The 18853 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: Counterclockwise (CCW) Vehicle Compatibility: - Makes: Aprilia (2006-2007) - Models include: Aprilia SR 50 R Factory; Aprilia RS 50 - Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 18853, 286808, 31200-GE1-712, 37001, 71-26-18853, RS41253, SM10-221. 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.