CATEngine Parts

118-3534 Magnetic Switch — Cat C18

This magnetic switch, also known as a starter solenoid, is an electrical component that acts as a high-current switch for the starter motor. It is built to OEM specifications, ensuring reliable engagement and disengagement of the starter motor compared to a sticky or burnt-out original switch. Operators may experience a clicking sound without the engine cranking, or no response at all when attempting to start the engine if this magnetic switch fails.

Magnetic Switch – Part No 118-3534 – CAT Spare Part
Part Specifications
BrandCAT
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 TypeMagnetic Switch (Starter Solenoid)
MaterialMetal and plastic composite
ApplicationStarting system
Service LifeReplace as needed based on testing
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom of a failing magnetic switch is a loud click when the ignition key is turned, but the starter motor does not engage. In some cases, there may be no sound or response from the starting system at all. If left unaddressed, the inability to start the engine will prevent any operation, leading to equipment downtime.

Installation Tip

Ensure the battery terminals are clean and the battery is fully charged before installing the new magnetic switch. Avoid applying excessive force when connecting the electrical terminals, as this can damage the switch body.

Service Note

Test the starter motor and battery voltage when diagnosing or replacing the magnetic switch.