This leaf helper spring is designed to match the fit and function of the original spring on specified vehicles, and is engineered for durability and reliable performance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet C30 Pickup: 1973, 1974] - [Chevrolet C30: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet K30 Pickup: 1973, 1974] - [Chevrolet K30: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet R30: 1987, 1988] - [Chevrolet R3500: 1989, 1990, 1991] - [Chevrolet V30: 1987, 1988] - [Chevrolet V3500: 1989, 1990, 1991] - [GMC C35/C3500 Pickup: 1973, 1974] - [GMC C35: 1975, 1976, 1977, 1978] - [GMC C3500: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1988] - [GMC K35/K3500 Pickup: 1972, 1973, 1974] - [GMC K35: 1977, 1978] - [GMC K3500: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [GMC R3500: 1987, 1988, 1989, 1990, 1991] - [GMC V3500: 1987, 1988, 1989, 1990, 1991]