466266 Valve Seat | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta valve seat in the standard size, marked Std D, weighing 0.041 kg and listed for 63 applications across the D, TD, AQD, TMD, TWD and TID series. It supersedes part number 421012.

🚤 Compatibility

• Engine Family: D, TD, AQD, TMD, TWD, TID, TAMD, MD, THAMD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Standard size, marked Std D
• Supersedes 421012
• 0.041 kg
• 63 applications across the D, TD, AQD, TMD, TWD and TID series
• 6 used per assembly

🔌 Function

Provides the hard replaceable ring the valve closes against, sealing the combustion chamber and conducting heat from the valve head into the cylinder head.

⚠️ Common Signs of Failure

• Low compression, misfire or hard starting on one cylinder
• Valve clearance closing up as the valve sinks into the seat
• Seat face pitted, burnt, notched or recessed
• Seat loose or dropped in its pocket
• Cracks running from the seat pocket

🛠️ Service Notes

• This is the standard size, so if the pocket has already been machined oversize the standard seat will not hold
• Seat renewal is machine-shop work, as the pocket must be cut and the seat pressed to an interference fit
• Reface or renew the valve at the same time and reset clearances after refitting the head

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 466266 → Supersedes 421012

OEM / Related Numbers

• 421012 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TD61A, TD61ACE, TD61AG, TD61AGP, TD61AP, TD61APB, TD61AW
• Volvo Penta TD71A, TD71ACE, TD71AG, TD71AGP, TD71AP, TD71APB, TD71AW
• Volvo Penta AQD70B, AQD70BL, AQD70CL, AQD70D, AQD70C
• Volvo Penta TD70CHC, TD70CRC, TD70G, TD70B, TD70G-83
• Volvo Penta TID71A, TID71AG, TID71AGP, TID71AP, TID71APB
• Volvo Penta TAMD70B, TAMD70E, TAMD70C, TAMD70D
• Volvo Penta TWD710G, TWD710P, TWD710PB, TWD710V
• Volvo Penta D70CHC, D70CRC, D70B
• Volvo Penta MD70B, MD70C
• Volvo Penta TAD730G, TAD730V
• Volvo Penta TAMD71B, TAMD71A
• Volvo Penta TAMD73P-A, TAMD73WJ-A
• Volvo Penta THAMD70C, THAMD70B
• Volvo Penta TID61AG, TID61AGP
• Volvo Penta TMD70C, TMD70B
• Volvo Penta TWD740GE, TWD740VE
• Volvo Penta TAD740GE
• Volvo Penta TAD741GE
• Volvo Penta TAMD72A
• Volvo Penta TD710G
• Volvo Penta TD730VE
• Volvo Penta TID70G
• Volvo Penta TWD731VE