CATEngine Parts

4n-6954 Air Compressor Group — Cat 3406

This is a complete air compressor group assembly responsible for generating compressed air for the vehicle's braking system and other pneumatic functions. It is built to meet rigorous OEM standards for durability and consistent air output, unlike a worn compressor that may produce insufficient pressure. Operators might observe a slow-building air pressure gauge, leaks from the compressor, or frequent activation of the air dryer when this unit is failing.

Air Compressor Group – Part No 4n-6954 – 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 Group
MaterialCast iron and steel alloy
ApplicationEngine air system / Braking system
Service LifeReplace based on performance testing
CompatibilityCAT 4N-6954
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing air compressor may initially present as a slow build-up of air pressure in the brake system. If left unaddressed, this can lead to reduced braking effectiveness and potential air leaks, causing the compressor to work harder and overheat. The ultimate consequence is a loss of air pressure, compromising the safety and operational capability of the equipment.

Installation Tip

Before installation, thoroughly clean the mounting surfaces and ensure all air lines are free of debris or damage. Avoid overtightening mounting bolts, which can warp the compressor housing.

Service Note

When replacing the air compressor, it is advisable to inspect the air dryer, air tanks, and all associated air lines for wear or contamination.