Mitsubishi S4L2 Engine Camshaft 31A05-00203 for Excavator & Construction Machinery

Product Details

Product Overview

This high-precision camshaft, identified by part number 31A05-00203, is specifically engineered for the Mitsubishi S4L2 diesel engine. As a critical component of the valve train, this camshaft controls the precise opening and closing of engine valves, directly influencing combustion efficiency, power output, and overall engine durability.

Manufactured to meet OEM specifications, this replacement camshaft is designed for use in a variety of heavy-duty applications where the Mitsubishi S4L2 engine is commonly found, including excavators, bulldozers, forklifts, loaders, trucks, and buses. It provides a reliable, direct-fit solution for engine overhauls and repairs, ensuring that your machinery returns to optimal operational performance.

Key Features & Benefits

• OEM Specification Fitment: Manufactured to the exact dimensions and material hardness of the original Mitsubishi part (31A05-00203), ensuring a direct, bolt-on replacement without modification.
• Enhanced Engine Timing Precision: The precisely ground lobes and journals guarantee accurate valve timing, which is essential for maximizing fuel economy and reducing emissions in your diesel engine.
• Superior Wear Resistance: Constructed from high-strength alloy iron and subjected to a hardening process, this camshaft delivers exceptional resistance to wear from cam followers and bearings, extending the service life of the entire valve train.
• Reduced Downtime: As a critical spare part, having this camshaft on hand ensures you can quickly complete engine rebuilds or repairs, minimizing the downtime of your excavator or heavy equipment.
• Rigorous Quality Control: Each camshaft undergoes a machinery test report and video outgoing inspection to verify dimensional accuracy and surface finish before shipment, providing you with confidence in the product’s reliability.

Technical Specifications

OEM Cross-Reference

This camshaft is a direct replacement for the following original Mitsubishi part numbers. Please verify your existing part number before purchase:

• 31A05-00203 (Primary Number)
• 31A05-00200 (Superseded or Alternative Number)

Note: Always cross-reference your engine’s serial number with the part number to confirm 100% compatibility.

Compatibility

This camshaft is commonly used for Mitsubishi S4L2 diesel engines found in the following machinery applications:

• Excavators
• Bulldozers
• Forklifts
• Wheel Loaders
• Agricultural Tractors
• Trucks & Buses
• Generator Sets

Global Supply & Distribution

We maintain a robust supply chain to ensure fast and reliable delivery to B2B buyers worldwide. Our export capabilities cover major markets including North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Japan, South Korea, Australia, Singapore), the Middle East (UAE, Saudi Arabia), and Africa.

We offer flexible shipping options via sea freight (FOB/CIF) to major ports like Rotterdam, Houston, and Shanghai, as well as express air freight (DHL, FedEx, UPS) for urgent orders. Our experience in international trade documentation ensures smooth customs clearance for your parts.

Quality Assurance

We prioritize quality to ensure your machinery operates reliably. Our manufacturing process adheres to strict industry standards:

• Testing: Each batch is subject to a Machinery Test Report to validate performance parameters.
• Inspection: A Video Outgoing Inspection is provided for visual verification of the product before shipment.
• Warranty: This camshaft comes with a 6-month warranty against manufacturing defects, giving you peace of mind for your engine overhaul.
• Standards: Manufactured in an ISO-compliant facility with a focus on dimensional accuracy and material integrity.

FAQ

Q1: How can I confirm this camshaft will fit my Mitsubishi S4L2 engine?

Please check the part number stamped on your old camshaft. If it reads 31A05-00203 or 31A05-00200, this part is a direct replacement. If you are unsure, please contact us with your engine serial number (located on the engine nameplate) for cross-verification.

Q2: What should I replace along with the camshaft during installation?

For a reliable rebuild, we strongly recommend replacing the camshaft bearings, oil seals, and lifters (tappets) simultaneously. Worn lifters can damage a new camshaft lobe profile. Always use assembly lube on the cam lobes and journals during installation to prevent initial start-up wear.

Q3: What is the correct break-in procedure for a new camshaft?

After installation, the engine should be started and run at a fast idle (1,200-1,500 RPM) for the first 20-30 minutes. Avoid prolonged idling. This initial run-in period allows the cam lobes and lifters to mate properly. Ensure the cooling system is full and the oil pressure is stable during this process. Change the engine oil and filter after the first 50 hours of operation.