CATEngine Parts

4N0685 Camshaft Bushing — Cat 16G 16H NA

This is a CAT Camshaft Bushing, a precision-engineered bearing that supports the camshaft within the engine block, ensuring smooth rotation and proper valve timing. Manufactured to meet high wear-resistance standards, it offers superior longevity compared to a worn bushing that can lead to excessive camshaft end-play or noise. Operators might notice increased engine noise, particularly a knocking sound from the engine block, or a significant loss of engine power if this bushing fails.

Camshaft Bushing – Part No 4N0685 – 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 TypeCamshaft Bushing
MaterialBronze alloy
ApplicationEngine camshaft support
Service LifeReplace during engine overhaul or if worn
CompatibilityCTP aftermarket replacement
ConditionNew — CTP aftermarket

Failure Symptoms

The first indication of a failing camshaft bushing is often an increase in engine noise, such as a distinct knocking sound originating from the engine block. If ignored, this can lead to accelerated wear on the camshaft and crankshaft, potentially causing improper valve timing and reduced engine performance. The ultimate risk is severe internal engine damage requiring a complete overhaul.

Installation Tip

Ensure the camshaft bearing bore is meticulously cleaned and inspected for any imperfections before pressing in the new bushing. Avoid using excessive force or improper tools when pressing the bushing, as this can damage the bushing or the engine block.

Service Note

When replacing camshaft bushings, it is crucial to inspect the camshaft journals for wear and to check crankshaft bearings for play.