3803677 Injection Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta remanufactured injection pump weighing 24.5 kg, recorded against three applications in the THD family, and superseding injection pump 425823. The reman catalogue lists this number against THD102KB, with THD102K and KD taking 3803675 instead - so the suffix on the engine plate decides it. THD is the only family it appears against, which makes it the easiest of the large pumps in this range to place; most of the others span three or more families and are separated only by weight and by the number they replace. Supplied on exchange: core deposit 3806677 is charged alongside it and refunded once the old pump is returned.

⚙️ Key Features

• Remanufactured injection pump
• 24.5 kg
• Listed in the reman catalogue for THD102KB
• Three applications in the THD family
• Supersedes injection pump 425823

🔌 Function

Raises fuel to injection pressure and meters the right quantity to each cylinder in firing order, setting the engine's power and speed.

⚠️ Common Signs of Failure

• Hard starting, or long cranking before it fires
• Power down, with a flat spot as the throttle is opened
• Black smoke and uneven running at idle
• Engine speed hunting or surging
• Diesel weeping from the pump body or the drive-end seal

🛠️ Service Notes

• Check the engine suffix - THD102KB takes this pump and THD102K and KD take 3803675
• Have the pump timed and its fuel settings checked on fitting - a pump that is right internally will still run badly out of time
• If the engine's list shows 425823, this is the current number, and core deposit 3806677 goes on the same order

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3803677 → Supersedes 425823

OEM / Related Numbers

• 425823 earlier number superseded by this part

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging