The Sierra Marine STARTER is a premium heavy-duty inboard starter motor with clockwise rotation compatible with Mercury 40-50 hp 1997-up 4-stroke engines. It complies with all quality assurance and accuracy testing criteria to ensure you receive the highest efficiency performance, dependability, and reliability. Due to the high-quality material composition, excellent resistance to wear and tear, and unique design ensuring service efficiency, it has an exceptional build that can withstand and last longer in a harsh marine environment. Key Features: High standards of engineering and quality materials Delivers a lengthy lifespan through high-quality design Ensures appropriate performance It is substitutable with Arco 5362, Mallory 9-15019, and Mercury Marine 50-834749, 50-859171T, 50-898265001 A high-quality OEM product will last longer and provide tenacious and dependable service. Before being packed, everything meets or exceeds the marine-grade OEM requirements. Specifications: SKU: 18-6436 UPC: 808282188139 Weight: 6.01 LBS Teeth: 9 Voltage: 12 V Rotation: Clockwise Unit Of Measure: EA Brand: SeaStar Solutions Condition: New Mercury 45-50 FourStroke