Product Overview

This high-quality Fuel Injection Pump Plunger and Barrel Assembly (Part Number: 134101-6420 / P49) is a precision-engineered component designed for the demanding fuel injection systems of Isuzu and Mitsubishi diesel engines. Manufactured to OEM specifications, this plunger and barrel element ensures optimal fuel delivery, combustion efficiency, and engine performance. We provide global shipping solutions to major industrial hubs in North America, Europe, Asia-Pacific, and the Middle East, offering reliable supply for both wholesale distributors and repair workshops.

Key Features & Benefits

• Precision Engineering: Manufactured from high-speed steel for superior wear resistance and extended service life under high-pressure fuel injection conditions.
• OEM Standard Quality: Direct replacement for OEM part numbers 134101-6420 and P49, ensuring a perfect fit and reliable performance.
• Optimal Fuel Efficiency: Precision-machined plunger and barrel clearance ensures accurate fuel metering, reducing emissions and improving engine power output.
• Durable Construction: Built to withstand the high temperatures and pressures within the fuel injection pump, minimizing downtime and maintenance costs.
• Rigorous Testing: Each unit is tested for dimensional accuracy and hydraulic performance before shipment to guarantee 100% quality.

Technical Specifications

OEM Cross-Reference

This plunger and barrel assembly is a direct replacement for the following OEM and reference numbers:

• Primary OEM: 134101-6420, 1341016420
• Alternative Reference: P49
• Compatible Systems: Designed for inline fuel injection pumps commonly used in Isuzu and Mitsubishi applications.

Compatibility

This component is designed for diesel engines requiring a P49 plunger and barrel element. Common applications include:

• Engine Makes: Isuzu, Mitsubishi
• Vehicle Type: Diesel trucks, construction machinery, agricultural equipment, and industrial engines.
• Note: Please verify your existing pump model and plunger size to confirm compatibility before purchase.

Global Supply & Distribution

We are a dedicated supplier of diesel engine fuel injection components with a robust global logistics network. Our distribution capabilities include:

• Worldwide Shipping: Reliable delivery via air, sea, and express courier (DHL, FedEx, UPS, TNT).
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, Poland), Asia-Pacific (Japan, Australia, Singapore, South Korea), Middle East (UAE, Saudi Arabia), and Africa.
• Fast Delivery: We maintain stock levels to ensure rapid dispatch to major ports like Shanghai, Ningbo, and Qingdao, with transit times tailored to your location.
• Export Expertise: Experienced in international trade documentation, customs clearance, and compliance with global trade standards.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities in Shandong, China, utilizing advanced CNC machining and heat treatment processes.
• Testing: Each plunger and barrel is inspected for surface finish, hardness, and dimensional tolerances to ensure leak-free performance.
• Warranty: Backed by a 4-month warranty against manufacturing defects, providing peace of mind for your wholesale or repair needs.

FAQ

Q1: Is this plunger and barrel assembly a direct fit for my Isuzu 4HF1 engine?
A1: This P49/134101-6420 assembly is commonly used in Isuzu engines, including the 4HF1 and similar series, as well as some Mitsubishi models. However, we strongly recommend comparing the part number and physical dimensions with your existing plunger to ensure correct fitment, as variations exist between pump models.

Q2: What is the recommended installation procedure for this plunger?
A2: Installation should be performed by a qualified diesel technician. The plunger and barrel must be handled with extreme care to avoid contamination. Ensure the injection pump housing is clean, lubricate the assembly with clean diesel fuel, and install it without forcing. Proper torque specifications for the pump head must be followed to prevent damage.

Q3: How can I maximize the service life of this plunger and barrel element?
A3: Longevity depends on fuel quality and maintenance. Always use clean, high-quality diesel fuel and replace your fuel filters regularly. Contaminants in the fuel are the primary cause of premature wear. Additionally, ensure the injection pump has proper lubrication and is free from air ingress to maintain optimal performance and extend the life of this component.