CATEngine Parts

2827955 Gear- Crankshaft — Cat 12M 2 12M 3

This is a high-strength crankshaft gear, a vital component within the engine's timing system that drives the crankshaft. It ensures precise synchronization between the crankshaft and camshafts for optimal valve timing and engine performance, manufactured to meet rigorous OEM specifications for durability and tooth profile. A worn or damaged crankshaft gear can cause rough engine running, misfires, or a complete loss of engine timing, potentially leading to internal engine damage.

Gear- Crankshaft – Part No 2827955 – 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 TypeCrankshaft Gear
MaterialHardened Steel
ApplicationEngine Timing System
Service LifeReplace every 8,000 hrs or as needed
CompatibilityCAT 12M2, 12M3, 140M2, 140M3
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of a worn crankshaft gear may include intermittent rough idling or a slight loss of engine smoothness. If ignored, the gear teeth can wear down further, leading to inaccurate valve timing and potential misfires. The worst-case scenario is the gear tooth failure, causing a complete loss of engine timing and severe internal engine damage.

Installation Tip

Ensure the crankshaft and camshaft timing marks are precisely aligned before installing the new gear. Never attempt to force the gear onto the shaft; it should slide on smoothly if the correct part is used and the shaft is clean.

Service Note

Inspect the camshaft gear and timing chain/belt for wear or damage when replacing the crankshaft gear.