3804854 Injector Core | Genuine Volvo Penta Part

🔧 Product Description

Core deposit for an injector, in the Fuel System group. It is the refundable charge raised against the old injector when the exchange unit is bought, and it comes back once the worn injector 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 3801854. We list that number as an exchange injector. It is one of 11 injector cores running through this block, and nothing published against them separates one from another, so order the number that matches the injector actually coming off rather than working from the description.

⚙️ Key Features

• Core deposit line, not an injector you can fit
• Belongs with the exchange unit, part number 3801854
• Refunded when the old injector is returned
• Not separable from the other injector cores here, so order by part number
• Fuel System group

🔌 Function

As a line item it carries the refundable core charge on the exchange; the injector itself meters the fuel for its cylinder and sprays it into the combustion chamber at the pressure and moment the engine calls for.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the injector being exchanged
• Rough idle with a knock from one cylinder, worst when the engine is cold
• Hard starting, smoke at the exhaust and a smell of unburnt fuel around the engine
• Uneven running and poor power, with the engine hunting at low speed
• On removal, a wet or coked nozzle, a dribbling spray pattern, or leak-off well above that of the others

🛠️ Service Notes

• The charge is refunded when the worn injector 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 3801854
• Renew the copper seat washer and the O-rings on refitting, and prove the fuel is clean before the exchange unit goes in, since dirt or water will take the next one out as well

📦 Condition

• Refundable core deposit - not a physical part