Yanmar 3TNE74 3TNA74 Cylinder Liner 126300-14101 | Diesel Engine Parts

Product Details

Product Overview

This high-quality cylinder liner is specifically engineered for Yanmar 3TNE74 and 3TNA74 diesel engines, offering a direct OEM replacement solution. As a critical component for engine rebuilds and overhauls, this liner ensures precise fitment and reliable performance. We serve a global network of B2B clients, including heavy equipment distributors, engine rebuilders, and fleet maintenance operations across North America, Europe, Southeast Asia, and the Middle East.

Key Features & Benefits

• Premium Material Construction: Manufactured from high-grade cast iron with superior wear resistance and thermal stability.
• Precision Machining: Honed to exacting tolerances for optimal piston ring sealing and reduced oil consumption.
• Direct OEM Replacement: Matches original Yanmar specifications for seamless installation without modifications.
• Enhanced Durability: Designed to withstand high combustion pressures and temperatures, extending engine service life.
• Corrosion Protection: Treated surface resists pitting and cylinder wall degradation from fuel contaminants.

Technical Specifications

OEM Cross-Reference

This cylinder liner is a direct replacement for the following OEM numbers:

• Yanmar: 126300-14101
• Compatible Aftermarket Numbers: 3TNE74-Liner, 3TNA74-Liner

Note: Always verify fitment with your specific engine serial number before purchase.

Compatibility

Engine Models:

• Yanmar 3TNE74 (3-cylinder, indirect injection)
• Yanmar 3TNA74 (3-cylinder, naturally aspirated)

Common Applications:

• Industrial generators and compressors
• Agricultural tractors (e.g., Yanmar YM series)
• Construction equipment (mini excavators, compact loaders)
• Marine auxiliary engines

Year Range: Compatible with engines manufactured from 1990s to present, depending on model variant.

Global Supply & Distribution

We maintain robust inventory and offer worldwide shipping to support industrial maintenance schedules:

• Major Markets Served: USA, Canada, Germany, UK, Australia, Japan, UAE, Saudi Arabia, Brazil, South Africa, and Southeast Asia.
• Shipping Capabilities: Express (DHL/FedEx), Air Freight, and Sea Freight (FCL/LCL) to major ports including Rotterdam, Shanghai, Singapore, Los Angeles, and Dubai.
• Lead Times: Standard delivery 5-10 business days for air freight; 15-30 days for sea freight.
• Export Compliance: All products are packaged and documented per international trade regulations (HS Code 8409.91).

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001:2015 certified facilities with strict dimensional and metallurgical controls.
• Testing: Each liner undergoes hardness testing, surface roughness verification, and 100% dimensional inspection using CMM equipment.
• Warranty: 12-month warranty against manufacturing defects under normal operating conditions.
• Certifications: Material test certificates available upon request.

FAQ

Q1: Can this cylinder liner be installed without removing the engine?
A: Yes, the 3TNE74/3TNA74 cylinder liner is a wet-type replaceable liner. It can be installed after removing the cylinder head and oil pan, without fully disassembling the engine block. However, proper cleaning of the block bore and use of a suitable sealant (e.g., Loctite 518) is required to prevent coolant leaks.

Q2: What is the recommended piston ring gap for this liner?
A: For optimal performance, maintain a top ring end gap of 0.30-0.45 mm and a second ring gap of 0.25-0.40 mm. Always check the service manual for your specific engine variant, as tolerances may vary slightly between 3TNE74 and 3TNA74 models.

Q3: How do I identify if my Yanmar engine uses wet or dry cylinder liners?
A: The 3TNE74 and 3TNA74 engines exclusively use wet cylinder liners, which are in direct contact with engine coolant. You can confirm by checking the engine block for coolant passages around the cylinder bores. Dry liners are not used in these models, so this part is the correct replacement for all standard rebuilds.