CATExhaust & Turbo

4n6639 Excavators & Construction Equipment — Cat 3116 910

This turbocharger component is a critical part of the exhaust system, responsible for forcing compressed air into the engine cylinders to increase power output. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to a worn or damaged unit. Operators may notice a significant loss of engine power, excessive black smoke from the exhaust, or unusual whining noises when this component begins to fail.

Excavators & Construction Equipment – Part No 4n6639 – CAT Spare Part
Part Specifications
BrandCAT
CategoryExhaust & Turbo
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

Allow turbo to idle 2–3 minutes before shutdown — this circulates oil through bearings and prevents coking. Check oil feed and drain lines for blockages before fitting new turbo. Replace oil and filter when fitting new turbo — old oil contains metal particles.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeTurbocharger Component
MaterialHigh-temperature alloy steel
ApplicationEngine exhaust and intake system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure may include a noticeable decrease in engine power and acceleration. If ignored, the turbocharger may begin to produce loud whistling or grinding noises, and exhaust smoke can become progressively darker. Continued operation with a failing turbocharger can lead to increased oil consumption and potential engine damage.

Installation Tip

Ensure the oil supply and drain lines are clean and free of obstructions before installation. Avoid overtightening the mounting bolts, as this can distort the housing and lead to leaks.

Service Note

Inspect the exhaust manifold, intake piping, and air filter for any related issues during replacement.