47161543 Mercury MerCruiser Impeller | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Pump Impeller - Part Number: 47-161543

A genuine Quicksilver water pump impeller for selected small Mercury and Mariner outboard cooling systems. This impeller is fitted inside the lower-unit water pump housing and draws cooling water through the gearcase to protect the engine from overheating.

⚙️ Key Features

• Genuine Quicksilver OEM water pump impeller

• Correct Mercury part number 47-161543

• Supersedes to later Mercury 47-8M0204676 service reference

• Used on selected small Mercury / Mariner 2-stroke and FourStroke outboards

• Essential routine cooling-system service part

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 47-8M0204676 → Supersedes 47-161543

• 47-161543 current / earlier OEM impeller reference

• 47-16154 related earlier reference

OEM / Related Numbers:

• 47-161543

• 47161543

• 47-16154

• 161543

• 16154

• 6154

• 47-8M0204676

• 8M0204676

• 27-16159

Aftermarket / Verified Equivalents:

• Sierra: 18-3098

• Mallory: 9-45302

• Tohatsu: 369-65021-1

• Nissan / Tohatsu: 369650211

• HJumbo: HJB-P-149

🚤 Compatibility

Commonly used on:

• Mercury and Mariner small outboard lower-unit water pump applications

Typically suits:

• Engine models:

• Mercury 2HP small outboard water pump applications where 47-161543 is specified

• Mercury 2.5HP small outboard water pump applications where 47-161543 is specified

• Mercury 3.3HP 2-stroke with shift, 1993 and newer - serial 0D901217 and up

• Mercury 3.5HP carbureted small outboard applications where 47-161543 is specified

• Mercury 4HP / 5HP 2-stroke, 1987 and newer

• Mercury 4HP FourStroke, 1999 and newer

• Mercury 5HP FourStroke, 1999 and newer

• Mercury 6HP FourStroke, 1999 and newer

• Mariner 3.3HP small outboard water pump applications where 47-161543 is specified

• Mariner 4HP / 5HP 2-stroke applications where 47-161543 is specified

• Mariner 4HP / 5HP / 6HP FourStroke applications where 47-161543 is specified

• Tohatsu / Nissan 2HP, 2.5HP, 3.3HP, 3.5HP, 4HP, 5HP and 6HP applications using equivalent 369-65021-1 where specified

• HP Range: 2HP - 6HP

• Engine Type: Mercury / Mariner small outboard

• System Type: Lower-unit water pump impeller

🔌 Function

The impeller rotates inside the water pump housing to draw cooling water up from the lower unit and circulate it through the engine cooling system.

Common signs of failure:

• Weak or no tell-tale water flow

• Engine overheating

• Impeller vanes cracked, stiff or missing

• Reduced cooling flow after storage

• Rubber debris found in the cooling system

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging