CATEngine Parts

278-5225 Oil Pressure Sensor — Cat 320D

This is an oil pressure sensor that monitors the engine's lubrication system pressure and transmits this data to the control module. It is built to OEM specifications, providing accurate readings and reliable performance, unlike a faulty sensor that may give erratic or no readings. Operators might observe a fluctuating or illuminated oil pressure warning light on the dashboard, or potentially a complete loss of oil pressure indication when this sensor fails.

Oil Pressure Sensor – Part No 278-5225 – 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 TypeOil Pressure Sensor
MaterialMetal and electronic components
ApplicationEngine lubrication system
Service LifeReplace as needed based on diagnostic testing
CompatibilityCAT C4.4, C6.6, 320D, M31
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing oil pressure sensor may initially cause the oil pressure warning light to flicker intermittently or stay on constantly. If the sensor fails completely, the gauge may read zero or maximum pressure, or no reading at all, leaving the operator unaware of actual lubrication status. This lack of accurate information can lead to operating the engine under dangerously low oil pressure conditions.

Installation Tip

Ensure the engine is completely cool before attempting to remove the old sensor. When installing the new sensor, hand-tighten it first to avoid cross-threading, then use a wrench for the final snugging.

Service Note

Inspect the oil filter and oil level, and consider an oil change if the oil is old or contaminated, as these factors can influence oil pressure readings.