Usage Tips:Features: 1.Part Number: According to the factory specifications, replacing part number is 47161541/47161541, replace OEM is 345650210/345650210M/345650210/345650210M/188923. 2.Perfect Replacement: Water pump impeller, replacement for Nissan Tohatsu Outboard 25/30/35/40 HP, replacement for Mariner Outboard 25/30 HP. 3.High Compatibility: Compatible with the outboards boat motor replacement for Sierra 188923, replacement for Mallory Marine 945400, makes repair and maintenance of water pumps easy. 4.Rigorous Testing: The flexible impeller undergoes strict quality procedures to ensure reliable, efficient and longlasting performance. You can replace the impeller in advance according to the load of the engine. 5.Easy Installation: Easy to install and use. Direct replacement for the old or damaged impeller, offers better performance for engine cooling system. Specification: Item Type: Water Pump Impeller Color: Black Material: Neoprene and Plastic Hub Number of Blades: 6 Internal / Insert / Hub / Shaft Size: Approx. 0.681in/ 1.73cm Overall / Outer / External Diameter: Approx. 1.715in/ 4.36cm Depth / Height / Width/ Thickness: Approx. 0.799in/ 2.03cm 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 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 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 PackageList: 1 x Water Pump Impeller Note: To ensure that this impeller is suitable for your marine motor, it is important to check your outboard model or S/N before purchasing.