21427730 Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 7.4L/8.2L Crankshaft-Mounted Seawater Pump - Part Number: 21427730

Genuine crankshaft-driven flexible-impeller seawater pump for Volvo Penta 7.4-litre and 8.2-litre petrol marine engines. It replaces earlier pump references 3857203, 3862483 and 3812694 and cross-references to Johnson Pump F5B-9 model 10-13567-12.

⚙️ Key Features

• 7.4L and 8.2L petrol-engine raw-water pump

• Crankshaft-mounted drive

• Flexible-impeller construction

• Current replacement for earlier Volvo pump references

• Verified Johnson Pump manufacturer equivalent

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21427730 → Supersedes 3857203 / 3862483 / 3812694

OEM / Related Numbers:

• 21427730

• 3857203

• 3862483

• 3812694

• Johnson Pump 10-13567-12

Aftermarket / Verified Equivalents:

• Johnson Pump: F5B-9 10-13567-12

Associated Service Parts:

• 3857954 - Stop lug used on specified pump versions

• Flexible impeller and rebuild kit must be matched to the exact pump revision

🚤 Compatibility

Confirmed engine family:

• Volvo Penta 7.4L V8 petrol engines using the crankshaft-mounted pump

• Volvo Penta 8.2L V8 petrol engines using the crankshaft-mounted pump

• Related DPX and inboard packages where one of the listed pump references is specified

• Pump Drive: Crankshaft-mounted

• Confirm mounting bolt pattern, port orientation, hose sizes and engine serial number

🔌 Function

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

Common signs of failure:

• Engine overheating

• Low raw-water discharge

• Impeller damage

• Shaft-seal leakage

• Bearing noise

• Pump-body corrosion

• Loose crankshaft mounting

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging