3803665 Cylinder Head Exch | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta remanufactured cylinder head for the D12C-A MP, weighing 217.271 kg - the only single-application cylinder head listed here. Reman cylinder heads are supplied ready for installation with the valves and springs already fitted, and with camshaft-bearing housings included where the design has them. The D12D head 3803666 is 226.793 kg and covers fifteen applications, so the engine generation is the thing to confirm before ordering. Supplied on exchange, so a core fee is added to the invoice and refunded when the worn head is returned, and you may keep the old one until the new head is fitted and the engine is running again.

🚤 Compatibility

Typically suits:

• Volvo Penta D12C-A MP

• Engine Family: D

⚙️ Key Features

• For the D12C-A MP
• 217.271 kg
• Comes ready to install with valves and springs fitted
• The D12D head is 3803666 at 226.793 kg
• 12-month Volvo Penta warranty, 24 months when fitted by an authorised dealer

🔌 Function

Closes the top of the cylinders and carries the valves, seats, ports and injector bores, forming the roof of each combustion chamber along with the upper coolant and oil passages.

⚠️ Common Signs of Failure

• Coolant loss with no external leak, or bubbles in the header tank
• White steam from the exhaust and a sweet smell
• Compression low on one or more cylinders
• Oil and coolant mixing into an emulsion
• Cracks or corrosion pitting around the valve seats or injector bores found on strip-down

🛠️ Service Notes

• This head is listed for the D12C-A MP only - the D12D engines take 3803666
• Renew the head gasket and single-use head bolts, and have the block deck checked for flatness before fitting
• Core deposit 3806665 carries the exchange fee and is refunded when the old head goes back

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3803665 → Supersedes 3803497

OEM / Related Numbers

• 3803497 earlier number superseded by this part

📦 Condition

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