The 18340 is a 12v permanent-magnet direct-drive starter, a new aftermarket direct replacement engineered to match the fit, form, and function of the original starter. Specifications: - Series: PMDD - Voltage: 12V - Rotation: Clockwise (CW) Vehicle Compatibility: - Makes: Yamaha (1985-2008) - Models include: Yamaha YFM100 Moto; Yamaha YFM100 Champ; Yamaha YFM80W Raptor; Yamaha YFM80 Badger; Yamaha YFM50 Raptor; Yamaha YFM80 Grizzly - Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 128000-1990, 128000-4850, 128000-4851, 128000-4852, 128000-4853, 128000-4853, 128000-4854, 18340, 55X-81800-50-00, 55X-81800-51-00 (plus 5 more on file). Why ePartsGlobal: specialist in heavy-duty starters, alternators, and charging-system electrical parts. Backed by a 1-year warranty, free shipping on orders over $19.95, and fast fulfillment. Ships from USA.