CATEngine Parts

9N6221 Crankshaft W/Gear — Cat 225 3208

This crankshaft with gear is a core rotating component within the engine, converting linear piston motion into rotational force to power the equipment. Manufactured to precise specifications, it ensures smooth operation and power transfer, unlike a worn crankshaft which can lead to vibrations and reduced output. Operators may notice increased engine vibration, abnormal noises from the crankcase, or a loss of engine power when this part is failing.

Crankshaft W/Gear – Part No 9N6221 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

T.', };

Related CAT Parts

From the same category — may also be needed

134-5402-20r-3623
Turbo Utw8302 Turbocharger
2590628
Engine Parts Component
209-5582
Solenoid Valve
2900017
Piston
2h-2330
Bushing
177-4754
Fuel Injector

Browse all CAT Engine Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 with Gear
MaterialForged Steel
ApplicationEngine Crankcase
Service LifeReplace based on engine condition and hours
CompatibilityCAT 225, 3208, 613B, 613C, FB221
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Increased engine vibration and unusual knocking sounds originating from the crankcase are early indicators of a failing crankshaft. If ignored, these issues can escalate, potentially leading to bearing failure and severe damage to the engine block. Continued operation risks catastrophic mechanical failure within the engine.

Installation Tip

Ensure all crankshaft bearing surfaces are meticulously cleaned and properly lubricated with assembly lube before installation. Avoid dropping or striking the crankshaft during handling, as this can cause micro-fractures or damage the bearing journals.

Service Note

When replacing the crankshaft, inspect connecting rod bearings, main bearings, and the engine oil pump for wear.