3806944 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 3803944, 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. The exchange injector 3803944 is listed at 0.193 kg. Injector core 3806945 pairs to a closely comparable injector at 0.227 kg, and neither deposit line carries a weight, so the exchange number is the only thing that separates the two.

⚙️ Key Features

• Core deposit line, not an injector you can fit
• Belongs with the exchange unit, part number 3803944
• Refunded when the old injector is returned
• Exchange injector 3803944 listed at 0.193 kg
• Easily confused with injector core 3806945
• 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 3803944
• 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