3806315 Cylinder Head Core | Genuine Volvo Penta Part

🔧 Product Description

Core deposit for a cylinder head, from the Engine group. It is the refundable charge raised against the old cylinder head when the exchange unit is bought, and it comes back once the worn cylinder head 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 3803315, which is the number to quote for the component itself and the number to check availability against. It carries a published weight of 23.133 kg, which is the mass of the cylinder head itself and is what to plan the return leg around, since nothing goes out against the deposit. Core 3806316 is published at exactly the same weight, so weight will not tell them apart - order the number that matches the cylinder head actually coming off.

⚙️ Key Features

• Core deposit line, not a cylinder head you can fit
• Belongs with the exchange unit, part number 3803315
• Refunded when the old cylinder head is returned
• Published weight 23.133 kg
• Same published weight as core 3806316, so order by part number

🔌 Function

As a line item it carries the refundable core charge on the exchange; the head itself closes the top of the cylinders, carries the valves, ports and injector seats, and holds the combustion pressure against the block.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the cylinder head being exchanged
• Coolant disappearing with no leak to be found outside the engine
• Bubbles rising in the header tank, or coolant pushing back when the engine is worked
• White smoke and a sweet smell at the exhaust once the engine is hot
• Cracks between the valve seats or around the injector bore, or a face pulled beyond the permitted skim, found on strip-down

🛠️ Service Notes

• The charge is refunded when the worn cylinder head 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 3803315
• Have the block face, liner stand and studs checked while the head is off, and renew the head gasket and head bolts with the exchange unit

📦 Condition

• Refundable core deposit - not a physical part