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.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .