# 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

## Details

- **Price:** 37.71 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 37.71 AUD | In stock |

## Images

- 47161543 Mercury MerCruiser Impeller | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/47161543-mercury-mercruiser-impeller-genuine-quicksilver-oem-part)
> Updated: 2026-05-17