3804711 Inboard Drive Core | Genuine Volvo Penta Part

🔧 Product Description

Core deposit for an inboard drive. It is the refundable charge raised against the old inboard drive when the exchange unit is bought, and it comes back once the worn inboard drive 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 3801711, which is the number to quote for the component itself. It is one of 6 inboard drive cores running through this block, and nothing published against them separates one from another, so order the number that matches the inboard drive actually coming off rather than working from the description.

⚙️ Key Features

• Core deposit line, not an inboard drive you can fit
• Belongs with the exchange unit, part number 3801711
• Refunded when the old inboard drive is returned
• Not separable from the other inboard drive cores here, so order by part number

🔌 Function

As a line item it carries the refundable core charge on the exchange; the drive itself carries the power from the engine through the transom and down to the propeller, taking the thrust and providing the steering and trim movement of the leg.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the inboard drive being exchanged
• Whine or growl from the leg that changes with engine speed or with the gear selected
• Milky or grey oil at the drain, or the oil level dropping between services
• Vibration through the hull, or shifting that is slow, heavy or will not engage
• On strip-down, pitted gear teeth, brinelled bearings, cut seals and corroded housings

🛠️ Service Notes

• The charge is refunded when the worn inboard drive 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 3801711
• Where only part of the leg is at fault, the upper gear cores 3804709 and 3804720 and the lower gear cores in this block cover those sections on their own, so confirm what is being exchanged before this number is used

📦 Condition

• Refundable core deposit - not a physical part