| 1980 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1981 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1982 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1983 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1984 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1985 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1986 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1987 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1988 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1989 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1990 | Chevrolet | C50 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1990 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1989 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1987 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1988 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1981 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1982 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1980 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1983 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1984 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1985 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1986 | Chevrolet | C60 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1987 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1988 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1989 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1990 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1981 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1982 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1980 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1983 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1984 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1985 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |
| 1986 | Chevrolet | C70 | | Left hand, front of rear for 3 inch wide springs. Standard Frame, 18,500 - 23,000 lbs. single axles. |