Water Pump Impeller for Mercury 2HP 2.5HP 3.5HP 2/4 Stroke Outboard Engine. This water pump impeller features 6 blades. Dimensions: Height: 14.30mm, External Impeller Overall Diameter: 33.58mm, Internal Shaft Insert Diameter: 10.25mm. This aftermarket impeller replaces Mercury outboard motor part 47-16154-3, Tohatsu outboard motor part 369-65021-1, and impeller 18-3098-39. It is newly manufactured, not used or rebuilt. Designed to match OEM specifications, it ensures reliable performance and durability. Simple hand tools are required for installation. Direct replacement with OE-level quality. Fits Mercury/ Mariner (4-Stroke) Carb: 2HP, 0R131842 & Up; 2.5HP, 0R131842 & Up; 3.5HP, 0R131842 & Up. Fits Mercury/ Mariner (2-Stroke): 4HP, 0T894439 & Up, 0P401000 & Up; 5HP, 0T894439 & Up, 0P401000 & Up; 4HP, 0G710613 THRU 0T894438, 0P017000 THRU 0P400999; 5HP, 0P017000 THRU 0P400999, 0G710613 THRU 0T894438. Fits Mercury/ Mariner: 2HP, 0T884302 THRU 0T894576; 3.3HP, 2.5HP, 0G710613 THRU 0T894576; 3.3HP, 2.5HP, 0P017000 THRU 0P400999; 6HP, 5HP, 4HP (4-Stroke), 0R000001 THRU 0R067089, 0P073456 THRU 0P400999; 2HP, 2.5HP, 3.3HP, 0T894577 & Up; 2.5HP, 3.3HP, 0P401000 & Up; 6HP, 5HP, 4HP (4-Stroke), 0R067090 & Up, 0P401000 & Up. Specifications: Number of Blades: 6; Height: 14.22mm; External Impeller Diameter: 33.78mm; Internal Shaft Insert Diameter: 10.30mm; Net Weight: 7g; Material: Impeller (CR), Shaft Sleeve (Nylon). Package Includes: 1 x Water Pump Impeller