CATEngine Parts

535-6924 Diesel Exhaust Fluid Level Sensor — Cat

This Diesel Exhaust Fluid (DEF) Level Sensor accurately monitors the amount of DEF in the vehicle's tank, crucial for the Selective Catalytic Reduction (SCR) system's proper function. Manufactured to precise specifications, it ensures reliable readings, unlike a faulty sensor that provides erratic or incorrect data. Operators may observe a DEF system warning light illuminating on the dashboard, a reduction in engine power (derate), or the inability to restart the engine after shutdown if this sensor fails.

Diesel Exhaust Fluid Level Sensor – Part No 535-6924 – 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 TypeDEF Level Sensor
MaterialPlastic, Stainless Steel
ApplicationDEF Tank Level Monitoring
Service LifeReplace as needed based on diagnostic codes or failure
CompatibilityCAT D2, D1, D3 Tractors, 320 Excavator
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom of a failing DEF level sensor is the illumination of a DEF system warning light on the instrument panel. If ignored, the system may report an incorrect DEF level, leading to engine derate (reduced power) to comply with emissions regulations. The ultimate consequence can be the inability to restart the engine after it has been shut down, preventing operation until the issue is resolved.

Installation Tip

Ensure the DEF tank is completely empty before attempting to remove the old sensor to prevent spillage. Carefully align the new sensor with the tank opening to avoid cross-threading or damaging the mounting seal.

Service Note

Inspect the DEF tank for any sediment or contamination and clean if necessary when replacing the DEF level sensor.