S4E Cylinder Liner 34407-00301 34407-0031 for Mitsubishi Engine Parts

Product Details

Product Overview

This premium replacement S4E Cylinder Liner is precision-engineered for Mitsubishi diesel engines, offering a direct OEM-grade fit for demanding industrial applications. Identified by the critical part numbers 34407-00301 and 34407-0031, this liner is designed to restore compression, reduce oil consumption, and extend engine service life in heavy-duty equipment.

Manufactured under the brand, this component is produced to meet strict dimensional tolerances matching original specifications. It is commonly used in construction machinery, agricultural tractors, generator sets, marine propulsion systems, and material handling equipment powered by the Mitsubishi S4E engine platform. While fitment is inferred based on OEM cross-references, this part is a direct replacement for the original factory components.

Key Features & Benefits

• OEM-Spec Dimensions: Manufactured to match exact OEM size standards (34407-00301 / 34407-0031), ensuring seamless installation without modifications.
• Enhanced Durability: Constructed from high-grade cast iron with superior wear resistance, designed to withstand high combustion pressures and thermal cycling.
• Improved Compression: Precision-honed internal surface provides optimal piston ring sealing, maximizing engine power output and fuel efficiency.
• Reduced Oil Consumption: Consistent bore geometry minimizes oil bypass, lowering operating costs and extending service intervals.
• 100% New Production: Each liner is brand new, not remanufactured, eliminating the risks associated with reused components.
• Rigorous Quality Control: Includes outgoing video inspection and machinery test reports, verifying dimensional accuracy and surface finish.
• Versatile Application: Suitable for construction, agriculture, genset, marine, and mining equipment operating in demanding environments worldwide.

Technical Specifications

OEM Cross-Reference

This cylinder liner is a direct replacement for the following original Mitsubishi part numbers:

• 34407-00301 (Primary OEM Number)
• 34407-0031 (Alternative/Updated OEM Number)

Note: Always verify the existing part number on your component before ordering. This liner matches the dimensions and specifications of the listed OEM references.

Compatibility

This cylinder liner is specifically designed for the Mitsubishi S4E diesel engine platform. It is commonly used for the following applications:

• Construction Equipment: Excavators, Bulldozers, Wheel Loaders
• Agricultural Machinery: Tractors, Harvesters, Irrigation Pumps
• Industrial Power: Generator Sets (Gensets), Compressors, Welding Machines
• Marine Propulsion: Workboats, Fishing Vessels, Auxiliary Engines
• Material Handling: Forklifts, Telehandlers, Cranes
• Mining Equipment: Loaders, Drills, Haul Trucks

Important: This part is intended for the S4E engine block. Please confirm your engine model and serial number before purchase to ensure compatibility.

Global Supply & Distribution

We maintain a robust global supply chain to serve B2B buyers across all major industrial markets. Our export capabilities include:

• North America: Fast delivery to ports in Los Angeles, Houston, New York, and Vancouver.
• Europe: Shipping to Rotterdam, Hamburg, Antwerp, and major inland distribution hubs.
• Asia-Pacific: Direct service to Singapore, Dubai, Shanghai, and Sydney.
• Middle East & Africa: Reliable shipping to Jebel Ali, Dammam, and Durban.
• Latin America: Coverage for Santos, Callao, and Manzanillo ports.

We offer flexible shipping options including air freight, sea freight (FCL/LCL), and express courier services. All shipments are professionally packed with export-grade materials to prevent damage in transit. Our team handles all customs documentation and provides real-time tracking.

Quality Assurance

• Manufacturing Standards: Produced in ISO-compliant facilities using precision casting and CNC machining processes.
• Dimensional Accuracy: Each liner is inspected for bore diameter, wall thickness, and flange height using calibrated gauges.
• Material Certification: Cast iron composition is verified for hardness, tensile strength, and wear resistance.
• Warranty: All parts are backed by a 6-month warranty against manufacturing defects in materials and workmanship.
• Test Reports: Machinery test reports and video outgoing inspection records are available upon request for quality verification.

FAQ

Q1: How do I confirm this cylinder liner fits my Mitsubishi S4E engine?

A: First, locate the engine model plate on your equipment. Verify the model is listed as “S4E” or “S4E-…”. Then, remove the existing cylinder liner and check for the part number stamped on its inner flange (should be 34407-00301 or 34407-0031). Measure the outer diameter and height to compare with the OEM specifications. If in doubt, contact our technical support with your engine serial number for cross-referencing.

Q2: What is the recommended installation procedure for this cylinder liner?

A: Installation should be performed by a qualified diesel mechanic. The liner must be pressed into a clean, dry cylinder bore using a proper installation tool to avoid distortion. Apply a thin layer of anti-seize compound on the outer surface of the liner (if specified by the engine manual). After installation, check the liner protrusion above the block deck using a straightedge and feeler gauge—typical specification is 0.02-0.10 mm. Always reference the Mitsubishi S4E service manual for exact torque values and procedures.

Q3: What maintenance is required after installing new cylinder liners?

A: After installation, the engine must be properly “run-in” to seat the piston rings. Operate the engine at varying loads (not at full throttle) for the first 50-100 hours. Change the engine oil and filter after the break-in period to remove any metal particles. Regularly check coolant quality and maintain proper operating temperature to prevent liner cavitation. For high-hour applications, inspect liners at every major overhaul interval (typically 6,000-10,000 hours depending on duty cycle).