20900319 Valve Seat | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Cylinder Head Valve Seat - Part Number: 20900319

A genuine Volvo Penta hardened valve-seat insert for the specified cylinder-head position. The insert is machined after installation to provide a concentric sealing surface and heat-transfer path between the valve face and the cylinder head.

Correct selection must be confirmed against the complete Volvo Penta product designation, product number and serial number because neighbouring engine variants can use different dimensions, connections or calibration.

⚙️ Key Features

• Genuine Volvo Penta Cylinder Head Valve Seat - part number 20900319

• Hardened seat material for repeated combustion loading

• Interference-fit outside diameter for the cylinder-head counterbore

• Machining allowance for final seat angle and width

• Transfers valve heat into the cylinder head

• Maintains compression and valve alignment

• Installation requires specialist cylinder-head equipment and dimensional checks

• Confirm the complete engine product number and serial number before ordering

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20900319 (current OEM reference)

OEM / Related Numbers:

• 20900319

• VOE20900319

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Application-specific Volvo Penta cylinder-head and valve-train system

Typically suits:

• Engine models:

• Volvo Penta engine or auxiliary installation specifically listing this part number

• HP Range: Not a primary selection criterion; match the exact engine/product designation and serial number

• Engine Type: Application-specific Volvo Penta cylinder-head and valve-train system

• Year / Serial Range: Production period and serial breaks vary by model; confirm against the complete Volvo Penta product number and serial number

• Application Note: Confirm the complete product designation, product number and serial number before ordering; neighbouring part numbers are not automatically interchangeable.

🔌 Function

When the valve closes, its face contacts the machined seat to seal the combustion chamber. The contact band also conducts heat away from the valve into the cooled cylinder head.

Common signs of failure:

• Low compression or cylinder leakage

• Burnt, cracked or recessed seat

• Valve clearance changes as the seat moves

• Poor concentricity causes uneven valve contact

• Seat loosens in the cylinder head

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging