3583679 Valve Seat | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta valve seat in the standard size, from the Engine group, weighing 0.023 kg and listed for 18 D series engine applications. It supersedes part number 3581861.

🚤 Compatibility

Typically suits:

• Volvo Penta D6-340I-G
• Volvo Penta D6-380I-G
• Volvo Penta D6-440I-G
• Volvo Penta D6-480I-G
• Volvo Penta D6-300A-G
• Volvo Penta D6-340A-G
• Volvo Penta D6-380A-G
• Volvo Penta D6-440I-WJ-G
• Volvo Penta D6-480I-WJ-G
• Volvo Penta D6-300D-G
• Volvo Penta D6-340D-G
• Volvo Penta D6-380D-G
• Volvo Penta D6-440D-G
• Volvo Penta D6-480D-G
• Volvo Penta D6-400A-G
• Volvo Penta D6-440A-G
• Volvo Penta D6-300I-G
• Volvo Penta D6-480A-G

• Engine Family: D
• HP Range: 300-480 HP

⚙️ Key Features

• Standard size
• 0.023 kg
• Supersedes 3581861
• 18 D series engine applications

🔌 Function

Provides the hardened face the valve closes against in the cylinder head.

⚠️ Common Signs of Failure

• Compression loss, poor starting or a misfire
• Seat recessed, pitted or burnt
• Valve no longer sealing on a dry test
• Seat loose or dropped in the head
• Valve clearances closing up as the seat recesses

🛠️ Service Notes

• Standard size — seat 3583680 is the 0.20 mm oversize version for a head that has been machined out
• Seat 3583681 is also standard at the same 0.023 kg on the same 18 applications, so the published figures cannot separate the two; order by part number for the valve concerned
• Seats go in as an interference fit and need the head at the right temperature, so this is machine-shop work rather than a bench job

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3583679 → Supersedes 3581861

OEM / Related Numbers

• 3581861 earlier number superseded by this part

📦 Condition

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