CATFilters

522-0793-522-0794 Filter — Cat 2021D HIN2021D

This filter is designed to remove impurities from the air intake system, ensuring only clean air reaches the engine combustion chambers. It is built to precise specifications, offering robust filtration performance that surpasses that of a worn or damaged filter. Operators may notice a reduction in engine power, increased fuel consumption, or black smoke from the exhaust if this filter is compromised.

Filter – Part No 522-0793-522-0794 – 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
MaterialPleated paper media
ApplicationEngine air intake system
Service LifeReplace every 500 hrs or annually
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A clogged air filter can initially lead to a noticeable decrease in engine power and responsiveness. If left unaddressed, the engine may start to run rough, consume more fuel, and produce excessive exhaust smoke. Continued operation with a severely restricted air filter can cause premature wear on engine components and potentially lead to internal engine damage.

Installation Tip

Ensure the air filter housing is completely clean inside before installing the new filter to prevent any debris from being drawn into the engine. Make sure the filter is seated correctly and the housing is sealed tightly to prevent unfiltered air bypass.

Service Note

Inspect the intake manifold and turbocharger (if equipped) for any signs of oil contamination or excessive soot buildup.