4D94 Valve Seat 6209-11-1440 6209-11-1430 for Komatsu Engine Parts Excavator Forklift

Product Details

Product Overview

This high-quality Valve Seat is specifically designed for the Komatsu 4D94 diesel engine, offering a precise OEM-fit replacement for critical engine cylinder head components. The part numbers 6209-11-1440 and 6209-11-1430 correspond directly to the intake and exhaust valve seats used in this popular engine platform.

Commonly utilized in Komatsu heavy equipment such as excavators, forklifts, loaders, and bulldozers, this valve seat is manufactured to OEM specifications, ensuring proper valve sealing, heat dissipation, and long service life. As a wear item in the cylinder head, replacing these seats during an engine overhaul is essential to restore compression and prevent valve recession.

Please verify your engine model (4D94) and existing part numbers to confirm compatibility before purchase.

Key Features & Benefits

• OEM Specification Fit: Manufactured to the exact dimensions and material hardness of the original Komatsu parts (6209-11-1440 & 6209-11-1430), ensuring a direct, drop-in replacement without modification.
• Enhanced Durability: Constructed from wear-resistant alloy steel to withstand the high temperatures and repeated impact forces within the 4D94 combustion chamber, reducing the frequency of top-end overhauls.
• Precise Valve Seal: The precision-ground seat surface provides an optimal gas-tight seal with the valve face, maximizing cylinder compression and improving fuel efficiency.
• Heat Dissipation: Engineered for excellent thermal conductivity, effectively transferring heat away from the valve head to the cylinder head to prevent hot spots and valve burning.
• Complete Set Solution: Typically sold as a set (intake and exhaust), this allows for a comprehensive replacement during cylinder head servicing, ensuring balanced wear and consistent performance.
• Rigorous Quality Control: Each valve seat undergoes hardness and dimensional inspection to ensure it meets the strict tolerances required for heavy-duty diesel applications.

Technical Specifications

OEM Cross-Reference

This valve seat is a direct replacement for the following Komatsu original equipment manufacturer (OEM) part numbers:

• 6209-11-1440 (Intake Valve Seat)
• 6209-11-1430 (Exhaust Valve Seat)

Note: While the above numbers are the direct OEM references for the 4D94, please cross-check with your existing part to ensure correct orientation (intake vs. exhaust) as they may have different chamfer angles.

Compatibility

This valve seat is specifically designed for the Komatsu 4D94 diesel engine. This engine platform is commonly used for powering the following types of heavy machinery:

• Excavators (e.g., Komatsu PC series)
• Forklifts (e.g., Komatsu FD series)
• Loaders
• Bulldozers
• Agricultural Tractors
• Industrial Trucks & Generators

Fitment Verification: Compatibility is inferred based on the engine model (4D94). Always verify your specific engine serial number and cylinder head configuration before ordering. We recommend consulting your equipment’s parts manual for exact application.

Global Supply & Distribution

We provide a reliable global supply chain for diesel engine components, including this Komatsu 4D94 valve seat. Our distribution network ensures fast and secure delivery to major industrial markets worldwide.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Japan, South Korea, Australia, Singapore), Middle East (UAE, Saudi Arabia), and Africa (South Africa, Nigeria).
• Shipping Options: We offer express courier (DHL, FedEx, UPS) for urgent orders, as well as economical sea freight for bulk shipments to major ports like Rotterdam, Los Angeles, Shanghai, and Jebel Ali.
• Trade Compliance: Our export documentation is fully compliant with international trade standards, ensuring smooth customs clearance for B2B buyers.

Quality Assurance

We are committed to supplying only high-quality aftermarket parts that meet or exceed OEM performance standards.

• Manufacturing Standards: Produced in ISO-certified facilities using precision CNC machining and heat-treating processes.
• Testing: Each batch undergoes dimensional inspection (ID/OD, height, concentricity) and hardness testing. A Machinery Test Report is available upon request.
• Warranty: We stand behind the quality of our parts with a 6-month warranty against manufacturing defects.
• Traceability: Parts are individually packaged with part number labels for easy inventory management.

FAQ

Q: What is the difference between part numbers 6209-11-1440 and 6209-11-1430?
A: Generally, 6209-11-1440 refers to the intake valve seat and 6209-11-1430 refers to the exhaust valve seat for the Komatsu 4D94 engine. The exhaust seat is typically made from a slightly harder material to withstand higher temperatures. It is crucial to install the correct seat in the correct position to ensure proper valve sealing and longevity.

Q: Do I need any special tools to install these valve seats?
A: Yes, installing valve seats requires precision. You will typically need a valve seat cutter or grinder to properly seat the new insert into the cylinder head counterbore. Additionally, a valve seat installer driver and a micrometer for measuring interference fit are standard tools for a professional engine rebuilder. We recommend having the installation performed by a qualified diesel mechanic.

Q: Should I replace the valve guides and seals at the same time?
A: Yes, it is highly recommended. When replacing valve seats, the cylinder head is already disassembled. Replacing the valve guides and valve stem seals simultaneously ensures a complete top-end overhaul. Worn guides can cause the valve to seat improperly on the new seat, leading to premature failure and oil consumption.