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