CATEngine Parts

191-8304 Speed Sensor — Cat

This part is a speed sensor that monitors the rotational speed of the engine's crankshaft or camshaft, providing vital data to the engine control module. It is constructed from durable materials to withstand engine bay temperatures and vibrations, ensuring accurate readings unlike a faulty sensor which may provide erratic or no signal. Operators might observe a check engine light illumination, erratic tachometer readings, or engine stalling when this sensor malfunctions.

Speed Sensor – Part No 191-8304 – 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 TypeSpeed Sensor
MaterialPlastic and metal
ApplicationEngine speed monitoring
Service LifeReplace as needed based on diagnostic codes
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing speed sensor may initially cause intermittent issues like a fluctuating tachometer or a brief engine hesitation. If ignored, the engine may begin to stall unexpectedly or refuse to start altogether, potentially leaving the equipment inoperable. Continued operation without a functioning speed sensor can lead to ECM errors and potential damage to other engine components.

Installation Tip

Ensure the sensor mounting surface is clean and free of debris before installation to guarantee a proper seal. Do not use excessive force when threading the sensor into its bore.

Service Note

Check the wiring harness and connector for any signs of damage or corrosion when replacing the speed sensor.