VolvoEngine Parts

20857578 Valve Yoke — Volvo FH12 FH16

This valve yoke is a critical component in the engine's valvetrain system, ensuring precise timing and lift of the engine valves. It is manufactured to meet stringent OEM quality standards, offering superior durability and wear resistance compared to a worn or damaged yoke. Operators may notice rough idling, a loss of engine power, or unusual ticking noises from the engine if this part begins to fail.

Valve Yoke – Part No 20857578 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeValve Yoke
MaterialForged steel
ApplicationEngine valvetrain
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing valve yoke can include intermittent engine misfires or a slight decrease in engine performance. If left unaddressed, the yoke can wear unevenly, leading to persistent rough idling and potential valve train noise. Continued operation with a damaged yoke risks improper valve timing and potential damage to other valvetrain components.

Installation Tip

Ensure the camshaft lobe and rocker arm surfaces are clean and free of debris before installation. Avoid forcing the yoke onto the valve stem, as this can damage the stem or the yoke itself.

Service Note

Inspect the camshaft, rocker arms, and valve springs for wear or damage when replacing the valve yoke.