4789984T3 Mercury MerCruiser Impeller 89984T 3 | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Pump Impeller - Part Number: 47-89984T3

Genuine Quicksilver/Mercury water pump impeller for selected MerCruiser #1, R, MR and Alpha One Gen I stern drive water pump assemblies, plus selected Mercury / Mariner outboard gearcase applications. This OEM 89984-series impeller restores cooling-water flow through the lower-unit or stern drive pump and helps protect the engine from overheating.

⚙️ Key Features

• Genuine Quicksilver/Mercury OEM water pump impeller

• Used in selected MerCruiser #1, R, MR and Alpha One Gen I stern drive applications

• Also used in selected Mercury / Mariner outboard gear housing water pump assemblies

• Helps restore cooling-water pressure and raw-water flow

• Direct replacement for earlier 30221, 65960 and 89984-series impeller references

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 47-89984T3 → Supersedes 47-89984B2

• 47-89984B2 → Supersedes 47-89984

• 47-89984 → Supersedes 47-65960

• 47-65960 → Supersedes 47-30221

• 47-30221 earlier Mercury impeller reference

OEM / Related Numbers:

• 47-89984T3

• 89984T3

• 4789984T3

• 47-89984T 3

• 89984T 3

• 47-89984B2

• 89984B2

• 47-89984

• 89984

• 47-899842

• 899842

• 47-899844

• 899844

• 47-89984T4 later / related service reference

• 89984T4

• 47-30221

• 30221

• 47-65960

• 65960

• 47-85460

• 85460

• 47-803631T

• 803631T

• 47-F694065

• F694065

Aftermarket / Verified Equivalents:

• Sierra: 18-3017

• Mallory: 9-45306

• GLM: 89840

• SEI: 96-102-03

• SEI: 96-102-06K

🚤 Compatibility

Commonly used on:

• MerCruiser #1, R, MR and Alpha One Gen I stern drive water pump assemblies

• Mercury / Mariner outboard gearcase water pump assemblies using the 89984-series impeller

• Selected Chrysler / Force / US Marine cross-reference applications using the matching 803631T / F694065 impeller style

Typically suits:

• Engine models:

• MerCruiser #1 stern drive units through serial number 0D494568

• MerCruiser R stern drive units through serial number 0D494568

• MerCruiser MR stern drive units through serial number 0D494568

• MerCruiser Alpha One Gen I stern drive units through serial number 0D494568

• MerCruiser 190 Inboard raw-water pump, serial range 1564539 - 1720903

• MerCruiser 225 Inboard raw-water pump, serial range 1539620 - 2278646

• Mercury 150HP Pro XS, serial range 1B690542 - 2B535572, gear housing / driveshaft water pump application

• Mercury 175HP DFI Pro XS, serial range 1B516339 - 2B535624, gear housing / driveshaft water pump application

• Mercury 200HP EFI, serial range 0T801000 - 1B226999, standard / counter-rotation gear housing water pump application

• Mercury V-150 EFI 2-Stroke gear housing water pump application

• Mercury / Mariner early inline 6-cylinder outboard gearcase applications using 89984-series impeller

• Mercury / Mariner early V6 outboard gearcase applications using 89984-series impeller

• Chrysler / Force / US Marine outboard applications using 47-803631T / 47-F694065 cross-reference impeller

• HP Range: Approximately 65HP - 250HP for Mercury / Mariner outboard applications where the 89984-series gearcase pump is fitted, plus listed MerCruiser stern drive and inboard pump applications

• Engine Type: Mercury / Mariner outboard and MerCruiser stern drive / inboard raw-water pump system

• Year Range: Application dependent; MerCruiser #1 / R / MR / Alpha One Gen I through serial number 0D494568, with outboard fitment dependent on gearcase and serial number

🔌 Function

The impeller rotates inside the lower-unit or stern drive water pump housing to draw cooling water through the drive and circulate it through the engine cooling system. Correct impeller condition is critical for raw-water flow, temperature control and engine protection.

Common signs of failure:

• Weak or no tell-tale water stream

• Engine overheating alarm

• Reduced cooling-water pressure

• Overheating at idle, low speed or under load

• Cracked, hardened, curled or missing impeller vanes

• Rubber fragments found in the cooling system

• Pump housing damage from failed impeller operation

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging