CATEngine Parts

213-3539 Oxygen Sensor — Cat 3408

This oxygen sensor monitors the amount of oxygen in the exhaust gases, providing crucial data to the engine control unit (ECU) for optimizing fuel combustion and emissions. It is manufactured to meet stringent OEM specifications, ensuring accurate readings that are vital for efficient engine performance and compliance with environmental regulations. Operators may observe a decrease in fuel economy, rough idling, or the illumination of the 'Check Engine' light when this sensor malfunctions.

Oxygen Sensor – Part No 213-3539 – 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 TypeOxygen Sensor (O2 Sensor)
MaterialCeramic, Stainless Steel
ApplicationExhaust System
Service LifeReplace every 100,000 miles or as needed
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A primary symptom of a failing oxygen sensor is a noticeable drop in fuel efficiency, often accompanied by a rougher engine idle. If left unaddressed, the engine may run with an incorrect air-fuel mixture, leading to increased emissions and potential damage to the catalytic converter. Continued operation can result in poor engine performance and costly repairs.

Installation Tip

Apply anti-seize compound to the threads of the new sensor before installation to prevent seizing in the exhaust manifold. Ensure the sensor is tightened to the manufacturer's specified torque to avoid leaks or damage.

Service Note

When replacing the oxygen sensor, it is advisable to inspect the exhaust system for leaks and check the condition of the wiring harness connected to the sensor.