Isuzu For Isuzu 1985-1995 4ZD1 2.3l 4zd1 Crankshaft 8-94136-164-0 For Isuzu Pickup Diesel Engine Parts – OEM 8-94136-164-0

Product Overview: This precision-machined engine crankshaft is a direct-fit replacement component engineered for Isuzu 4ZD1 engines. It is produced to original equipment tolerances and is intended to replace a worn, bent, cracked or journal-damaged original crankshaft without modification.

Key Features: The crankshaft is CNC-machined on precision centres to hold main and rod journal diameters, fillet radii, stroke and end-float within original equipment limits. Hardened, ground and micro-polished journals provide the surface quality required for stable oil pressure and long bearing life. Consistent production tolerances mean the part can be fitted without the trial-and-error often associated with low-grade replacements. Fillet rolling at the journal-to-web transitions improves fatigue resistance in the areas most prone to cracking.

Vehicle Compatibility: Compatible applications include Isuzu, with listed fitment across 4ZD1. Listed production years include 1985-1995. If the vehicle is not listed, compare the engine code and original part number to identify whether the same component is used.

Specifications: Key specifications: engine code 4ZD1; material high-grade alloy; size STD; condition New; warranty 12 Months. The part is intended for replacement and repair use and is not a performance upgrade unless expressly described as such. The component is a new part rather than a reconditioned exchange unit.

OEM / Reference Numbers: Reference numbers for this part include 8-94136-164-0 and 8-94146-320-2.

Applications: Applications include complete engine rebuilds, preventative bottom-end renewal and repair of units damaged by lubrication failure. Holding a standard-size unit in stock helps workshops complete rebuilds without waiting for machining or exchange parts. It suits passenger cars, light commercial vehicles and, where listed, industrial or agricultural machinery powered by the relevant engine.

Benefits / Replacement Information: Fitting this part corrects bottom-end noise and vibration, restores oil pressure and returns the engine to reliable service. Because the shaft is supplied in standard size and ready to fit, it avoids the lead time and expense of re-grinding an original unit. Correct balance and journal geometry also reduce the load on the bearings and oil pump, which supports longer service intervals for the rebuilt engine.

Installation or Fitment Notes: Prior to installation, verify the reference number, measure all journals and inspect the block and bearing bores for wear or distortion. Install with new bearings, confirm oil clearance using plastigauge, and tighten the main and rod caps to factory torque and sequence. Confirm thrust clearance, prime the lubrication circuit, and observe a careful running-in period with fresh oil. Keep the journals protected until the moment of assembly, and handle the shaft only with clean gloves to avoid surface damage.