Feature: 1. Part Number: According to the original 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 HubNumber of Blades: 6Internal / Insert / Hub / Shaft Size: Approx. 0.681in/ 1.73cmOverall / Outer / External Diameter: Approx. 1.715in/ 4.36cmDepth / Height / Width/ Thickness: Approx. 0.799in/ 2.03cmPart Number: 47-161541, 47-16154-1Replace 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 9-45400Replacement 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 3CYLReplacement 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. Package List: 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.