Thanks Max Mitchell and everyone else, but I'm slow when it comes to some vehicle terms. I found the sticker on my door jab but and under the word axle there was the number 18, and under the letter "R" which i guess stands for rear there was the number 9. Do you know what those numbers mean?

I looked under the rear end and there was a tab and I believe that the gears are 3.08 but there was no peroid between the numbers. It probably doesn't matter but I wanted to run it through the message board first. Also I ran my VIN number and there was no information on rear end gears. Is that normal or what?

thanks for any help.[list] [*]1999 Ford F-150 Supercab XL [*]V6 4.2L [*]Airraid intake /Dynomax SuperTurbo Exhaust

 

You're more than welcome. The rear end information is on the driver's door jamb, under "axle", like you saw. The 18 is a open (non-limited slip) with a 3.08 gear ratio. The rear cover tag can be confusing because it contains other information like the build dates. The limited slip is an option and is not nearly as common as the open. Your rear end type/size is the 8.8"; the larger 9.75" unit comes on the 5.4 trucks.

 

Axle Codes

The following lists the gear ratios on axles.

18 — 3.08, non-limited slip, F-150
19 — 3.55, non-limited slip, F-150, F-250
26 — 3.73, non-limited slip, F-150, F-250
27 — 3.31, non-limited slip, F-150, F-250
28 — 3.73, non-limited slip, F-150, F-250
H9 — 3.55, limited slip, F-150, F-250
B6 — 3.73, limited slip, F-150, F-250

 

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Identification Codes
The vehicle identification number (VIN) is a 17-digit combination of letters and numbers. The VIN is stamped on a metal tab riveted on the instrument panel, top upper left of the dash. The VIN number is also found on the vehicle certification (VC) label.



Item Description
1 World manufacturer identifier
2 Brake type and gross vehicle weight rating (GVWR)
3 Vehicle line, series, body type
4 Engine type
5 Check digit
6 Model year
7 Assembly plant
8 Production sequence number


Vehicle Identification Number


The first three vehicle identification number (VIN) positions are the world manufacturer identifier.

1FT — Ford Motor Company, USA, truck, completed vehicle
2FT — Ford Motor Company, Canada, truck, completed vehicle
3FT — Ford Motor Company, Mexico, truck, completed vehicle

The fourth VIN position is the vehicle brake type and GVW code (all vehicles use hydraulic brakes).

3 — 6,600 pounds, F-250 under 8,500 pounds GVWR
Z — 5,001-6,000 pounds with second generation air bags
R — 6,001-7,000 pounds with second generation air bags
P — 7,001-8,000 pounds with second generation air bags
D — 5,001-6,000 pounds with first generation air bags
E — 6,001-7,000 pounds with first generation air bags
F — 7,001-8,000 pounds with first generation air bags

Positions 5 through 7 indicate vehicle line, series and body type.

F07 — F-150 Regular Cab, 4x2 (Flareside)
F08 — F-150 Regular Cab, 4x4 (Flareside)
F17 — F-150 Regular Cab, 4x2 (Styleside)
F18 — F-150 Regular Cab, 4x4 (Styleside)
F27 — F-250 Regular Cab, 4x2 (Styleside)
F28 — F-250 Regular Cab, 4x4 (Styleside)
X07 — F-150 SuperCab, 4x2 (Flareside)
X08 — F-150 SuperCab, 4x4 (Flareside)
X17 — F-150 SuperCab, 4x2 (Styleside)
X18 — F-150 SuperCab, 4x4 (Styleside)
X27 — F-250 SuperCab, 4x2 (Styleside)
X28 — F-250 SuperCab, 4x4 (Styleside)

The eighth VIN position is the engine displacement and number of cylinders.

2 — 4.2L, OVH, EFI, V6 Gas
W — 4.6L, Modular SOHC, EFI, V8, Gas
M — 5.4L, SOHC, Natural Gas
Z — 5.4L, Bi-Fuel (NGV/Propane)
3 — 5.4L, 2V, SOHC, SFI, V8, Gas
L — 5.4L, 2V, SOHC, EFI, V8, Gas

The ninth VIN position is a check digit.


The tenth VIN position is the model year code.

X — 1999

The eleventh VIN position is the assembly plant code.

L — Michigan Truck (Wayne, Michigan)
S — Allen Park (Allen Park, Michigan)
C — Ontario Truck (Oakville, Ontario)
E — Kentucky Truck (Jefferson County, Kentucky)
K — Kansas City (Claycomo, Missouri)
N — Norfolk (Norfolk, Virginia)
M — Cuautitlan (Cuautitlan, Mexico)

The last six VIN positions are an alphanumeric code for the vehicle build sequence. This is also the vehicle serial and warranty number.

A00000-E99999 — Ford Division
Vehicle Certification (VC) Label



Item Description
1 Exterior paint code
2 Region code
3 Domestic special order code
4 Wheelbase code
5 Brake code
6 Interior trim code
7 Tape/paint pinstripe code
8 Radio code
9 Axle code
10 Transmission code
11 Spring code


The vehicle certification (VC) label contains the manufacturer name, the month and year of manufacture, the certification statement, and the VIN. It also includes gross vehicle weight ratings (GVWR).

Vehicle Certification (VC) Label — Canada (Typical)

Paint Codes

Refer to the paint manufacturer code book for information.

Radio Codes

7 — AM/FM stereo with clock
9 — AM/FM stereo cassette with clock
K — AM/FM stereo cassette with CD player
Y — Delete standard radio with clock
G — Delete radio chassis only, AM/FM stereo, all other components installed (F-Series, Ranger, Econoline)
8 — Electronic, Premium AM/FM stereo cassette
5 — Electronic, Premium AM/FM stereo cassette
Axle Codes

The following lists the gear ratios on axles.

18 — 3.08, non-limited slip, F-150
19 — 3.55, non-limited slip, F-150, F-250
26 — 3.73, non-limited slip, F-150, F-250
27 — 3.31, non-limited slip, F-150, F-250
28 — 3.73, non-limited slip, F-150, F-250
H9 — 3.55, limited slip, F-150, F-250
B6 — 3.73, limited slip, F-150, F-250
Transmission Codes

E — Four-speed automatic overdrive (4R100)
M — Five-speed manual overdrive (Mazda M5R2-C)
U — Four-speed automatic (AODE-W/4R70W)
7 — Four-speed automatic (NAAO 4R100)
Spring Codes

The following lists available spring codes.

Front Springs

Base part number — 5310 (RH/LH)
Torsion Bars

Base part number — 5B326 (RH)
Base part number — 5B327 (LH)
Load Leveling Suspension

P
Rear Springs

Base part number — 5560
Interior Trim Codes

The following lists the interior trim and interior color codes.

Interior Trim

V — Vinyl bench
C — Cloth bench
F — Cloth captain's chairs with console
M — Cloth 60/40
A — Vinyl full bench
H — Leather captain's chairs with console
E — Leather 40/60
Interior Color Codes

X — Medium Prairie Tan
2 — Medium Graphite
T — Dark Graphite
R — Dark Denim
Tape Stripe Codes

D — Silver Metallic/Medium Platinum Metallic
E — Light Prairie Tan/Medium Palomino (XL and XLT)
G — Deep Crystal Blue/Light Portofino (XL and XLT)
H — Silver Metallic/Deep Crystal Blue (XL and XLT)
J — Light Prairie Tan/Medium Palomino (XL and XLT)
K — Deep Crystal Blue/Gold Metallic (XL and XLT)
L — Deep Crystal Blue (upper), Medium Dark Woodrose (lower), Lariat
M — Jewel Green/Gold Metallic (upper and lower) Lariat
N — Toreador/Gold Metallic (upper and lower) Lariat
B — Blue Sport (STX Package)
X — Tapestripes deleted