Product Overview

This high-quality A-Type plunger, model A74 (OEM 131151-5820), is a precision component engineered for the fuel injection system of Komatsu 6D105 diesel engines. Manufactured in Shandong, China, this plunger is designed for direct replacement and repair, ensuring optimal fuel delivery and engine performance. We serve a global B2B clientele, with major markets in North America, Europe, Southeast Asia, and the Middle East, providing reliable supply chain solutions for industrial and construction machinery.

Key Features & Benefits

• Precision Engineering: Manufactured to standard OEM specifications (A74) for a perfect fit and reliable sealing within the fuel injection pump.
• Enhanced Durability: Constructed from high-quality alloy steel with a hardened surface to withstand high pressure and wear, extending service life.
• Improved Fuel Efficiency: Precision ground plunger and barrel pairing ensure accurate fuel metering, reducing fuel consumption and emissions.
• Direct Replacement: Ready-to-install component for repair or replacement of worn fuel injection parts on 6D105 engines.
• Reliable Performance: Restores engine power and smooth operation by maintaining correct injection timing and pressure.

Technical Specifications

OEM Cross-Reference

This plunger is a direct cross-reference for the following OEM part numbers:

• 131151-5820 (Primary OEM Number)
• 1311515820 (Alternate Format)
• A74 (Model/Part Code)

Note: Always verify physical dimensions and application against your specific fuel injection pump model.

Compatibility

• Engine Model: Komatsu 6D105
• Application: Fuel Injection Pump for industrial and construction machinery engines.
• Vehicle/Equipment: Suitable for Komatsu bulldozers, excavators, and other heavy equipment powered by the 6D105 engine.

Global Supply & Distribution

We provide efficient worldwide shipping solutions to meet the demands of international B2B buyers. Our logistics network ensures fast and reliable delivery to major ports and industrial centers globally.

• Shipping Partners: DHL, FedEx, EMS, TNT, UPS
• Delivery Time: 3-7 business days (depending on location)
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (Japan, South Korea, Australia), Middle East (UAE, Saudi Arabia), and Africa.
• Export Experience: Our team has extensive experience in international trade, ensuring proper documentation and customs compliance for smooth global transactions.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities with rigorous quality control processes.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Testing: Each plunger undergoes dimensional and surface finish inspections to guarantee adherence to OEM specifications.
• Service: 24-hour customer service support for technical inquiries and after-sales assistance.

FAQ

Q: Is this A74 plunger a direct fit for my Komatsu 6D105 fuel pump?
A: Yes, this plunger is a standard-sized replacement part specifically designed for the A-type fuel injection pump used on the Komatsu 6D105 engine. It is a direct fit and matches the OEM dimensions of the 131151-5820 part. We recommend confirming your pump’s model and plunger size before ordering.

Q: What is the typical installation procedure for this high-pressure plunger?
A: Installation requires careful disassembly of the fuel injection pump. The old plunger and barrel set must be removed, and the bore cleaned. The new plunger set should be lubricated with clean diesel fuel or assembly oil before insertion. Correct alignment of the plunger’s control sleeve is critical. We recommend installation by a qualified diesel technician to ensure proper timing and sealing.

Q: How can I ensure the longevity of this plunger?
A: Longevity depends on fuel quality and maintenance. Always use clean, high-quality diesel fuel and replace fuel filters regularly. Ensure the injection pump is properly timed and lubricated. Regular inspection of the fuel system for contaminants will significantly extend the life of the plunger and barrel assembly.