Starter Motor S3L S3L2 S4L S4L2 K4D 12V 13T 2.2kW QDJ1431S 31B66-00101 for Mitsubishi Engine

Product Details

Product Overview

This high-quality starter motor is a direct replacement for the Mitsubishi S3L, S3L2, S4L, S4L2, and K4D diesel engine series. Designed for heavy-duty applications, it delivers reliable starting power with a 12V, 13-tooth drive gear and 2.2kW output. The part is identified by OEM numbers 31B66-00101 and QDJ1431S, ensuring a precise fitment for a wide range of industrial and construction equipment.

Built to OEM specifications, this starter motor is commonly used in forklifts, excavators, trucks, loaders, bulldozers, and buses. Whether you are replacing a worn-out unit or stocking spare parts for a fleet, this component provides the durability and performance required for demanding diesel engine environments.

Key Features & Benefits

• Precision Fitment: Direct replacement for Mitsubishi S3L, S3L2, S4L, S4L2, and K4D diesel engines with OEM number 31B66-00101 and QDJ1431S.
• Reliable Starting Power: 2.2kW output at 12V ensures consistent cranking torque even in cold or high-load conditions.
• Durable Construction: Manufactured to OEM size and specifications, using robust materials to withstand vibration, heat, and heavy use in construction and material handling equipment.
• Versatile Application: Suitable for forklifts, excavators, trucks, loaders, bulldozers, and buses, making it an ideal stock item for multi-brand service shops.
• Easy Installation: Bolt-on replacement with standard 13-tooth drive gear, compatible with existing mounting points and electrical connections.
• Rigorous Testing: Each unit undergoes outgoing video inspection and machinery test reports to ensure performance and reliability before shipment.
• OEM Service Available: Custom branding or packaging options can be arranged for volume orders.

Technical Specifications

OEM Cross-Reference

This starter motor is a direct replacement for the following OEM numbers:

• 31B66-00101 – Original Mitsubishi part number
• QDJ1431S – Common aftermarket replacement number
• S3L / S3L2 / S4L / S4L2 / K4D – Compatible Mitsubishi engine series

If your application uses a different OEM number for the same Mitsubishi engine series, please verify the mounting pattern, voltage (12V), and tooth count (13T) before ordering.

Compatibility

This starter motor is commonly used for the following equipment and applications:

• Forklifts: Mitsubishi, Nissan, TCM, and other brands using S3L/S4L engines
• Excavators: Mini and mid-size excavators with Mitsubishi diesel engines
• Trucks & Loaders: Light-duty trucks, skid steer loaders, and backhoes
• Bulldozers & Buses: Small bulldozers and bus auxiliary power units
• Industrial Engines: Generators, pumps, and agricultural machinery powered by Mitsubishi S3L/S4L/K4D series

Note: Fitment is inferred based on engine model and OEM cross-reference. Always verify physical compatibility with your specific equipment before purchase.

Global Supply & Distribution

We ship this starter motor worldwide from our warehouse in Guangdong, China. Our distribution network covers all major markets, including:

• North America: Fast delivery to ports like Los Angeles, New York, and Vancouver
• Europe: Reliable shipping to Rotterdam, Hamburg, and Antwerp
• Asia-Pacific: Direct service to Singapore, Tokyo, and Sydney
• Middle East & Africa: Efficient logistics to Dubai, Jeddah, and Lagos
• South America: Available via major ports such as Santos and Buenos Aires

We offer flexible shipping options including air freight, sea freight, and express courier (DHL, FedEx, UPS) to meet urgent or bulk order requirements. Our export team ensures all documentation and customs compliance for smooth international transactions.

Quality Assurance

• Manufacturing Standards: Produced in ISO-compliant facilities with strict quality control processes.
• Testing: Each unit undergoes outgoing video inspection and machinery test reports to verify performance, torque, and electrical integrity.
• Warranty: 6-month warranty against manufacturing defects. Claims are processed promptly with replacement or refund options.
• Packaging: Securely packed in plastic bags, boxes, or cartons to prevent damage during transit.

FAQ

Q1: How do I confirm this starter motor fits my equipment?
Check your existing starter motor for the OEM number (31B66-00101 or QDJ1431S) and verify it has a 12V, 13-tooth drive gear. Also confirm your engine is from the Mitsubishi S3L, S3L2, S4L, S4L2, or K4D series. If in doubt, measure the mounting bolt pattern and compare with your old unit.

Q2: What is the typical lifespan of this starter motor?
With proper installation and regular maintenance (e.g., clean electrical connections, adequate battery voltage), this starter motor can last 3-5 years in normal operating conditions. Heavy use in dusty or wet environments may require more frequent inspection.

Q3: Can I use this on a 24V system?
No. This starter motor is specifically designed for 12V electrical systems only. Using it on a 24V system will cause immediate damage to the windings and solenoid. Always match voltage to your equipment’s electrical system.