Mercedes-Benz OM904 Crankshaft

The OM904 crankshaft is specially developed for Mercedes-Benz OM904 inline 4-cylinder medium-duty diesel engines, covering two mainstream specifications of 98mm and 103mm. It strictly follows original factory dimensional standards and process requirements, with precise journal tolerance, excellent dynamic balance performance and strong impact resistance. It is widely applicable to OM904 engines compliant with Euro II to Euro V emission standards, adapting to multiple working scenarios such as urban distribution vehicles and light engineering equipment.

Manufactured with high-quality alloy steel forging and multi-channel heat treatment process, the crankshaft effectively improves overall rigidity and fatigue resistance. The optimized journal fillet and counterweight balance design reduces operating vibration and friction loss, ensuring long-term stable operation under high load and high-speed working conditions, and lowering the overall failure rate of the engine power system.

Product Advantages

High Structural Strength & Durability

• Made of high-strength alloy forged steel, with integral forming structure, which effectively resists high-pressure impact and torque load during engine operation, avoiding deformation and fracture.
• Two mainstream specifications (98mm / 103mm) are complete, fully matching different displacement and power versions of OM904 engine, with high compatibility.

Precision Process & Low Loss

• Precision grinding of spindle neck and connecting rod neck, with ultra-small dimensional tolerance and smooth surface, reducing shaft wear and oil consumption.
• Professional dynamic balance calibration, effectively reducing engine vibration and noise, improving overall operation stability and comfort.
• Optimized fillet reinforcement and surface hardening treatment, greatly extending service life and reducing later maintenance frequency and cost.

Standard Matching & Easy Installation

• Produced in strict accordance with original factory parameters, with standard mounting size and reserved hole position, realizing direct replacement and plug-and-play installation.
• Adaptable to turbocharged intercooled OM904 engine models, compatible with multiple emission systems and post-processing configurations.
• Stable product consistency, complete factory inspection procedures, reliable quality, suitable for aftermarket replacement and engine assembly supporting.

Technical Specifications