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How to Read FoMoCo Part Numbers

Ford part numbers (other than hardware parts) are coded in two basic ways:

bulletRegular parts have a four character prefix (LFLL), a four or five digit part number, and a one-letter suffix.

Example: C5ZZ-5255-F (Exhaust "turn-down" tailpipe on '65-66 289 4V Non-GT Mustangs)

 

bulletMany 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. A three-letter suffix may be used, usually to indicate color.

Example: C6ZZ-6504290-BAB (Instrument Panel, 1966 Mustang, Black)

Hardware parts (fasteners, clamps, grommets, plugs, fittings and similar items) are numbered under two different systems:

bulletStandard parts have five-digit numbers (20000-99999) or low-range six-digit numbers (300000-309999) followed by a "-Sxxx" suffix to designate finish.

Example: 45534-S8 (Grade 2 hex bolt, 3/8-16, 9/15" across flats, 1.00" threaded, 3.00" long, medium silver zinc plate)

 

bulletSpecial parts use six digit part numbers (350000-399999) followed by a "-Sxxx" finish suffix.

Example: 378641-S13 (Allen-type screw, 8-32, 35/64" overall, 19/64" threaded w/nylon pellet, chrome finish)

Yet another numbering system is used for Ford Special Service Tools:

bulletFord tools carry a four character prefix, four or five digit basic part application number, and a one to three letter suffix.

Example: T65P-18805-A (Radio Tester, All 1964-66 Car)

bulletTools formerly sold by MANZEL-BUFFALO carry a prefix of "TOOL", but otherwise follow generally the same format:

Example: TOOL-18918-A (Radio Antenna Nut Wrench)

bulletLastly, a few former MANZEL Air Conditioning tools retained their "ACM-57-f" or "ACL-53-f" MANZEL part number, with a suffix of "TOOL", or a three-letter designator ending in "TL":

Example: ACM-57-2-TOOL (Universal Halide Leak Detector)

Note: Part numbers (used for ordering and inventory purposes, and marked on parts boxes, tags and labels) should not be confused with engineering or casting numbers (normally stamped on or cast in the part for identification during the manufacturing process). They are not interchangeable -- however all follow the same general rules, so these charts may be used to provide approximate interpretations of all types of these markings.

The following tables attempt to further elaborate on the coding of the various portions:

 

Ford Part Numbers (other than hardware and tool)

Prefix

Decade

Year

Model

Design Engineering Office

A = 1940's (often
omitted)
B = 1950's
C = 1960's
D = 1970's
E = 1980's
F = 1990's


























































 

Last digit of year
of introduction
or revision































































 

A = Ford (Generic) / Galaxie
B = Bronco (1970-73)
       Maverick (1975-77)
       Fairmont (1978-83)
C = Remanufactured Parts (1966-75)
       Elite (1975)
       Capri (1979-up)
D = Falcon (1960-69)
       Maverick (1970-74)
       Granada (1975-82)
       LTD (1983-up)
E = Truck (Cab over Engine) (1970-73)
       Pinto (1976-80)
       Escort (1981-up)
F = Foreign / Trans Am Racing
G = Comet (1961-67)
       Montego (1968-76)
       EXP (1982-up)
H = Holman/Moody HiPo Part
       Heavy Truck (1966-82)
       Medium Heavy Truck (1983-up)
J = Industrial
K = Edsel (1958-60)
       Tilt Cab (1970-73)
       Comet (1975-77)
       Zephyr (1978-83)
       Marquis (1983-up)
L = Lincoln
M = Mercury
N = Tractor
O = Fairlane
       Torino (1969-76)
       LTD II (1977-79)
       LN7 (1982-83)
P = Autolite (Later Motorcraft)
R = Rotunda (Generic)(1962-69)
       Ford of Europe (1970-up)
       Remanufactured Parts (1976?-up)
S = Thunderbird
T = Truck (1958-65)
       Light/Medium Truck (1966-82)
       Bronco (1966-82, Except 1970-73)
       Light Truck & Bronco I (1983-up)
U = Econoline/Club Wagon Van
V = Lincoln
W = Cougar (1967-80)
       XR7 (1981-82)
       Cougar (1983-up)
X = Truck (Short Highway) (1970-73)
Y = Meteor (Canada) (1962-72)
       Bobcat (1975-80)
       Lynx (1981-up)
Z = Mustang
2 = Pinto (1972-75)
3 = Tempo (1984-up)
4 = Comet (1971-74)
       Monarch (1975-80)
       Cougar (1981-82)
       Marquis (1983-up)
5 = Recreation Vehicles (1974-75)
       Continental (1982-up)
6 = Pantera (1971-75)
       Topaz (1984-up)
7 = Courier (1971-82)
       Ranger/Bronco II (1983-up); Explorer (1991-up)
8 = Capri (U.S. Parts) (1972-75)
9 = Turbine Engine Parts (1970-75)

A = Light Truck Engineering Division
B = Body and Electrical Product Division
C = Chassis
D = Overseas Product Engineering
E = Engine
F = General Parts/Electrical and Electronics Division
H = Climate Control (1972-up)
J = Autolite/Ford Parts & Service Division
L = Industrial Engine Parts & Service
M = Performance/Special Vehicle Operations (Incl Holman Moody)
N = Tractor Parts
P = Auto Transmission
R = Manual Transmission
S = Light & Heavy Truck Special Order Parts
T = Heavy Truck Engineering
U = Special Vehicle Operations
W = Axle and Driveshaft
X = Emissions, Economy and Special Vehicle Engineering (Muscle Car Parts)
Y = Lincoln/Mercury Service Parts
Z = Ford Service Parts

Note: For 1940's parts ("A") the first character is sometimes omitted. Similarly, the final character is occasionally dropped from the prefix at the whim of the Ford Parts Number creators. Thus, such items as "Ford Rubber Cement" may appear with a part number of "8A-19552-B", rather than "A8AZ-19552-B"

Regular Parts

Basic Part Number

Suffix

1000-1250 = Wheels, hubs and drums
1350-1499 = Spare wheel carrier
2001-2285 = Brakes (service)
2307-2438 = Brakes (power)
2442-2482 = Brake controls
2505-2900 = Brakes (parking)
3000-3359 = Front suspension and steering linkage
3500-3764 = Steering gear
4000-4296 = Rear axle
4600-4859 = Drive shaft
5000-5176 = Frame
5200-5299 = Muffler & exhaust pipe
5300-5499 = front spring and stabilizer
5550-5832 = Rear spring
6000-6898 = Engine
6905-6968 = Transmission overdrive and engine steady rest
7000-7997 = Transmission (Automatic or Manual) and Clutch
8000-8499 = Radiator and grille
8500-8689 = Water pump and fan
9002-9296 = Fuel tank and supercharger
9301-9420 = Fuel Pump
9421-9499 = Manifolds, clamps, etc.
9500-9599 = Carburetor and supercharger
9600-9699 = Air cleaner
9700-9999 = Accelerator and choke control rods
10000-10449 = Generator and Alternator
10500-10653 = Voltage regulator
10654-10756 = Battery
10838-10990 = Instruments
11000-11382 = Starter motor
11450-11688 = Lighting and ignition switch
12000-12390 = Ignition coil, distributor, condenser
12402-12425 = Spark plugs
13002-13248 = Lamps (head and parking)
13402-13796 = Lamps (rear)
13809-13853 = Lamps (license & pillar) & horn
14197-14689 = Wiring
15000-15858 = Miscellaneous accessories
16000-16550 = Front fender
16600-16999 = Hood
17005-17125 = Tools
17248-17383 = Speedometer & tachometer
17402-17666 = Windshield wiper & washer
17700-17730 = Mirror
17736-17999 = Bumper
18000-18125 = Shock absorber
18148-18249 = Comfort-Convenience Accessories
18250-18699 = Heater
18800 = Radio & Antenna
18900 = Speakers and radio accessories
19000 = Gasoline
19100 = Fire Extinguishers
19500-19585 = Custom Accessories; Appearance and maintenance materials
19600-19980 = Air Conditioner

Single letter indicates specific application.

Note: Subassembly parts or accessory kits may add an additional letter (starting with "A", then "B", and so on) following the Thousands digit in the part number identifier. Thus, we have a Mustang automatic transmission shift lever with part number "C5ZZ-7213-M", while the accompanying selector dial for a center-console equipped Mustang would be "C5ZZ-7A213-D".

Body, Interior & Trim Parts

Body Type

Body Group

Change

25 = Luggage Rack
50 = Mercury
53 = Lincoln
54 = 4-Door
57 = Ford
60 = Ford
62 = 2-Door Sedan/Coupe
63 = 2-Door Hardtop (Mustang Fastback)
65 = 2-Door Hardtop (Mustang)
66 = Ranchero
71 = Wagon
76 = Convertible
81 = Truck
83 = Truck
87 = Truck
89 = E100
91-99 = Bronco

00000-09999 = Front End Group:
  01000 = Instrument Panel Area (Lower)
  02000 = Windlace
  03000 = Windshield
  04000 = Instrument Panel (Upper) and Visor Area
  06000 = Glove Compartment
10000-19999 = Floor Group
  10000-12000 = Floor (Exterior)
  13000 = Floor (Interior)
20000-39999 = Side Assembly Group
  20000-27600 = Doors
  27700-30000 = Quarter Panel/Quarter Window
40000-49999 = Back Group
  (Rear Window, Trunk & Rear Valence)
50000-59999 = Top and Roof Group
60000-69999 = Seat Group

Single letter indicates specific application.

Three-letter code usually indicates color.

Note: As above, subassembly parts or accessory kits may add an additional letter, in this case following the Hundreds digit of the part number identifier. Thus the 1966 Rotunda Headrest Kit (Black) features Ford part number "C6AZ-62612A18-A"

Hardware and Utility Parts

Part Number

-

Finish

Finish Suffix

20000-24999 = Bolts
25000-31999 = Machine Screws
33000-34699 = Nuts
34700-34974 = Lock Washers
34975-34999 = Nuts
35000-39499 = Machine Screws
39500-40599 = Thread Formers
40600-41999 = Thread Cutters
42000-42639 = Tapping Screws
42640-42909 = Machine Screws
42910-43239 = Bolts
43240-43599 = Machine Screws
44700-44999 = Washers
45000-45199 = Spring Nuts
45200-45299 = Stamped Nuts
45300-45399 = Nuts
45600-49999 = Bolts
50000-51049 = Machine Screws
51050-53799 = Thread Cutters
53800-55665 = Machine Screws
55666-55859 = Nuts
55960-56099 = Tapping Screws
56100-56499 = Bolts
56900-56999 = Tapping Screws
57000-57999 = Machine Screws
58000-59999 = Bolts
60000-69999 = Rivets
72000-72199 = Cotter Pins
72200-72300 = Grooved Pins
72900-73399 = Straight Pins
73700-73799 = Taper Pins
73800-74099 = Clevis Pins
74100-74199 = Expansion Plugs
74200-74299 = Retaining Spring Clips
76000-76999 = Clevis Pins
87000-87999 = Fittings
87000-87199 = O-Rings
88350-88999 = Studs
89000-91999 = Set Screws
92000-92099 = Tapping Screws
93000-93999 = Studs
95000-95499 = Snap Studs and Snap Items
95500-95999 = Nylon Straps
97000-97199 = Clevis Pins
97200-97399 = Clamps
97400-97799 = Snap Rings
300000-300499 = Machine Screws
300500-301379 = Bolts
301380-302314 = Machine Screws
302315-305999 = Bolts
306000-306499 = Machine Screws
350000-399999 = Special Parts*

S = Plain
S2 = Raven (Phosphate & Oil)
S3 = Black Japan
S4 = Raven (Phosphate & Oil) and black paint
S5 = Copper plate
S6 = Nickel Plate
S7 = Cadmium plate
S8 = Zinc plate
S7-8 = Cadmium-Zinc
S9 = Zinc plate (Bright)
S10 = Tinned
S11 = Copper Coat
S12 = Lacquer to match trim
S13 = Chrome plated (Interior Parts)
S14 = Nickel plate - Butler finish
S15 = Black Oxidized
S16 = Lead plate
S18 = Case hardened
S20 = Cement Coat
S21 = Lacquer for identification
S23 = Rustless (Stainless) steel - head polished
S26 = Cadmium or zinc plate and enamel
S27 = Screw blank
S28 = Sterile coating
Following finishes offer additional corrosion resistance:
S32 = Black paint or zinc chromate primer
S34 = Case hardened cadmium finish
S35 = Zinc coat
S36 = Zinc plate and Dichromate
S37 = Chrome plated (Exterior Parts)
S38 = Raven finish
S39 = Cadmium plate
S40 = Zinc plate
S41 = Pre-galvainized coat
S42 = Cadmium plate (Black)
S43 = Zinc plate plus O.D. Chromate
S45 = Chrome plate on Stainless
S46 = Black Phenolic
S47 = Chromium plate
S48 = Cadmium/Tin plate
S49 = Black Epoxy
S50 = Cadmium plate & Blue Chromate
S51 = Cadmium plate & Blue Chromate
S91 = O-Ring material
S92 = O-Ring material
S93 = O-Ring material
S94 = O-Ring material
S100 = Special
S101 = Special
S102 = Special
S103 = Special
S104 = Special

B = Black dye
M = Non-electrolytic plating (Mechanically applied)
X = Wax sealer (used to finish screw threads)

 

* Special Parts were assigned one-up numbers starting in 1944, and thus defy easy categorization.
     For the definitive book on 1955-73 Ford Hardware identification, order the AMK Products Guide to Ford Fasteners, which covers more than 10,000 items in a far more readable fashion than Ford's own randomly organized Standard and Utility Parts Catalogs.
     Max Kotlowski's guide also provides photos of each fastener and correct markings, painfully detailed descriptions of every available finish, re-finishing instructions for most common finishes and all the measurements you'd need to purchase over-the counter replacement fasteners. Many exact, correctly-marked replacements are also available from AMK, either individually or as part of their wide array of fastener kits.

Ford Special Service Tools

TOOL

YEAR

APPLICATION

-

BASIC NUMBER

-

DESIGN SUFFIX

T

Last two digits of year of introduction

B = Thunderbird
E = Econoline
F = Fairlane
K = Falcon (and Econoline)
L= Cars & Trucks
N = Lincoln
P = Car (All, including Thunderbird)
Q = Quick Service
S = Special Usage
T = Trucks

Basic Number of Part or Assembly to which tool applies (See "Part Identifier" lists above)

One to three letters indicating specific application

These tables are by no means all-inclusive, and I would gladly welcome your comments or corrections.