CATEngine Parts

420-1781 Air Filter — Cat C15 C18

This air filter is a vital engine component designed to remove harmful contaminants from the intake air before it enters the combustion chamber. It is manufactured to strict OEM standards, ensuring efficient filtration and optimal airflow, unlike a clogged or damaged filter that restricts air supply. Operators may observe a noticeable decrease in engine power, increased fuel consumption, or black smoke from the exhaust when this air filter is compromised.

Air Filter – Part No 420-1781 – 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 TypeAir Filter
MaterialCellulose and synthetic fiber media
ApplicationEngine intake air system
Service LifeReplace every 500-1000 operating hours or as indicated by restriction indicator
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a clogged air filter is often a gradual loss of engine power and responsiveness. If ignored, the engine may start to run rough, consume more fuel, and emit black exhaust smoke as it struggles to draw sufficient air. Prolonged operation with a severely restricted air filter can lead to premature engine wear and increased emissions.

Installation Tip

Ensure the air filter housing is completely clean and free of debris before installing the new filter. Make sure the filter is seated properly and the housing seals are intact to prevent unfiltered air bypass.

Service Note

When replacing the air filter, it is advisable to inspect the turbocharger intake and piping for any signs of oil or debris.