CATFilters

8N9803 Element-Primary — Cat 120B 120G

This is a primary engine air filter element designed to capture airborne particles before they enter the engine's combustion chambers. It is manufactured to high filtration standards, ensuring superior air quality compared to a torn or clogged filter. Operators may observe a noticeable decrease in engine power, increased black smoke from the exhaust, or premature engine wear if this filter is compromised.

Element-Primary – Part No 8N9803 – 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 TypePrimary Air Filter Element
MaterialCellulose and synthetic fiber blend
ApplicationEngine air intake system
Service LifeReplace every 1,000 hours or as needed based on operating conditions
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing primary air filter may initially present as a slight reduction in engine responsiveness. As it becomes more clogged, engine power will noticeably decrease, and fuel efficiency will suffer. If left unaddressed, excessive soot buildup can occur, leading to accelerated wear on engine internals.

Installation Tip

Always clean the air filter housing thoroughly before installing a new element to prevent dirt from bypassing the filter. Ensure the new filter seats correctly and the housing seals tightly.

Service Note

Inspect the secondary air filter and the air intake piping for any leaks or damage when replacing the primary air filter element.