ToyotaPartsDeal.com offers the wholesale prices for genuine 2013 Toyota Tundra parts. Parts like Planetary Gear, Reverse Piston & Counter Gear(ATM) are shipped directly from authorized Toyota dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.0L, 8 Cyl 4.6L, 8 Cyl 5.7L. Trim: Limited, Platinum, SR5.