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.

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 .