CATEngine Parts

4p-5433 Excavators & Dozers — Cat 950

This air compressor assembly is responsible for generating compressed air used to power various pneumatic systems within the equipment, such as brakes or auxiliary functions. It is built to meet OEM quality standards, providing reliable air pressure compared to a worn unit with leaking seals or a damaged drive mechanism. Operators may notice issues with brake performance, air-powered tool operation, or a continuous hissing sound if this compressor is failing.

Excavators & Dozers – Part No 4p-5433 – 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 Compressor Assembly
MaterialCast iron, steel, rubber seals
ApplicationEngine pneumatic system
Service LifeReplace based on diagnostic testing and performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing air compressor include a longer-than-normal time to build air pressure or a continuous air leak sound. If ignored, the system may lose air pressure intermittently, affecting brake performance. The worst consequence is the inability to build sufficient air pressure for safe operation of pneumatic systems.

Installation Tip

Ensure the drive belt is properly tensioned after installation, as a loose belt will cause slippage and inefficient operation. Do not overtighten the mounting bolts, as this can distort the compressor housing.

Service Note

Inspect and service or replace the air dryer and check all air tanks and lines for leaks when installing a new air compressor.