or a kit. Therefore, the part numbers on the part are generally Engineering numbers while the Service part number will be on the box. ![]() The Service part number will not change with the Engineering part number unless the change affects interchangeability. However, you may need it because the engineering number is the one appearing on many parts.) This allows Ford Parts and Service to track changes affecting interchangeability by modifying the Ford Service part number. He doesn’t want to know about the engineering part number. (It’s the number used by your Ford parts man to look for your order. It is a different number, because how a part is finished and packaged for service is different from its original production counterpart. When the part is released for service it is assigned a Service part number. When the part is redesigned, the change needs to be noted so the Engineering part number is changed. The engineers will design a part and assign it an Engineering part number, which is an alphanumeric reference code used by the assembly plants. Ford part numbers are divided into two main categories: Engineering Numbers and Service Numbers.
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