3804425 Longblock Engine Core | Genuine Volvo Penta Part

🔧 Product Description

Core deposit for a Volvo Penta longblock engine, from the Engine group. It is an accounting line rather than a fittable part: the refundable charge raised against the old longblock engine when a replacement is supplied on exchange, credited back once that worn unit is returned. Ordering it supplies nothing in itself. It is raised against unit 3801425. Core numbers in this series run three thousand above the unit they belong to, so the deposit and the unit are read as a pair.

⚙️ Key Features

• Refundable core deposit on a longblock engine, not a fittable part
• Credited back on return of the old longblock engine
• Pairs with unit 3801425, three thousand below this core number

🔌 Function

Holds the refundable deposit raised against the old longblock engine when a replacement is bought on exchange, and releases it as a credit when that unit is returned. It does no mechanical work. The longblock itself is the block, crankshaft, pistons and cylinder head built up as one assembly, ready to take the ancillaries over from the engine it replaces.

⚠️ 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 engine being exchanged
• Compression down across one or more cylinders, hard starting and lost power
• Blue smoke and strong crankcase breathing from worn bores or tired rings
• Oil pressure low once hot, with knocking from the bearings
• Coolant in the oil, oil in the coolant, or the header tank pressurising

🛠️ Service Notes

• The deposit is refunded when the old longblock engine is sent back, so return it complete and as it came off - the credit depends on the core being fit to rebuild, and a stripped or broken-up unit can lose it
• Ordering this line on its own supplies no part. It has to go on the order alongside unit 3801425, which is the item that actually ships

📦 Condition

• Refundable core deposit - not a physical part