Product Overview

This high-precision Diesel Engine Pump Plunger and Barrel Assembly, model A138 with OEM number 131152-1420 (also referenced as 1311521420), is a critical component for the fuel injection systems of Isuzu and Mitsubishi diesel engines. Manufactured to OEM specifications, this plunger and barrel element ensures optimal fuel metering, high injection pressure, and reliable engine performance. As a trusted supplier based in Shandong, China, we serve a global B2B clientele across North America, Europe, Asia-Pacific, the Middle East, and Africa, offering competitive wholesale pricing and fast logistics.

Key Features & Benefits

• Precision Engineering: Manufactured from high-speed steel for exceptional wear resistance and dimensional stability.
• Optimal Fuel Efficiency: Ensures precise fuel delivery and atomization, reducing fuel consumption and emissions.
• Direct Fitment: Standard size design for seamless replacement of worn or damaged original parts.
• High Durability: Hardened and ground surfaces provide a long service life under extreme pressure and temperature conditions.
• Rigorous Testing: Each unit passes strict quality control checks for leak-tightness, pressure tolerance, and surface finish.

Technical Specifications

OEM Cross-Reference

This product is a direct replacement for the following OEM part numbers:

• 131152-1420 (Primary)
• 1311521420 (Alternative format)
• A138 (Model/Assembly reference)

Please verify your original part number before purchasing. This assembly is designed to match the original specifications for a perfect fit.

Compatibility

This plunger and barrel assembly is designed for use in fuel injection pumps fitted to:

• Engine Makes: Isuzu, Mitsubishi
• Vehicle Types: Diesel trucks, heavy-duty commercial vehicles, construction machinery, and agricultural equipment.
• Engine Series: Commonly found in inline and distributor-type fuel injection pumps for 4-cylinder and 6-cylinder diesel engines.

Note: Compatibility may vary by specific pump model. Please confirm your pump type and existing part number.

Global Supply & Distribution

We are a dedicated exporter of diesel engine components, offering reliable global supply chain solutions:

• Worldwide Shipping: We ship via sea, air, and express couriers (DHL, FedEx, UPS, TNT) to meet urgent demands.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, Poland), Asia-Pacific (Japan, South Korea, Australia, Indonesia), Middle East (UAE, Saudi Arabia, Turkey), Africa (Nigeria, South Africa, Kenya), and South America (Brazil, Argentina).
• Fast Delivery: Stock items are dispatched within 24-48 hours. Bulk orders are consolidated and shipped to major ports like Shanghai, Qingdao, and Ningbo.
• Export Expertise: We have extensive experience in international trade documentation, customs clearance, and compliance with destination country regulations.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities using advanced CNC machining and heat treatment processes.
• Material Integrity: All components are made from high-grade high-speed steel, ensuring hardness and resistance to deformation.
• Testing: Each plunger and barrel assembly is tested for surface roughness, dimensional accuracy, and hydraulic pressure sealing before packaging.
• Warranty: We offer a 4-month warranty against manufacturing defects. Our professional after-sales team is ready to assist with any quality concerns.

FAQ

Q1: How do I confirm if this A138 plunger and barrel assembly fits my injection pump?
Please check the existing part number on your old plunger or the injection pump body. The primary cross-reference is 131152-1420 or 1311521420. If your pump uses an A138 element, this will be a direct match. For further verification, please contact us with your pump model and engine type.

Q2: What is the recommended installation procedure for this plunger and barrel?
Installation should be performed by a qualified diesel technician. Ensure the pump housing and bore are perfectly clean and free of debris. Lubricate the plunger with clean diesel fuel or assembly oil before insertion. Do not force the plunger; it should slide smoothly. After installation, bleed the fuel system and check for leaks before starting the engine.

Q3: How can I maintain the longevity of this fuel injection component?
Use high-quality, clean diesel fuel and replace your fuel filters regularly. Contaminated fuel is the primary cause of premature plunger and barrel wear. If the engine is not used for extended periods, consider using a fuel stabilizer. Always replace the plunger and barrel as a matched set to maintain precise clearances.