# 46-8M0070780 Mercury MerCruiser Water Pump Kit | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Water Pump Repair Kit - Part Number: 46-8M0070780

  

A genuine Quicksilver water pump repair kit for selected small Mercury outboard applications, including Japanese-built International 9.9HP to 18HP 2-stroke models and selected 15HP SeaPro FourStroke models. This kit services the lower-unit water pump to restore reliable cooling water flow.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM water pump repair kit

• Correct Mercury part number 46-8M0070780

• Replaces earlier Mercury 853792A4 water pump kit reference

• Used on selected 9.9HP - 18HP International 2-stroke and 15HP SeaPro FourStroke applications

• Helps prevent overheating caused by worn water pump components

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 46-8M0070780 → Supersedes 853792A4

• 853792A4 earlier OEM reference

  

OEM / Related Numbers:

  

• 46-8M0070780

• 8M0070780

• 853792A4

• 853792T04

• 362-87322-0

  

Aftermarket / Verified Equivalents:

  

• Recmar: REC46-8M0070780

• Tohatsu: 362-87322-0

• No additional aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury small outboard lower-unit water pump applications

• Japanese-built Mercury / Mariner / Tohatsu small engine water pump applications where 46-8M0070780 is specified

  

Typically suits:

  

• Engine models:

• Mercury 9.9HP 2-cylinder International 2-stroke, Japanese-built models - serial 0N059858 and up

• Mercury 15HP 2-cylinder International 2-stroke, Japanese-built models - serial 0N055285 and up

• Mercury 18HP 2-cylinder International 2-stroke, Japanese-built models - serial 0N055285 and up

• Mercury 15HP Carb SeaPro FourStroke - serial 0R051685 to 0R123564

• Mercury 15HP Carb SeaPro FourStroke - serial 0R123565 and up

• Tohatsu M9.9 two-stroke applications using equivalent pump kit 362-87322-0

• Tohatsu M15D2 two-stroke applications using equivalent pump kit 362-87322-0

• Tohatsu M18E2 two-stroke applications using equivalent pump kit 362-87322-0

• Tohatsu MFS9.9 FourStroke applications using equivalent pump kit 362-87322-0

• Tohatsu MFS15 FourStroke applications using equivalent pump kit 362-87322-0

• Tohatsu MFS18B2 FourStroke applications using equivalent pump kit 362-87322-0

  

• HP Range: 9.9HP - 18HP

• Engine Type: Mercury / Mariner small outboard, Japanese-built International and SeaPro applications

• System Type: Lower-unit water pump repair kit

  

🔌 Function

  

The water pump repair kit renews the service components that draw and circulate cooling water through the outboard engine.

  

Common signs of failure:

  

• Weak tell-tale water stream

• Engine overheating

• Impeller vanes cracked, hard or missing

• Pump output drops at idle

• Cooling system pressure does not recover after impeller-only replacement

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 95.0 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 95.00 AUD | In stock |

## Images

- 46-8M0070780 Mercury MerCruiser Water Pump Kit | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/46-8m0070780-mercury-mercruiser-water-pump-kit-genuine-quicksilver-oem-part)
> Updated: 2026-05-17