Feature: 1. Part Number: Designed to meet original factory specifications, replaces part numbers 47-161541, 47-16154-1; compatible with OEM numbers 345-65021-0, 345-65021-0M, 345650210, 345650210M, 18-8923. 2. Perfect Replacement: Water pump impeller replacement for Nissan Tohatsu Outboard 25/30/35/40 HP and Mariner Outboard 25/30 HP models. 3. High Compatibility: Compatible with Sierra 18-8923, Mallory Marine 9-45400, simplifying water pump repair and maintenance. 4. Rigorous Testing: Flexible impeller undergoes strict quality testing to ensure reliable, efficient, and durable performance. Can be proactively replaced based on engine usage. 5. Easy Installation: Direct replacement for old or damaged impellers; simple to install and helps maintain optimal engine cooling system performance. Specification: Item Type: Water Pump Impeller Color: Black Material: Neoprene and Plastic Hub Number of Blades: 6 Internal / Insert / Hub / Shaft Size: Approx. 0.681 in (1.73 cm) Overall / Outer / External Diameter: Approx. 1.715 in (4.36 cm) Depth / Height / Width / Thickness: Approx. 0.799 in (2.03 cm) Part Number: 47-161541, 47-16154-1 Replace OEM: 345-65021-0, 345-65021-0M, 345650210, 345650210M, 18-8923 Fitment: Replacement for Sierra Marine Outboards P/N: 18-8923 Replacement for Mallory Marine P/N: 9-45400 Replacement for Mariner 25HP 0N018456 THRU 0N055504 - Belgium - Cat.# 90-803821 - 2 CYL Replacement for Mariner 25HP 0N055505 & Up - Belgium - Cat.# 90-803821006 - 2 CYL Jet Replacement for Mariner 25HP 0N088578 & Up - Belgium - Cat.# 90-803821006 - JET 2 CYL Replacement for Mariner 25HP 0R106999 & Up - USA - Cat.# 90-898126006 - EFI 3CYL Replacement for Mariner 25HP 0R165086 & Up - USA - Cat.# 90-898126006 - Jet EFI 3CYL Jet Replacement for Mariner 30HP 0G575500 AND UP BEL - 2 CYL International Replacement for Mariner 30HP 0N001875 THRU 0N055504 - Belgium - Cat.# 90-803821 - 2 CYL Replacement for Mariner 30HP 0N055505 & Up - Belgium - Cat.# 90-803821006 - 2 CYL Jet Replacement for Mariner 30HP 0R106999 & Up - USA - Cat.# 90-898126006 - EFI 3CYL Replacement for Nissan Tohatsu models: 345-65021-0, 345-65021-0M, 345650210, 345650210M Replacement for Nissan Tohatsu 2-stroke outboard motors: M25, M30, M35, M40 Replacement for Nissan Tohatsu 4-stroke outboard motors: MFS25, MFS30 Replacement for Nissan Tohatsu 2-stroke outboard motors: NS25, NS30, NS35, NS40 Replacement for Nissan Tohatsu 4-stroke outboard motors: NSF25, NSF30 Package List: 1 x Water Pump Impeller Note: To ensure compatibility, verify your outboard motor model or serial number before purchase.