3806927 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 3803927, which is the number to quote for the component itself. We list that number as an injector, reman. It is one of eighteen injector cores running through this block, and five of those publish no weight at all, so no ranking by mass can be made across the set. Nothing published separates this line from injector core 3806931 - both are named alike and both read 0.136 kg, which is 0.3 of a pound to the gram and so a rounded figure. The exchange injectors behind them are not the same part, though: 3803927 is listed at 0.138 kg and 3803931 at 0.313 kg. Order by the exchange number, not by the deposit weight.

⚙️ Key Features

• Core deposit line, not an injector you can fit
• Belongs with the exchange unit, part number 3803927
• Refunded when the old injector is returned
• Published weight 0.136 kg, exactly 0.3 lb
• Indistinguishable from injector core 3806931 on the deposit line
• Exchange injector 3803927 listed at 0.138 kg
• Fuel System group

🔌 Function

As a line item it carries the refundable core charge on the exchange; the injector itself atomises fuel into the combustion chamber at the pressure and timing the engine's fuelling demands.

⚠️ 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
• A rough idle with one cylinder plainly doing less work than the rest
• Black smoke, a smell of unburnt diesel and fuel consumption climbing
• A hard knock or rattle from one cylinder that sharpens as the engine warms
• Back-leakage over specification, or a nozzle found dribbling rather than atomising on test

🛠️ 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 3803927
• Injectors are normally changed as a set, since one new one alongside worn neighbours will not settle the running, and the copper seat washer and clamp fixings should be treated as single-use

📦 Condition

• Refundable core deposit - not a physical part