Mitsubishi S3L S4L Engine Connecting Rod 31A19-10024 | Diesel Engine Rebuild Parts

Product Details

Product Overview

This premium aftermarket connecting rod is specifically engineered for Mitsubishi S3L and S4L diesel engines, carrying the critical OEM reference number 31A19-10024. As a core component of the engine’s rotating assembly, this connecting rod is designed to convert the reciprocating motion of the piston into the rotational motion of the crankshaft, enduring extreme forces and high temperatures during operation.

Manufactured to OEM size specifications, this part is an ideal replacement for construction machinery, industrial equipment, agricultural tractors, generator sets, marine engines, and material handling equipment powered by Mitsubishi S3L or S4L diesel powerplants. While we supply high-quality aftermarket components, buyers should verify compatibility with their specific engine serial number before installation.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM dimensions (31A19-10024) ensuring proper fitment and alignment within Mitsubishi S3L/S4L engine blocks.
• Durable Construction: Forged from high-strength alloy steel, heat-treated for enhanced fatigue resistance and longevity in demanding diesel applications.
• Rigid Quality Control: Each connecting rod undergoes dimensional inspection and hardness testing to meet or exceed original equipment standards.
• Direct Replacement: Designed as a drop-in replacement part, minimizing installation time and reducing downtime for your equipment.
• Versatile Application: Suitable for a wide range of machinery including excavators, generators, tractors, pumps, and marine drives using Mitsubishi S3L/S4L engines.
• Cost-Effective Solution: Provides reliable performance at a competitive price point compared to OEM dealer parts, without compromising on quality.
• Complete Rebuild Support: Ideal for engine overhaul kits, often used alongside pistons, rings, bearings, and gaskets for a comprehensive rebuild.

Technical Specifications

OEM Cross-Reference

This connecting rod is manufactured as a direct replacement for the following original Mitsubishi part numbers:

• 31A19-10024 (Primary OEM Number)
• 31A19-10020 (Superseded/Alternative Reference)
• ME013573 (Mitsubishi Engine Parts Reference)

Note: Cross-reference numbers are provided for identification purposes. Always confirm compatibility with your specific engine serial number and connecting rod marking.

Compatibility

This connecting rod is commonly used for the following Mitsubishi diesel engine models and applications:

• Engine Models: Mitsubishi S3L, Mitsubishi S4L, Mitsubishi S3L2, Mitsubishi S4L2
• Typical Applications:
  • Construction: Mini excavators, skid steer loaders, compact track loaders
  • Agriculture: Tractors, harvesters, irrigation pumps
  • Industrial: Forklifts, compressors, generators
  • Marine: Small workboats, auxiliary engines
  • Material Handling: Telehandlers, aerial work platforms

Fitment Notice: This part is designed for Mitsubishi S-Series engines. Always verify engine model code and connecting rod identification marks before purchasing to ensure correct fitment.

Global Supply & Distribution

As a dedicated supplier of engine components, we serve a global B2B customer base across all major industrial markets:

• North America: Quick delivery to ports in Los Angeles, Houston, New York, and Vancouver for construction and agricultural equipment rebuilders.
• Europe: Regular shipments to Rotterdam, Hamburg, and Antwerp for industrial and marine engine repair shops.
• Asia-Pacific: Efficient logistics to Singapore, Busan, and Shanghai for regional machinery dealers.
• Middle East & Africa: Stock available for Dubai, Jeddah, and Lagos markets serving mining and oilfield equipment.
• Latin America: Distribution to Santos, Callao, and Manzanillo for agricultural and construction sectors.

We maintain export-ready inventory with professional packaging suitable for international freight, ensuring parts arrive in perfect condition. Our team provides commercial invoices, packing lists, and certificates of origin to facilitate smooth customs clearance worldwide.

Quality Assurance

We are committed to delivering components that meet rigorous quality standards:

• Manufacturing Standards: Produced in ISO 9001-certified facilities with strict process controls.
• Material Certification: Each batch of raw material is tested for chemical composition and mechanical properties.
• Dimensional Inspection: Connecting rods are checked for center distance, bore diameter, parallelism, and twist tolerance.
• Testing Available: Machinery test reports and video outgoing inspection can be provided upon request for quality verification.
• Warranty: 6-month warranty against manufacturing defects in materials and workmanship.

FAQ

Q1: How do I confirm if this connecting rod fits my Mitsubishi S4L engine?

Please check the engine model plate located on the engine valve cover or block. The model should read “S4L” or “S4L2”. Additionally, remove the oil pan and inspect the existing connecting rod for a stamped number. If it reads 31A19-10024 or 31A19-10020, this part is a direct replacement. For absolute certainty, measure the big end bore diameter (typically 45mm) and small end pin diameter (typically 24mm) to match our specifications.

Q2: Can I install this connecting rod without removing the engine from the equipment?

While it is technically possible to replace connecting rods with the engine in situ on some equipment (e.g., forklifts or generators with good access), we strongly recommend removing the engine for a proper rebuild. Connecting rod replacement requires removal of the cylinder head, oil pan, and pistons. In-frame replacement increases the risk of contamination entering the engine. For best results, perform this work as part of a complete engine overhaul on a clean workbench.

Q3: What other parts should I replace when installing a new connecting rod?

When replacing a connecting rod, it is considered best practice to replace the following components simultaneously: connecting rod bearings (main and big end), piston pin and retaining rings, piston rings, and cylinder head gasket. We recommend purchasing a complete overhaul gasket set and bearing set for your Mitsubishi S4L engine. Always torque the connecting rod bolts to the manufacturer’s specification (typically 49-54 Nm for S4L engines) using a calibrated torque wrench and never reuse old bolts.