4D84 Engine Valve 129150-13353 129150-13351 129100-11100 for Yanmar Diesel Engines

Product Details

Product Overview

This high-quality engine valve is specifically designed for Yanmar 4D84 diesel engines, offering a direct replacement solution for construction, agricultural, industrial, and marine applications. The valve set includes critical OEM cross-reference numbers 129150-13353, 129150-13351, and 129100-11100, ensuring precise fitment and reliable performance in demanding work environments.

Crafted to meet original equipment manufacturer (OEM) specifications, these valves are ideal for maintaining or restoring engine compression and efficiency. Whether you are servicing a Yanmar-powered excavator, generator set, or agricultural tractor, these components provide the durability and dimensional accuracy required for long service life.

Key Features & Benefits

• Precision OEM Fitment: Manufactured to strict OEM size and tolerance specifications, ensuring seamless installation without modifications.
• Enhanced Durability: Constructed from high-strength alloy steel with heat-resistant properties to withstand extreme combustion temperatures and pressures.
• Multiple Part Number Compatibility: Covers three critical OEM numbers (129150-13353, 129150-13351, 129100-11100) for simplified inventory management.
• Versatile Application: Suitable for Yanmar 4D84 engines used in construction equipment, agricultural machinery, industrial generators, and marine propulsion systems.
• Rigorous Quality Control: Each valve undergoes outgoing inspection and machinery test reporting to guarantee performance consistency.
• Secure Packaging: Delivered in protective plastic bag, box, and carton layers to prevent damage during international transit.
• After-Sales Support: Backed by a 6-month warranty and online technical support for peace of mind.

Technical Specifications

OEM Cross-Reference

This valve set is directly interchangeable with the following original Yanmar part numbers:

• 129150-13353 – Primary intake/exhaust valve for 4D84 series
• 129150-13351 – Alternative variant for specific 4D84 configurations
• 129100-11100 – Cross-referenced valve for earlier production models

Note: Always verify your engine’s serial number and valve head diameter to confirm compatibility before ordering.

Compatibility

These engine valves are commonly used for Yanmar 4D84 diesel engines found in:

• Construction Equipment: Mini excavators, compact loaders, and backhoes
• Agricultural Machinery: Tractors, harvesters, and irrigation pumps
• Industrial Engines: Generator sets, compressors, and welding units
• Marine Applications: Auxiliary engines and small vessel propulsion systems
• Material Handling: Forklifts and telehandlers

Fitment is based on engine model specification. Please confirm your equipment’s engine details to ensure proper application.

Global Supply & Distribution

We provide reliable worldwide shipping from our distribution hub in Guangdong, China, with fast delivery to major ports and industrial centers across North America, Europe, Southeast Asia, the Middle East, Africa, and Oceania. Our logistics network ensures that orders reach you within competitive transit times, whether by air freight for urgent requirements or sea freight for bulk cost savings.

We have extensive experience in international trade, offering compliant documentation, customs clearance support, and flexible shipping options for B2B buyers. Our inventory management system maintains consistent stock levels to meet both small-scale maintenance needs and large fleet procurement demands.

Quality Assurance

Each engine valve is manufactured under strict quality control protocols in ISO-compliant facilities. Key quality measures include:

• Material Verification: Raw material composition tested to ensure heat resistance and structural integrity.
• Dimensional Inspection: Valve stem diameter, head diameter, and seat angle checked against OEM blueprints.
• Functional Testing: Video outgoing inspection and machinery test reports provided upon request.
• Surface Treatment: Optional nitride or chrome coating for enhanced wear resistance (available via OEM service).

We stand behind our products with a 6-month warranty against manufacturing defects and offer online technical support for post-warranty inquiries.

FAQ

Q1: How do I confirm these valves will fit my Yanmar 4D84 engine?
A: Verify your engine’s model number (should be 4D84) and check the existing valve part numbers. The three listed OEM numbers (129150-13353, 129150-13351, 129100-11100) are direct replacements. If your valve has a different number, measure the valve head diameter (±0.1mm) and stem diameter to compare with original specifications.

Q2: What is the recommended installation procedure for these valves?
A: Always replace valves in sets (intake and exhaust) to maintain balanced compression. Clean valve guides thoroughly, apply assembly lubricant to stems, and adjust valve clearance to Yanmar 4D84 specifications (typically 0.25mm intake / 0.30mm exhaust cold). Use a new valve stem seal and torque cylinder head bolts in sequence.

Q3: How can I maximize valve service life in heavy-duty applications?
A: Ensure proper engine cooling system maintenance to prevent overheating, which accelerates valve wear. Use high-quality diesel fuel with appropriate cetane rating and change oil at recommended intervals. For generators or marine engines operating at constant RPM, schedule valve clearance checks every 500 operating hours.