VolvoElectrical Parts

8157766 — 4 Pcs Master Battery Disconnect Isolator Key 8157766 For Volvo Truck A20C A25C A30C A35C A40 Da25D Da30D A35D A40D A25D

This is a master battery disconnect switch key, essential for safely isolating the vehicle's electrical system. It ensures a secure connection and reliable operation, preventing accidental power surges unlike a worn or damaged key that might not engage properly. Operators may experience intermittent power loss or an inability to start the engine if the key mechanism is failing.

4 Pcs Master Battery Disconnect Isolator Key 8157766 For Volvo Truck A20C A25C A30C A35C A40 Da25D Da30D A35D A40D A25D – Part No 8157766 – Volvo Spare Part
Part Specifications
BrandVolvo
CategorySpare 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 TypeBattery Disconnect Key
MaterialMetal and plastic
ApplicationElectrical system isolation
Service LifeReplace as needed for safety
CompatibilityVolvo A20C, A25C, A30C, A35C, A40, DA25D, DA30D, A35D, A40D, A25D
ConditionNew — OEM specification aftermarket

Failure Symptoms

A worn or damaged disconnect key may become difficult to turn or fail to fully engage the switch, leading to intermittent electrical power. If the key is lost or broken, the electrical system cannot be safely isolated. This poses a risk during maintenance, potentially leading to electrical shorts or accidental equipment startup.

Installation Tip

Before removing the old key, ensure the disconnect switch is in the 'ON' position to avoid accidental power loss. Insert the new key and turn it firmly to ensure full engagement with the switch mechanism.

Service Note

Inspect the battery terminals and cables for corrosion and ensure they are clean and tight when reconnecting the battery.