CATFilters

1304678 Filter Element-Air — Cat 311C 311D LRR

This air filter element is engineered to prevent airborne contaminants from entering the engine's intake system, thereby protecting vital internal components from premature wear. It adheres to strict filtration standards, offering superior dust and debris capture compared to a worn filter that allows harmful particles to pass and restricts airflow. Operators may observe a loss of engine power, increased black smoke, and higher fuel consumption when this filter begins to degrade.

Filter Element-Air – Part No 1304678 – CAT Spare Part
Part Specifications
BrandCAT
CategoryFilters
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

Never run an engine without a filter — even briefly causes abrasive damage. Pre-fill fuel filters with clean fuel before fitting to reduce prime time. Replace O-rings on filter housings every second service. Record change dates on filter housing.

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

Part TypeAir Filter Element
MaterialHigh-efficiency filter media
ApplicationEngine air intake system
Service LifeReplace every 500 hrs or annually
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing air filter element is a noticeable reduction in engine power and potentially increased exhaust smoke. If ignored, the engine's fuel efficiency will decline, and it may start to run roughly. Continued operation with a compromised filter risks accelerated wear on engine components.

Installation Tip

Before installing the new element, thoroughly clean the inside of the air filter housing to remove any accumulated dirt or debris. Ensure the new element seats correctly to create a proper seal.

Service Note

Check the integrity of the air intake piping and any associated seals for damage or leaks when replacing the air filter element.