Isuzu 4JB1 Engine Crankshaft OEM Replacement for NHR NQR Excavators

Crankshaft | Isuzu 4JB1 Engine | NHR / NQR / Excavators

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High-quality OEM-grade crankshaft designed for Isuzu 4JB1 engines used in NHR, NQR trucks, and various excavator models. Built for strength, precision, and long-lasting performance.

 

Fits: Isuzu 4JB1 / 4JB1T / Excavators

Replacements: 8-97331-853-0, 8973318530, 8971909282, 8971909281, 8971909280, 897190-9282, IZ-8971909280, IZ-8971909281, IZ-8971909282

$583.00

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The Crankshaft for Isuzu 4JB1 Engine is a precision-machined, heavy-duty component designed to restore engine balance, performance, and durability.
Manufactured to OEM standards, this crankshaft fits perfectly in Isuzu NHR, NQR trucks, and construction excavators powered by the 4JB1 diesel engine.

It features hardened journals and counterweights that provide superior strength, smooth operation, and resistance to wear under high loads. Ideal for complete rebuilds or as a replacement for damaged or worn crankshafts.

Each unit is inspected for dimensional accuracy and oil clearance, ensuring optimal lubrication and reliability in both on-road and off-road conditions.

⚙️ Key Features:

  • OEM-spec crankshaft for Isuzu 4JB1 diesel engines

  • Precision-ground journals for smooth operation

  • Heat-treated for superior strength and durability

  • Balances engine performance and reduces vibration

  • Suitable for both truck and excavator applications

  • Resistant to wear and high engine temperatures

  • Perfect fit and finish for easy installation

🚚 Compatible Applications:

  • Engine Models: Isuzu 4JB1, 4JB1T

  • Vehicle Models: Isuzu NHR, NQR, NKR Trucks, Excavators (Kobelco, Hitachi, and others)

  • Function: Crankshaft – converts linear piston motion to rotational power

  • Fitment: Direct OEM replacement

 

❓ Frequently Asked Questions (FAQ)

1. Is this crankshaft compatible with both 4JB1 and 4JB1T engines?

✅ Yes, this crankshaft is designed for both the naturally aspirated (4JB1) and turbocharged (4JB1T) versions of the Isuzu engine.

2. Which vehicles and machines use the Isuzu 4JB1 engine?

🚚 The 4JB1 engine is commonly found in Isuzu NHR, NKR, NQR trucks, and various excavator models such as Kobelco and Hitachi.

3. What materials is this crankshaft made from?

🧱 It is made from high-strength forged steel, heat-treated and precision-ground for excellent wear resistance and balance.

4. How can I tell if my crankshaft needs replacement?

⚙️ Common signs include knocking noises, metal shavings in oil, low oil pressure, and vibration. Replacing it restores smooth engine operation.

5. Does this crankshaft come balanced and ready to install?

🔧 Yes, each crankshaft is pre-balanced and ready for installation. Professional fitting is recommended to ensure proper alignment.

6. Is this crankshaft suitable for both trucks and excavators?

✅ Absolutely. It’s built to meet OEM standards for both on-road and industrial/off-road equipment using the Isuzu 4JB1 engine.

 

Fits: Isuzu 4JB1 / 4JB1T

Replacements: 8-97331-853-0, 8973318530, 8971909282, 8971909281, 8971909280, 897190-9282, IZ-8971909280, IZ-8971909281, IZ-8971909282

SKU: IEK-154 Category: Tags: , , , , , , ,

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