1955 model 13 trucks with 5-speed trans 5.14 RA Ratio 7 or 7.5 x16 tires Many other applications

13 teeth Many applications from M-Series to 8E with 4-speed

Most 1941-64 trucks with 4-speed 15 tooth gear

14 teeth M5 Trucks with 4-speed less OD 4.85 RA ratio 6.50-16 tire size Many M15-M16 trucls less OD with 4-speed 5.14 or 5.83 RA ratio.

16 teeth M15A M16 Trucks with 4-speed standard RA with 5.83 ratio M16 Trucks with 4-speed trans 2-speed rear end 6.03 ratio

Multiple M-Series applications except 3-speed trans get RA ratio before calling

17 teeth Numerous 1953-55 applications check RA ratio before ordering

1954-55 V-8 cars with 4.27 RA ratio 3-speed or OD trans

20 tooth 1951-55 Commanders with 3-speed or OD 4.55 RA ratio 1956 Golden Hawk all 1957 V-8 with OD 4.55 RA ratio

18 teeth 1951-54 Commanders with standard or OD 4.09 RA ratio 1955 V-8 with standard or OD with 4.55 or 4.56 RA ratio 1956-57 V-8 with T85 standard or OD trans 4.09 RA ratio

1950 Commander with AD 3.54 axle ratio E-12 truck with AD 4.11 axle ratio other applications

18 Teeth 1947-48 Champions with 456 RA ratio 1950-54 Champions with 488 RA ratio OD Some M5 trucks