3804518 Longblock Core | Genuine Volvo Penta Part

🔧 Product Description

Refundable core deposit raised against the exchange longblock on Volvo Penta part number 3801518, listed under Engine. It is an accounting line rather than a fittable part: the charge goes on when the exchange longblock is supplied and comes back off when the old longblock is returned, and nothing is shipped against the deposit itself. Twenty-three longblock deposits run through this part of the block, from 3804474 to 3804519, and apart from the weight on 3804490 nothing separates them beyond the unit each is raised against, so take the number from the longblock being supplied.

⚙️ Key Features

• Refundable core deposit, not a fittable part
• Paired unit number 3801518
• Nothing ships against this line
• Credited back when the old longblock is returned
• Listed under Engine

🔌 Function

Carries the refundable core charge on the outgoing longblock rather than doing any mechanical work itself. A longblock is the block, crankshaft, pistons, rods and cylinder head supplied assembled as one exchange unit.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the longblock being exchanged
• Heavy blow-by from the breather, with oil consumption and smoke rising
• Knocking or rumbling under load, worst when the oil is hot
• Oil pressure low or falling away at idle, with bearing material in the filter or sump
• Compression low or uneven across the cylinders, and starting getting harder

🛠️ Service Notes

• The charge is credited back once the old longblock is returned through the dealer; it has to go back complete and rebuildable, and a stripped, cracked or seized-solid longblock can be refused or the credit cut.
• Ordering this number on its own supplies no part. It only makes sense raised alongside exchange unit 3801518, so confirm that unit is obtainable and check its exact designation before quoting.
• This part of the block runs engine, base engine, longblock and shortblock deposits side by side; those are four different builds of exchange unit and the deposits are not interchangeable, so match the wording as well as the number.

📦 Condition

• Refundable core deposit - not a physical part