20459643 Valve Seat | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta valve seat insert from the Engine group, weighing 0.029 kg and listed for 6 fitments across the TAD series. No oversize grade is marked against this listing.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD943VE
• Volvo Penta TAD940GE
• Volvo Penta TAD940VE
• Volvo Penta TAD941VE
• Volvo Penta TAD941GE
• Volvo Penta TAD942VE

• Engine Family: TAD

⚙️ Key Features

• Valve seat insert
• 0.029 kg
• Engine group
• No oversize grade marked against this listing
• Listed for 6 TAD-series fitments

🔌 Function

Provides the precision sealing and heat transfer surface the valve closes against.

⚠️ Common Signs of Failure

• Compression leakage traced to the valve running on that seat
• The seat found cracked, burnt, pitted, recessed or loose in the head
• Valve clearance closing up repeatedly as the seat recedes into the head
• The valve unable to be refaced to give the specified sealing contact
• Hot spots or misfire on that cylinder under load

🛠️ Service Notes

• Measure the cylinder head recess before ordering, since a head that has already been machined needs an oversize insert instead - 20459332 is the 0.20 mm oversize listing here
• Seat replacement is a machine shop job: the recess must be cut concentric and the seat angle cut once the insert is in

🔄 Supersession & Cross Reference

Aftermarket / Verified Equivalents

• DT Spare Parts: 2.10589
• Freccia: VS08-104
• Sampa: 037.491

📦 Condition

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