# 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

## Details

- **Price:** 97.0 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 97.00 AUD | In stock |

## Images

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

---

> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/821354a2-mercury-mercruiser-water-pump-impeller-repair-kit-genuine-quicksilver-oem-part)
> Updated: 2026-05-17