# 4789983T Mercury MerCruiser Impeller | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Water Pump Impeller - Part Number: 47-89983T

  

Genuine Quicksilver/Mercury water pump impeller for selected Mercury and Mariner 30HP-70HP outboard lower-unit water pump assemblies. This OEM impeller is the impeller-only component used in the 89983-series water pump system and helps restore cooling-water flow through the gearcase pump.

  

⚙️ Key Features

  

• Genuine Quicksilver/Mercury OEM water pump impeller

• Designed for selected Mercury / Mariner 30HP-70HP outboards

• Used in 89983-series lower-unit water pump assemblies

• Helps restore tell-tale flow and cooling-water pressure

• Direct replacement for earlier 20268, 65959 and 89983 impeller references

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 47-89983T → Supersedes 47-89983

• 47-89983 → Supersedes 47-65959

• 47-65959 → Supersedes 47-20268

• 47-20268 earlier Mercury impeller reference

  

OEM / Related Numbers:

  

• 47-89983T

• 89983T

• 4789983T

• 47-89983

• 89983

• 89983B

• 47-65959

• 65959

• 47-20268

• 20268

• 47-89983Q1 related water pump repair kit

• 47-89983T1 related water pump repair kit

• 47-89983T2 related water pump repair kit

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-3007

• Mallory: 9-45300

• GLM: 89830

• REC: REC47-89983T

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner 30HP-70HP 2-stroke outboard lower-unit water pump assemblies

• Selected Mercury Jet Drive outboard applications using the matching 89983-series pump assembly

  

Typically suits:

  

• Engine models:

• Mercury 30 Jet, USA serial range 0C159200 - 0G589999

• Mercury 35HP 2-Cycle, USA serial 6445653 and up

• Mercury 35HP 2-Cycle, BEL serial 9384476 and up

• Mercury 35HP 2-Cycle, CAN serial 7209608 and up

• Mercury 40HP 2-Cycle 2-Cylinder, all engines through model year 1983

• Mercury 40HP 2-Cycle 4-Cylinder, USA serial 0C159200 and up

• Mercury 40HP 2-Cycle 4-Cylinder, BEL serial 9570790 and up

• Mercury 45HP 2-Cycle 4-Cylinder applications using the 89983-series pump

• Mercury 50HP 2-Cycle 4-Cylinder with plastic water pump assemblies

• Mercury 50HP / 60HP 2-Cycle 3-Cylinder, USA serial range 6428681 - 0D000749

• Mercury 50HP / 60HP 2-Cycle 3-Cylinder, BEL serial range 9385911 - 9683054

• Mercury 50HP / 60HP 2-Cycle 3-Cylinder, CAN serial 7208333 and up

• Mercury 70HP 2-Cycle 3-Cylinder, USA serial range 4977157 - 6428680

• Mercury 70HP 2-Cycle 3-Cylinder, AUS serial 8050200 and up

• Mercury 70HP 2-Cycle 3-Cylinder, BEL serial range 9196961 - 9385910

• Mercury 70HP 2-Cycle 3-Cylinder, CAN serial range 7110998 - 7208332

• Mariner 35HP-70HP 2-Stroke applications using the matching Mercury 89983-series pump assembly

  

• HP Range: 30HP - 70HP

• Engine Type: Mercury / Mariner 2-stroke outboard lower-unit water pump system

• Year Range: Application dependent; used across listed Mercury / Mariner 30HP-70HP serial-range applications

  

🔌 Function

  

The impeller rotates inside the lower-unit pump housing to draw cooling water through the gearcase and push it into the engine cooling system. A good impeller is essential for stable water pressure and engine temperature control.

  

Common signs of failure:

  

• Weak or inconsistent tell-tale water stream

• Engine overheating alarm

• Overheating at idle or low speed

• Cracked, hardened or missing impeller vanes

• Reduced cooling-water pressure

• Rubber impeller fragments found in the cooling system

• Pump not priming correctly after storage or service

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 67.8 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 67.80 AUD | In stock |

## Images

- 4789983T Mercury MerCruiser Impeller | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/4789983t-mercury-mercruiser-impeller-genuine-quicksilver-oem-part)
> Updated: 2026-05-17