ToyotaPartsDeal.com offers the wholesale prices for genuine 2003 Toyota Tacoma 2 Wheel Drive parts. Parts like Horn 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, 4 Cyl 2.7L, 6 Cyl 3.4L. Trim: DLX.