VolvoEngine Parts

20560843 — Vacuum Switch 20409365 20560843 For Volvo Engine Tad570 Tad840Ge Truck Fh Bus B5Lh B8L

This vacuum switch monitors and regulates air pressure within the engine's intake system, crucial for optimal fuel combustion and emissions control. It is manufactured to stringent Volvo standards, ensuring superior durability and performance compared to worn or failing switches that may exhibit signs of corrosion or physical damage. Operators may notice erratic engine idling, a decrease in power, or the illumination of the check engine light when this component begins to fail.

Vacuum Switch 20409365 20560843 For Volvo Engine Tad570 Tad840Ge Truck Fh Bus B5Lh B8L – Part No 20560843 – 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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Part TypeEngine Vacuum Switch
MaterialHigh-grade plastic and metal components
ApplicationEngine intake system pressure monitoring
Service LifeReplace as needed based on diagnostic codes
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

An initial sign of failure may be a rough or unstable idle speed. If left unaddressed, the engine may experience a noticeable loss of power and reduced fuel efficiency. Continued operation with a faulty vacuum switch can lead to increased emissions and potential engine performance issues.

Installation Tip

Ensure the electrical connector is clean and free of corrosion before plugging it in. Avoid overtightening the switch into its mounting port, as this can damage the threads or the switch housing.

Service Note

Inspect all associated vacuum hoses and the engine wiring harness for any signs of damage or wear.