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

🚤 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

🔄 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

📦 Condition

• Genuine Quicksilver part
• Brand new
• Supplied in original or equivalent packaging