3806910 High-Pressure Pump Core | Genuine Volvo Penta Part

🔧 Product Description

Core deposit for a high-pressure pump, in the Fuel System group. It is the refundable charge raised against the old high-pressure pump when the exchange unit is bought, and it comes back once the worn high-pressure pump is returned. The line itself is an accounting entry rather than a part, so nothing ships against it on its own. Under Volvo Penta's core numbering the exchange unit it belongs to takes part number 3803910, which is the number to quote for the component itself. We list that number as a high-pressure pump, reman. It is the only high-pressure pump core in this block, so nothing here can be mistaken for it. The deposit line carries a published weight of 7.711 kg, which is seventeen pounds to the gram, while the exchange pump 3803910 is published at 1.059 kg. The two figures are a long way apart and cannot both describe the same pump, so treat neither as a shipping weight and do not plan handling from them. The pairing to 3803910 has been checked directly against Volvo Penta's own listing.

⚙️ Key Features

• Core deposit line, not a high-pressure pump you can fit
• Belongs with the exchange unit, part number 3803910
• Refunded when the old high-pressure pump is returned
• The only high-pressure pump core in this block
• Published weight 7.711 kg, exactly 17 lb
• Deposit and exchange weights disagree - 7.711 kg against 1.059 kg on 3803910
• Pairing confirmed against Volvo Penta's listing
• Fuel System group

🔌 Function

As a line item it carries the refundable core charge on the exchange; the high-pressure pump itself takes filtered fuel and raises it to rail pressure, feeding the common rail the injectors draw from.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the high-pressure pump being exchanged
• Long cranking before it fires, with a rail pressure fault logged at the helm
• Power cut back, or the engine dropping into a limp setting under load
• A metallic knock or whine from the pump drive that rises with engine speed
• Diesel in the engine oil, or fine metal swarf found when the fuel filter is cut open

🛠️ Service Notes

• The charge is refunded when the worn high-pressure pump is returned, so keep the old unit 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 3803910
• If the old pump has broken up internally the swarf will have travelled through the rail and injectors, so check both before the exchange pump goes on or the new one will follow the old one

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• Bosch: 0 445 020 057

📦 Condition

• Refundable core deposit - not a physical part