821354A2 Mercury MerCruiser Water Pump Impeller Repair Kit | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Pump Impeller Repair Kit - Part Number: 821354A2

A genuine Quicksilver water pump impeller repair kit for selected Mercury and Mariner outboard lower-unit water pump applications. This kit services the impeller and related pump components to help restore correct cooling water flow and reduce overheating risk.

⚙️ Key Features

• Genuine Quicksilver OEM water pump impeller repair kit

• Correct Mercury part number 821354A2

• Replaces earlier 821354A1 kit reference

• Used on selected 9.9HP to 50HP Mercury / Mariner outboard applications

• Services lower-unit cooling water pump components

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 821354A2 → Supersedes 821354A1

• 821354A1 earlier OEM service kit reference

OEM / Related Numbers:

• 821354A2

• 821354A1

• 47-821354A2

• 47-821354A1

• 821354 A2

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Mercury / Mariner lower-unit water pump impeller repair applications

Typically suits:

• Engine models:

• Mercury 9.9HP Super outboard water pump applications where 821354A2 is specified

• Mercury 15HP Super outboard water pump applications where 821354A2 is specified

• Mercury 25HP 2-cylinder 2-stroke water pump applications where 821354A2 is specified

• Mercury 30HP 2-cylinder 2-stroke water pump applications where 821354A2 is specified

• Mercury 40HP 2-cylinder 2-stroke water pump applications where 821354A2 is specified

• Mercury 50HP 2-cylinder 2-stroke water pump applications where 821354A2 is specified

• Mercury 30HP 3-cylinder water pump applications where 821354A2 is specified

• Mercury 40HP 3-cylinder water pump applications where 821354A2 is specified

• Mercury 50HP 3-cylinder water pump applications where 821354A2 is specified

• Mercury 30HP EFI FourStroke water pump applications where 821354A2 is specified

• Mercury 40HP EFI FourStroke water pump applications where 821354A2 is specified

• Mercury / Mariner 25HP - 50HP 4-stroke lower-unit water pump applications where 821354A2 is specified

• HP Range: 9.9HP - 50HP where specified

• Engine Type: Mercury / Mariner small and mid-range outboard

• System Type: Lower-unit water pump impeller repair kit

🔌 Function

The kit restores the impeller and related pump sealing components that draw cooling water up from the lower unit and circulate it through the engine.

Common signs of failure:

• Weak or no tell-tale water flow

• Engine overheating at idle or under load

• Hardened, cracked or missing impeller vanes

• Water pump pressure loss after storage

• Pump output does not recover with impeller-only service

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging