4HE1 Crankshaft 8-94396-737-3 8-97112981-0 for Isuzu Engine

Product Details

Product Overview

This high-precision Isuzu 4HE1 crankshaft is a critical engine component engineered to restore the rotational balance and power output of your diesel engine. Identified by the genuine OEM part numbers 8-94396-737-3 and 8-97112981-0, this crankshaft is specifically designed for the Isuzu 4HE1 engine platform.

Manufactured to strict OEM dimensional standards, this crankshaft serves as a direct replacement for worn or damaged units in a variety of heavy machinery. It is commonly used in Isuzu-powered forklifts, excavators, loaders, and trucks, ensuring a reliable return to operational performance. This component is an essential part of any major engine overhaul or rebuild for the 4HE1 series.

Key Features & Benefits

• Exact OEM Fitment: Produced to the precise specifications of the original Isuzu part numbers (8-94396-737-3 / 8-97112981-0), guaranteeing a direct bolt-in installation without modification.
• Durable Construction: Forged from high-strength alloy steel, this crankshaft is designed to withstand the extreme torsional stress and high RPMs of turbocharged diesel engines.
• Precision Machining: All main journals and crankpins are ground to a mirror-like finish with tight tolerances, reducing friction and ensuring long bearing life.
• Dynamic Balance: Each unit is dynamically balanced to minimize vibration, leading to smoother engine operation, reduced noise, and extended engine life.
• Induction Hardened: The fillet areas and journal surfaces are induction hardened for superior wear resistance and durability under heavy load conditions.
• Rigorous Quality Control: All critical dimensions (runout, taper, and size) are verified using advanced CMM (Coordinate Measuring Machine) equipment to ensure 100% compliance with OEM standards.

Technical Specifications

OEM Cross-Reference

This crankshaft is a direct replacement for the following genuine Isuzu part numbers:

• 8-94396-737-3 (Primary OEM Number)
• 8-97112981-0 (Alternative OEM Number)
• 8-94396-737-1 (Superseded Number)
• 8-97112981-1 (Superseded Number)

Note: Always verify the exact casting number on your old part to ensure compatibility.

Compatibility

This crankshaft is specifically designed for the Isuzu 4HE1 diesel engine. It is commonly used for the following applications:

• Forklifts: TCM, Nissan, and other heavy-duty forklift models powered by the 4HE1 engine.
• Excavators: Mini and mid-size excavators utilizing the Isuzu 4HE1 powerplant.
• Loaders & Bulldozers: Compact wheel loaders and dozers with Isuzu engine fitment.
• Trucks & Buses: Various Isuzu Elf (N-Series) trucks and medium-duty buses.

Global Supply & Distribution

We maintain a robust global supply chain to serve B2B clients across the world. Our export hub in Guangdong, China, allows for efficient logistics to major international ports.

• Markets Served: North America, Europe, Southeast Asia, Middle East, Africa, and Oceania.
• Shipping: We offer fast and reliable shipping via sea freight (FOB, CIF, CNF) and air freight (DDP, DAP) for urgent orders.
• Logistics: Expedited delivery to major ports including Los Angeles, Rotterdam, Dubai, and Singapore.
• Compliance: All parts are exported in full compliance with international trade regulations and packaging standards to prevent damage in transit.

Quality Assurance

We are committed to providing industrial-grade components that meet or exceed OEM performance. Our quality management system ensures every crankshaft is reliable.

• Testing: Each unit undergoes a Machinery Test Report and Video Outgoing Inspection before shipment.
• Certification: Parts are manufactured in ISO-compliant facilities with strict process control.
• Warranty: We provide a 6-month warranty against manufacturing defects in material and workmanship.

FAQ

Q: How can I confirm this crankshaft will fit my Isuzu 4HE1 engine?
A: The primary identifiers are the OEM part numbers 8-94396-737-3 and 8-97112981-0. We recommend checking the casting number located on the side of your old crankshaft (near the flywheel flange). If it matches either of these numbers, this is a direct replacement. If your engine block has been line-bored, you may require undersize bearings (e.g., 0.25mm or 0.50mm); this standard size crankshaft is for standard bearing shells.

Q: Does this crankshaft come with bearings and seals?
A: This listing is for the crankshaft only. It does not include main bearings, thrust washers, or rear main seals. For a complete rebuild, you will need to purchase a corresponding bearing set (standard or undersize) and a crankshaft seal kit separately. We recommend replacing these components simultaneously to ensure proper oil clearance.

Q: What is the recommended installation procedure for this crankshaft?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: 1) Thoroughly clean the engine block and main bearing saddles. 2) Lubricate all bearing surfaces with assembly lube. 3) Torque the main bearing cap bolts to the factory specification (typically in a specific sequence and multiple stages). 4) Verify crankshaft end-play (thrust clearance) using a dial indicator. 5) After installation, rotate the crankshaft by hand to ensure it spins freely without binding.