ToyotaPartsDeal.com offers the wholesale prices for genuine 1988 Toyota 4Runner parts. Parts like Manifold Air Injection System are shipped directly from authorized Toyota dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.4L, 6 Cyl 3.0L. Trim: DLX, SDT, SR5, SR5 Turbo, STD.