ALFA ROMEO,FIAT,JEEP Fiat 2.2 JTD Crankshaft – OE 71779412

Overview

This is a new Fiat 2.2 JTD crankshaft listed for ALFA ROMEO,FIAT,JEEP applications, carrying OE references 71779412. It suits rebuild and repair work on engines with damaged journals, thrust surfaces or a broken crank, and is supplied as a single unit.

Engine application

• Engine code: Fiat 2.2 JTD
• Listed for: ALFA ROMEO,FIAT,JEEP
• OE references: 71779412

How this part fails

Crankshaft damage is usually a consequence rather than a cause: a spun bearing, a blocked oil way, detonation or a failed oil pump takes the journals out of tolerance. The usual signs are a rhythmic knock that follows engine speed, dropping oil pressure, and metal paste or flakes in the oil filter. Journal scoring beyond the undersize limits means replacement rather than regrinding.

Specifications

Fitment checks before ordering

Do not order on vehicle model alone. Check the engine code plate reads Fiat 2.2 JTD, then match the OE number stamped or printed on your existing crankshaft against the references listed here.

Rebuild notes

Before assembly, measure every main and big-end journal for diameter, taper and ovality, and check thrust and runout. Bearings must match the journals as supplied. It is normal practice to renew the rear seal, flush the oil galleries and inspect the oil pump at the same time, then verify clearances with plastigauge during assembly.

What is included

One crankshaft is supplied. Rebuilding an engine also requires bearings, seals and fasteners, which are not part of this listing.

Availability and warranty

The listing does not publish a stock quantity, so availability is confirmed by the supplier at order rather than shown here. The current Alibaba listing quotes delivery by Dec 28. The manufacturer states a 1 year or 10,000 KM, whichever comes first warranty on this listing.