CATEngine Parts

205-6686 Air Inlet Tube Air — Cat 320C 320D

This Air Inlet Tube is a crucial component of the engine's air intake system, directing filtered air from the air cleaner assembly to the turbocharger or intake manifold. Manufactured to precise dimensions, it ensures an unobstructed and efficient flow of air, which is vital for optimal engine performance and fuel economy. A damaged or obstructed inlet tube can lead to reduced engine power, increased exhaust gas temperatures, and potential turbocharger damage. Operators may notice a loss of power, unusual whistling noises from the intake, or increased soot in the exhaust if this tube is compromised.

Air Inlet Tube Air – Part No 205-6686 – 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 Inlet Tube
MaterialHigh-temperature resistant rubber/plastic
ApplicationEngine air intake system
Service LifeReplace if cracked, collapsed, or leaking
CompatibilityCAT 3066, C6.4, 320C, 320D
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing air inlet tube may initially cause a noticeable decrease in engine power and a whistling or sucking sound from the engine bay. If left unaddressed, the engine may ingest unfiltered air, leading to internal component wear, and the turbocharger could be starved of sufficient air, causing it to operate inefficiently or fail. Continued operation with a compromised inlet tube risks significant engine performance degradation and potential turbocharger damage.

Installation Tip

Ensure the mating surfaces on both the air cleaner outlet and the turbocharger inlet are perfectly clean before installing the new tube. Avoid over-tightening clamps, as this can deform the tube or damage the sealing surfaces.

Service Note

Inspect the air cleaner element and the turbocharger compressor wheel for any signs of damage or excessive debris when replacing the air inlet tube.