5-12310-161-0 Engine Crankshaft, Isuzu 4BC2 Engine Core Component
The crankshaft (5-12310-161-0) is the core rotating component of
the Isuzu 4BC2 4-cylinder diesel engine, responsible for converting
the reciprocating motion of the piston into rotational power
output. The crankshaft is precision-cast from high-strength steel
and machined through turning, grinding, and heat treatment
processes. Using this crankshaft effectively improves engine
running smoothness, reduces vibration and abnormal wear, and
extends engine life.
| Part Number | 5-12310-161-0 |
| Type | Crankshaft |
| Applicable Model | Isuzu 4BC2 / 4BC1 Engine |
| Number of Cylinders | 4 |
| Material | High-strength steel |
| Replaceable Part Numbers | 5-12310-161-0, 5123101610 |
| Machining Process | CNC machining, heat treatment, grinding, balancing test |
| Function | Converts the reciprocating motion of the piston into rotational
power, bearing the engine load and ensuring smooth operation. |
Features and Advantages
High-Precision Manufacturing: CNC precision machining and balancing testing ensure smooth
crankshaft rotation and reduce engine vibration.
Stable Power Output: Ensures efficient combustion, reduces mechanical wear, and
improves engine performance.
Wide Applications: Suitable for construction machinery, agricultural machinery, light
trucks, and power generation equipment.
Maintenance-Friendly: Easy installation facilitates daily inspection and maintenance,
reducing downtime risks.
5-12310-161-0 Overall View of the Crankshaft

129908-77010 Front View of Starter Motor

Close-up of crankshaft and connecting rod mating joint

4BC2 Close-up of crankshaft main journal

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Frequently Asked Questions
Q1: What is your main products?
A1: We are specialized in the excavator engine spare parts, for
example Main cylinder block, cylinder head, crankshaft, Engine
assembly, piston, cylinder liner, piston ring, camshaft, connecting
rod, oil pump, water pump, valve series products, movement, etc.
almost all parts of the entire engine.
Q2: Do you test all products before shipping?
A2: Yes, we conduct 100% testing before shipping.
Q3: Which engine models is this Crankshaft compatible with?
A3: This product is designed for specific diesel engine models. If
you can provide the engine model or original part number, we can
confirm compatibility before shipping to avoid incompatibility
issues.
Q4: Can you provide cross-reference information for OEM part
numbers?
A4: Yes, we support original part interchange. Please provide the
original part number, and we will verify the replacement part
accordingly.
Q5: What should I do if there is a problem with the product?
A5: Our products undergo professional testing and are of very
stable quality. If you do find any problems, please contact us. We
have a professional after-sales team to help you solve the problem.
Why Choose Us?
• Over 20 years of experience specializing in construction
machinery, engines, and parts – with stable experience supplying
mainstream brands and models.
• Extensive experience in model matching enables us to provide
customers with accurate parts selection, reducing procurement
risks.
• A long-term, stable, and reliable supply system ensures reliable
product sourcing and meets continuous procurement needs.
• For product information or quotations, our professional team will
provide you with detailed answers immediately upon receiving your
request.