CATFilters

1029387 Element Assem. (Second- Ary) — Cat 631C 983

This secondary air filter element assembly is crucial for capturing fine particulate matter that may bypass the primary filter, safeguarding the engine's internal components. It is manufactured to meet rigorous filtration standards, providing a higher level of protection than a worn or damaged assembly that allows finer contaminants to pass. Operators may notice increased exhaust smoke, reduced engine power, or unusual engine noises when this component begins to fail.

Element Assem. (Second- Ary) – Part No 1029387 – 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 TypeSecondary Air Filter Assembly
MaterialPaper media and metal housing
ApplicationEngine air intake system (secondary stage)
Service LifeReplace every 1,000 hrs or annually
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing secondary air filter assembly include a slight increase in exhaust smoke and a subtle reduction in engine responsiveness. If ignored, the engine may begin to run rough, and fuel efficiency will noticeably decrease. The ultimate consequence of a compromised secondary filter is accelerated wear on internal engine components.

Installation Tip

Ensure that the sealing surfaces on both the filter housing and the engine are clean and free of debris before installation. Avoid forcing the assembly into place, as this could damage the filter media or housing.

Service Note

Inspect the primary air filter and the air intake system for any signs of damage or leaks when servicing the secondary air filter assembly.