Yanmar 4TNV94 Cylinder Liner 129907-01109 Compatible with Volvo EC55 Mahle Sleeve

Product Details

Product Overview

This is a premium, brand-new Yanmar 4TNV94 Cylinder Liner, carrying the OEM part number 129907-01109. Manufactured by MAHLE, a globally recognized leader in engine component technology, this cylinder sleeve is designed to meet the exacting standards required for diesel engine overhaul and repair.

This specific cylinder liner is commonly used for the Yanmar 4TNV94 diesel engine, which is frequently found powering compact construction machinery such as the Volvo EC55 excavator. It serves as a direct replacement for the original worn or damaged sleeve, restoring compression and oil control within the engine block.

Please verify your engine model (4TNV94) and existing part number (129907-01109) to ensure correct fitment before purchase. This product is ideal for workshops, equipment dealers, and machinery owners performing engine rebuilds.

Key Features & Benefits

• OEM Standard & Fit: Manufactured to meet or exceed original Yanmar specifications (Part No. 129907-01109), ensuring a precise drop-in fit for the 4TNV94 engine block.
• Enhanced Engine Performance: Restores proper piston-to-liner clearance, improves compression ratios, and reduces oil consumption, leading to more efficient engine operation.
• 100% New Condition: This is a brand-new component, not a remanufactured or used part, guaranteeing a full service life and reliable performance under heavy-duty conditions.
• Reduced Downtime: Designed for easy installation, this direct replacement part helps minimize equipment downtime during engine overhauls for excavators like the Volvo EC55.
• Corrosion Resistance: The cylinder liner is treated or coated to resist corrosion and wear from combustion byproducts and coolant, extending the engine’s rebuild interval.

Technical Specifications

OEM Cross-Reference

This cylinder liner is a direct cross-reference for the following original equipment manufacturer numbers. It is not a generic part; it is specifically machined to match the dimensions and tolerances of the Yanmar 4TNV94 engine.

• Yanmar: 129907-01109

Note: While the primary cross-reference is the Yanmar number, this MAHLE-manufactured part is often used as a direct replacement for the OE sleeve in Volvo EC55 and similar compact excavators.

Compatibility

This cylinder liner is specifically designed for the Yanmar 4TNV94 diesel engine. It is commonly used in the following applications:

• Engine Models: Yanmar 4TNV94, 4TNV94L, 4TNV98
• Excavator Models: Volvo EC55 (and similar compact excavators utilizing the 4TNV94 engine), Yanmar Vio series
• Other Equipment: Skid steer loaders, compact track loaders, and agricultural tractors powered by the Yanmar 4TNV94 engine.

Important Fitment Note: This is an aftermarket replacement part manufactured to OEM specifications. Please verify your engine model and existing part number to confirm 100% compatibility before ordering. We do not list specific year ranges as fitment depends on the engine model, not the machine year.

Global Supply & Distribution

We are a leading supplier of diesel engine parts based in Shanghai, China, with a robust global logistics network. We specialize in exporting to major industrial markets worldwide.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Japan, Korea, Australia), Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile).
• Shipping Options: We offer fast and reliable shipping via sea freight (FOB/CIF) for bulk orders and express air freight (DHL, FedEx, UPS) for urgent or sample orders. Delivery to major ports like Rotterdam, Los Angeles, and Shanghai is streamlined.
• Trade Compliance: We have extensive experience in international trade, ensuring all shipments comply with customs regulations and are properly packaged for export.

Quality Assurance

We are committed to providing high-quality replacement parts that meet rigorous standards.

• Manufacturing Standards: This product is manufactured in ISO-certified facilities, utilizing high-grade materials and precision machining processes to ensure dimensional accuracy and surface finish.
• Warranty: We offer a 3-month warranty against manufacturing defects. Our after-warranty service includes online technical support to assist with any fitment or performance inquiries.
• Testing: While a full Machinery Test Report is not provided for individual liners, the manufacturing batch undergoes random quality checks for hardness, roundness, and surface finish to ensure consistency.

FAQ

Q: Is this cylinder liner a direct fit for my Volvo EC55 excavator?

A: This liner is specifically designed for the Yanmar 4TNV94 engine. The Volvo EC55 is one of the most common applications for this engine. However, to guarantee a perfect fit, please remove your old liner and check the part number (129907-01109) or measure the outer diameter and height. This is not a generic part.

Q: What is the difference between a “Cylinder Liner” and a “Cylinder Sleeve”?

A: There is no difference. The terms “Cylinder Liner” and “Cylinder Sleeve” are used interchangeably in the industry. Both refer to the replaceable cylindrical component that fits into the engine block to form the combustion chamber wall. This product is both.

Q: Do I need to replace piston rings when installing a new cylinder liner?

A: Yes, it is highly recommended. When installing a new cylinder liner, the old piston rings will have worn to match the previous cylinder bore. Reusing them with a new liner will result in poor compression, high oil consumption, and potential scoring. Always install new piston rings and ensure proper ring end gap clearance for the new liner.