The 5903 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 - Pinion teeth: 10 - Rotation: Counterclockwise (CCW) Vehicle Compatibility: - Makes: Mercury - Models include: Mercury 2.0L Racing - Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 18-6824, 50-60594A, 50-60594A1, 50-60594T01, 5384, 5708N, 5903. 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.