CATElectrical Parts

4678535 Switch Gp-Start — Cat 301

This is a start switch assembly, which acts as the primary electrical interface for initiating the engine's starting sequence. It is manufactured to meet rigorous OEM quality standards, ensuring reliable engagement of the starter motor compared to a worn switch that may fail to engage or cause intermittent starting issues. Observable symptoms of a failing start switch include the inability to crank the engine when the key is turned, or the starter motor engaging erratically.

Switch Gp-Start – Part No 4678535 – CAT Spare Part
Part Specifications
BrandCAT
CategoryElectrical 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

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

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

Part TypeStart Switch Assembly
MaterialPlastic, Metal, Electrical Contacts
ApplicationEngine Starting System
Service LifeReplace as needed based on diagnostics
CompatibilityCAT 301.5, 301.6, 301.7
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom of a failing start switch is the inability to crank the engine when the ignition key is turned to the start position. In some cases, the starter may engage intermittently or not at all. If left unaddressed, the equipment will be rendered inoperable due to the inability to start the engine, leading to significant downtime.

Installation Tip

Ensure the electrical connectors are clean and securely attached to the new switch before installation. Avoid forcing the switch into its mounting bracket, as this can damage the housing or internal components.

Service Note

Inspect the starter motor solenoid and the battery connections for any signs of wear or corrosion.