3806721 Injection Pump Core | Genuine Volvo Penta Part

🔧 Product Description

Refundable core deposit raised against an injection pump, listed under Fuel System. It holds the refundable charge on the old pump being handed back against an exchange unit. Nothing is shipped against the deposit, which exists only to be cancelled out when the worn pump arrives back. Core numbers in this series run three thousand above the unit they belong to, so the pump this deposit stands against is part number 3803721. The line is listed at 24.8 kg. Nothing goes out against the deposit, so read that as the scale weight of the pump coming back for credit - a two-man lift, or one man and a hoist. Every line in this run carries the same injection pump core name with no fitment against it, so the part number is the only thing that ties a deposit to a particular pump - take it from the unit being exchanged.

⚙️ Key Features

• Core deposit line, not an injection pump you can fit
• Belongs with the exchange unit, part number 3803721
• Refunded when the old injection pump is returned
• 24.8 kg listed, the return weight to plan freight around
• No engine application published against the line, so order by part number
• Fuel System group

🔌 Function

As a deposit line it does nothing mechanical; the injection pump it belongs to is what puts the fuel under injection pressure and sends a measured shot to each cylinder at the timed point in the cycle.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the injection pump being exchanged
• Far more fuel going back to the tank on the return than the engine should be spilling
• Smoke and rough running that a full service and a tank of clean fuel do not improve
• Metal glitter in the fuel filter bowl or in the return line
• Diesel weeping from the pump body, the top cover or the drive-end seal

🛠️ Service Notes

• The charge is refunded when the worn injection pump is returned, so keep the old pump and send it back rather than scrapping it
• Ordering this number on its own supplies no part - it goes on the order beside the exchange unit, part number 3803721
• Drain the old pump before it goes back, and keep the paperwork with it so the credit can be matched to the order it came off

📦 Condition

• Refundable core deposit - not a physical part