21212800 Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 8.1L Crankshaft-Mounted Seawater Pump - Part Number: 21212800

Genuine crankshaft-mounted flexible-impeller seawater pump for later Volvo Penta 8.1-litre petrol marine engines and IPS packages. It replaces pump 3812518 and cross-references to Johnson Pump 10-13470-03 and JMP JPR-VP2800G.

⚙️ Key Features

• Current replacement for pump 3812518

• 8.1L V8 crankshaft-mounted design

• 1-1/4 inch inlet and 1 inch outlet configuration

• Verified Johnson, JMP and Albinus replacements

• Uses the later support-wire and grommet arrangement

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21212800 → Supersedes 3812518

OEM / Related Numbers:

• 21212800

• 3812518

• Johnson Pump 10-13470-03

Aftermarket / Verified Equivalents:

• JMP Marine: JPR-VP2800G

• Johnson Pump: 10-13470-03

• Albinus: 05-01-044

Associated Service Parts:

• 22307636 / 21212794 / 21213664 - Impeller references by pump revision

• JMP 7136K - Related impeller-kit reference; confirm pump revision

🚤 Compatibility

Confirmed engine family:

• Later Volvo Penta 8.1Gi petrol engines

• Volvo Penta 8.1IPS petrol installations using pump 21212800

• Engine Type: GM-based 8.1-litre V8 petrol marine engine

• Inlet: 1-1/4 inch

• Outlet: 1 inch

• Confirm pump support-wire arrangement, port orientation, crankshaft mounting and engine serial number

🔌 Function

The pump supplies raw water to the 8.1L engine cooling, cooler and wet-exhaust circuits.

Common signs of failure:

• Engine overheating

• Low exhaust-water discharge

• Impeller damage

• Shaft-seal leakage

• Bearing or shaft noise

• Corroded housing

• Loose support wire or grommet

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging