Camshaft Bush 4TNV98 YM129900-02410 for Yanmar Diesel Engine

Product Details

Product Overview

This high-precision Camshaft Bush, identified by the OEM part number YM129900-02410 (also referenced as 129900-02410), is a critical component engineered specifically for the Yanmar 4TNV98 diesel engine. As a core part of the valve train, this bush provides a durable bearing surface for the camshaft, ensuring smooth rotation and precise timing of the engine’s intake and exhaust valves.

Manufactured to original equipment (OEM) size specifications by, this component is designed for demanding applications commonly found in construction machinery, industrial equipment, agricultural tractors, generator sets (gensets), marine propulsion, and material handling equipment. Whether you are rebuilding a 4TNV98 engine or performing preventative maintenance, this camshaft bush is a direct replacement part that supports reliable engine performance.

Key Features & Benefits

• OEM-Spec Fitment: Manufactured to the exact OEM size (YM129900-02410) for the Yanmar 4TNV98 engine, ensuring a precise, non-interference fit without the need for modification.
• Durable Material Composition: Constructed from high-grade bearing alloy material, providing excellent wear resistance and load-bearing capacity to withstand the rotational forces of the camshaft.
• Reduced Friction: The precision-machined inner surface minimizes friction between the camshaft journal and the bush, reducing power loss and extending the life of both the camshaft and the engine block.
• Reliable Valve Timing: A properly fitted bush maintains correct camshaft alignment, ensuring optimal valve timing for peak engine efficiency, fuel economy, and reduced emissions.
• Comprehensive Application: Suitable for a wide range of heavy-duty sectors including construction, industrial, agriculture, marine, and power generation, making it a versatile stock item for dealers and repair shops.
• Easy Identification: Laser-etched or stamped with the OEM part number YM129900-02410 for quick and accurate cross-referencing during installation.

Technical Specifications

OEM Cross-Reference

This camshaft bush is a direct replacement for the following genuine Yanmar part numbers:

• YM129900-02410 (Primary OEM Number)
• 129900-02410 (Alternate Format)
• 129900-02411 (Potential superseded or alternate batch number—please verify original part)

Note: Always compare your original part against the dimensions and number above to confirm compatibility before purchase.

Compatibility

This component is specifically designed for the Yanmar 4TNV98 diesel engine series. It is commonly used for the following types of equipment:

• Construction: Mini excavators, compact track loaders, skid steer loaders.
• Agriculture: Compact tractors, harvesters, tillers.
• Industrial: Forklifts, aerial work platforms, compressors, welders.
• Marine: Auxiliary engine applications, small workboats.
• Power Generation: Generator sets (Gensets) powered by the 4TNV98 engine.

This part is not compatible with the 4TNV94, 4TNV106, or 3TNV series engines without cross-referencing the original part number.

Global Supply & Distribution

maintains a robust global supply chain to ensure fast and reliable delivery to B2B customers worldwide. We ship from our central warehouse in Guangdong, China, with direct logistics partnerships supporting major international markets.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Australia, Japan, Korea, Southeast Asia), Middle East (UAE, Saudi Arabia), and Africa.
• Shipping Options: Express (DHL, FedEx, UPS) for urgent orders, Air Freight for medium volumes, and Sea Freight (FCL/LCL) for bulk stock replenishment to major ports like Los Angeles, Rotterdam, Shanghai, and Dubai.
• Trade Compliance: All products are exported under standard international trade terms (FOB, CIF, EXW) with full commercial documentation (Packing List, Commercial Invoice, Bill of Lading).
• Inventory: High stock availability for the YM129900-02410 bush ensures minimal lead times for both single-unit orders and wholesale quantities.

Quality Assurance

At, quality control is integral to our manufacturing process. Each Camshaft Bush undergoes rigorous inspection to meet international standards.

• Manufacturing Standards: Produced in ISO 9001 certified facilities, utilizing precision CNC machining and strict metallurgical analysis.
• Testing Procedures: Each batch is tested for dimensional accuracy, surface hardness, and material composition to ensure it meets OEM performance requirements.
• Warranty: Backed by a 6-month warranty against manufacturing defects in material and workmanship.
• Inspection: Video outgoing inspection is available upon request to verify part condition before shipping.

FAQ

Q: How do I confirm this Camshaft Bush fits my Yanmar 4TNV98 engine?

A: First, verify that your engine model is stamped as “4TNV98” on the engine data plate. Second, locate the original part number on the old bush or in your engine service manual. If it reads YM129900-02410 or 129900-02410, this part is a direct replacement. We recommend measuring the inner diameter (ID) and outer diameter (OD) of your old bush to compare with the OEM standard size if you are unsure.

Q: What is the recommended installation procedure for this bush?

A: Installation should be performed by a qualified diesel mechanic. The bush is typically pressed into the cylinder block or camshaft housing using a proper driver tool to avoid distortion. Apply clean engine oil to the inner surface before inserting the camshaft. Always check the camshaft end-play and journal clearance after installation using a plastigauge or feeler gauge to ensure it falls within the manufacturer’s service limits (typically 0.02-0.06 mm clearance).

Q: Can I use this bush in a high-hour engine rebuild?

A: Yes, this is a standard replacement part for engine overhauls. However, it is critical to inspect the camshaft journals for scoring or wear. If the camshaft is worn beyond specification, a new camshaft should be installed alongside this bush to prevent accelerated wear of the new bearing surface. For high-performance or turbocharged 4TNV98 applications, ensure the bush material is compatible with the specific oil viscosity you are using.