Drive Axles, Bearings and Joints: Application and ID

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).

















Axle Codes
The following lists the gear ratios on rear axles.
^ 31 - 3.73 non-limited slip, F-250/Excursion
^ C1 - 3.73 limited slip, F-250/Excursion
^ 32 - 4.10 non-limited slip, F-250
^ C2 - 4.10 limited slip, F-250/Excursion
^ 33 - 4.30 non-limited slip, F-250
^ C3 - 4.30 limited slip, F-250/Excursion
^ 36 - 4.56 non-limited slip, F-250
^ C6 - 4.56 limited slip, F-250
^ 41 - 3.73 non-limited slip, F-350 (single rear wheels)
^ D1 - 3.73 limited slip, F-350 (single rear wheels)
^ 42 - 4.10 non-limited slip, F-350 (single rear wheels)
^ D2 - 4.10 limited slip, F-350 (single rear wheels)
^ 43 - 4.30 non-limited slip, F-350 (single rear wheels)
^ D3 - 4.30 limited slip, F-350 (single rear wheels)
^ 46 - 4.56 non-limited slip, F-350 (single rear wheels)
^ D6 - 4.56 limited slip, F-350 (single rear wheels)
^ 61 - 3.73 non-limited slip, F-350 (dual rear wheels)
^ F1 - 3.73 limited slip, F-350 (dual rear wheels)
^ 62 - 4.10 non-limited slip, F-350 (dual rear wheels)
^ F2 - 4.10 limited slip, F-350 (dual rear wheels)
^ 63 - 4.30 non-limited slip, F-350 (dual rear wheels)
^ F3 - 4.30 limited slip, F-350 (dual rear wheels)
^ 66 - 4.56 non-limited slip, F- 350 (dual rear wheels)
^ F6 - 4.56 limited slip, F-350 (dual rear wheels)
^ 81 - 3.73 non-limited slip, F- 350 chassis cab, narrow frame (dual rear wheels)
^ E1 - 3.73 limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ 82 - 4.10 non-limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ E2 - 4.10 limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ 83 - 4.30 non-limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ E3 - 4.30 limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ 86 - 4.56 non-limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ E6 - 4.56 limited slip, F- 350 chassis cab, narrow frame (dual rear wheels)
^ 88 - 4.88 non-limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ EW - 4.88 limited slip, F-350 chassis cab, narrow frame (dual rear wheels)
^ 78 - 4.88 non-limited slip, F-450 chassis cab
^ G8 - 4.88 limited slip, F-450 chassis cab
^ 75 - 5.38 non-limited slip, F-450 chassis cab
^ G5 - 5.38 limited slip, F-450 chassis cab
^ GW - 4.10 limited slip, F-450 chassis cab
^ 98 - 4.88 non-limited slip, F-550 chassis cab
^ K8 - 4.88 limited slip, F-550 chassis cab
^ 95 - 5.38 non-limited slip, F-550 chassis cab
^ K5 - 5.38 limited slip, F-550 chassis cab
^ KW - 4.10 limited slip, F-550 chassis cab
^ 75 - Dana 80 (11,000 pounds GVWR), F53 recreational stripped chassis (motorhome)
^ 95 - Dana 135 (13,500 pounds GVWR), F53 recreational stripped chassis (motorhome)