Description
Product Overview
Part Name: Engine Crankshaft
Part Numbers: 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. Engineered to match OEM crankshaft dimensions, bearing specifications and counterweight geometry for Isuzu 3.3L commercial diesel platforms.
Configuration: Heavy-duty forged crankshaft featuring hardened and polished bearing journals, balanced counterweights, precision-machined oil passages and OE-style mounting geometry for stable rotation and long service life under demanding conditions.
Function: Converts piston movement into rotational torque, delivering smooth engine operation, reliable timing accuracy, strong torque output and consistent combustion performance across Isuzu’s 3.3L engine family.
Technical Specifications
Type: Diesel engine crankshaft
Material: Heat-treated forged alloy steel with hardened journal surfaces
Application: Fits Isuzu 4BC1, 4BC2 and DB33 engines in NKR, NPR, KT and TLD trucks using crankshaft references 5-12310-161-0 / 5123101610
Cross-Reference: Interchangeable with crankshafts sharing identical journal sizes, stroke length, counterweight design and mounting pattern within the 4BC/DB33 engine series
Installation: Recommended during major engine overhaul or when experiencing bearing wear, vibration, scoring, imbalance, oil-pressure problems or bottom-end damage
Service Interval: Replace during engine rebuilds or when lubrication failure, wear, or cracks affect performance
Delivery & Availability
Stock Options: Crankshafts available in ready stock
Delivery Time: 3–7 days internationally
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