Description
Product Overview
Part Name: Engine Crankshaft
Part Number: 5-12310-161-0 / 5123101610
Vehicle Compatibility: Suitable for Isuzu NKR, Isuzu NPR, Isuzu KT, and Isuzu TLD trucks equipped with the 4BC1, 4BC2 or DB33 3.3L diesel engines, manufactured between 1985–2024. Ensures correct fitment for OEM crankshaft specifications in Isuzu 3.3L commercial diesel platforms.
Configuration: Precision-forged crankshaft featuring hardened and polished bearing journals, balanced counterweights, optimized oil passages and OE-matched geometry to support long-term engine durability under heavy-duty operating conditions.
Function: Converts piston motion into rotational torque, ensuring smooth engine operation, stable timing accuracy, reliable power delivery and consistent combustion performance across Isuzu’s 3.3L diesel engine family.
Technical Specifications
Type: Diesel engine crankshaft
Material: High-strength forged alloy steel with hardened bearing surfaces
Application: Fits Isuzu 4BC1, 4BC2 and DB33 engines in NKR, NPR, KT and TLD model trucks using crankshaft references 5-12310-161-0 / 5123101610
Cross-Reference: Matches crankshafts sharing equivalent stroke length, journal sizes, counterweight shape and mounting geometry within the 4BC/DB33 engine series
Installation: Replace during major engine overhaul or when vibration, worn journals, scoring, imbalance, oil-pressure issues or cracking appear
Service Interval: Recommended during bottom-end rebuilds or when wear or lubrication failure impacts performance
Delivery & Availability
Stock Options: Crankshafts available in ready stock
Delivery Time: 3–7 days internationally
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