3804878 Injector Core | Genuine Volvo Penta Part

🔧 Product Description

Nothing is despatched against this number. It is the refundable core charge that goes on the invoice alongside an exchange injector, standing in for the worn injector until that unit comes back. Volvo Penta numbers a core deposit 3000 above the unit it belongs to, which puts this one against 3801878, listed in our catalogue as Injector Exch. Near-identical injector deposits sit alongside it, among them 3804895, 3804898 and 3804912, and nothing in our records separates one from another, so order by the number of the injector being exchanged. Credit follows the return of the worn unit rather than the sale itself.

⚙️ Key Features

• Refundable core charge, not a part that ships
• Pairs with 3801878, listed as Injector Exch
• Raised against the old injector on an exchange purchase
• Near-identical siblings include 3804895 and 3804898
• Credited when the old injector is returned

🔌 Function

Carries the refundable core charge on an injector exchange. The line ships nothing itself; the injector it stands against atomises fuel into the combustion chamber at the pressure and instant 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 or a steady misfire on one cylinder, often with a knock from that pot
• Black or white smoke and fuel consumption that has crept up
• Hard starting, or the engine running unevenly until it warms through
• A poor spray pattern, dribbling or an out-of-specification opening pressure on the test rig

🛠️ Service Notes

• Ordering this line on its own supplies no injector. It is the deposit that rides alongside the exchange unit, so the injector itself has to be ordered as a separate line.
• The charge is refunded when the old injector comes back to us complete and rebuildable; a unit that has been stripped for parts, broken up or damaged in transit is normally refused for credit.
• Renew the injector seat washer and any sealing O-rings on refitting, and check the leak-off and the return line before condemning a neighbouring injector.

📦 Condition

• Refundable core deposit - not a physical part