21124846 Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine engine circulation pump for later Volvo Penta 4.3-litre GM V6 petrol engines using the no-bypass, two-bolt pump configuration. The pump uses a brass impeller and circulates coolant through the block, cylinder heads and heat-transfer circuit.

🚤 Compatibility

Typically suits:

• Volvo Penta 4.3OSi-J
• Volvo Penta 4.3OSi-JF
• Volvo Penta 4.3Gi-200-R
• Volvo Penta 4.3GL-J
• Volvo Penta 4.3GL-JF
• Volvo Penta 4.3GL-P
• Volvo Penta 4.3GXi-225-R
• Volvo Penta 4.3GXiE-225-R
• Volvo Penta 4.3GXiE-M
• Volvo Penta 4.3GXi-P
• Volvo Penta 4.3GXiE-P
• Volvo Penta 4.3GXi-Q
• Volvo Penta 4.3GXiE-Q
• Volvo Penta 4.3GXi-J
• Volvo Penta 4.3GXi-JF
• Volvo Penta V6-200-A
• Volvo Penta V6-225-A
• Volvo Penta V6-225-E-A

• Engine Family: V
• HP Range: 200-225 HP

⚙️ Key Features

• 4.3L GM V6 marine circulation pump
• No-bypass configuration
• Two-bolt pump layout
• Brass impeller

🔌 Function

The pump circulates coolant through the engine so combustion heat can be transferred to the raw-water or heat-exchanger circuit.

⚠️ Common Signs of Failure

• Coolant leaking from the pump weep hole
• Bearing rumble or grinding
• Reduced coolant circulation
• Corroded or damaged impeller
• Pump shaft seizing

🛠️ Service Notes

• Establish why the old pump failed before the new one goes on — debris, a blocked strainer, a starved supply or a dry run will take out the replacement just as quickly
• Fit new gaskets, O-rings and seals on the pump's joint faces and drive, with the faces clean, and use only the sealant the workshop manual for your engine specifies
• Check the drive and the shaft it runs on — coupling, gear, key, belt or drive dog — while access is good, and renew anything doubtful
• Prime or fill the pump as the manual for your engine directs, bleed the system afterwards, and confirm it is actually delivering before the boat leaves
• Tighten mounting and cover fasteners evenly to the manual's figures; pump housings distort easily, and a distorted housing either leaks or binds

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• MerCruiser 46-879194401
• MerCruiser 46-8M6005225
• MerCruiser 879194366
• MerCruiser 879194401
• MerCruiser 8M0094406
• MerCruiser 8M6005225

Aftermarket / Verified Equivalents

• RECMAR: REC879194401
• Sierra: 18-3506
• Sierra: 18-3583
• Sierra: 18-3599
• Sierra: 18-3506-1

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging