Product Overview

This high-performance P Type Fuel Injection Plunger and Barrel Assembly is a critical component for diesel engine fuel systems. Manufactured in Shandong, China, this precision-ground set is designed for direct replacement and repair of injection pumps. Our products are exported globally, serving major markets in North America, Europe, Southeast Asia, and the Middle East. Whether you are a distributor, workshop, or fleet manager, this plunger and barrel set offers a reliable solution for restoring engine performance.

Key Features & Benefits

• Premium Chrome Steel Construction: Made from high-quality chrome steel for exceptional hardness, wear resistance, and long service life under high-pressure conditions.
• Precision Engineering: Manufactured to exact OEM tolerances ensuring a perfect seal, optimal fuel atomization, and consistent engine power output.
• Versatile Compatibility: Covers a wide range of P-type pump applications including models P44, P49, P51, P55, P78, P84, P103, and P112.
• Cost-Effective Solution: A direct replacement for worn or damaged parts, helping to avoid costly pump replacements while restoring fuel efficiency.
• Reliable Performance: Designed for the repair and maintenance of diesel engines in trucks, agricultural machinery, and industrial equipment.

Technical Specifications

OEM Cross-Reference

This plunger and barrel assembly is designed to directly replace or serve as an alternative to the following OEM models and part numbers:

• P44
• P49
• P51
• P55
• P78
• P84
• P103
• P112

Note: Please verify your existing part number against the list above to ensure correct fitment.

Compatibility

• Engine Type: Diesel engines utilizing P-type in-line fuel injection pumps.
• Vehicle/Equipment Applications: Suitable for a wide range of diesel engine cars, trucks, buses, agricultural tractors, and construction machinery.
• Pump Model: Specifically designed for P-type pump bodies (P44, P49, P51, P55, P78, P84, P103, P112).

Global Supply & Distribution

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

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Australia, Japan, South Korea, Southeast Asia), Middle East (UAE, Saudi Arabia), Africa, and South America.
• Shipping Capabilities: We handle export documentation and customs clearance for smooth international transactions. Delivery options include express (DHL, FedEx, UPS), air freight, and sea freight.
• Trade Compliance: We adhere to international trade standards to ensure your order arrives safely and on time.

Quality Assurance

• Manufacturing Standard: Produced in a facility with strict quality control processes, utilizing high-grade chrome steel for superior hardness and wear resistance.
• Testing: Each plunger and barrel set is inspected for dimensional accuracy, surface finish, and sealing performance to meet high-quality standards.
• Warranty: Backed by a 4-month warranty against manufacturing defects, providing peace of mind for your purchase.

FAQ

Q1: How do I confirm this plunger and barrel fits my P-type pump?
A: Please check the model number stamped on your current pump body or plunger. This set is confirmed to fit P-type pumps designated as P44, P49, P51, P55, P78, P84, P103, and P112. If you are unsure, please contact our support team with your pump’s model number for verification before ordering.

Q2: What is the correct procedure for installing a new plunger and barrel?
A: Installation should be performed by a qualified diesel mechanic. The work area must be extremely clean to prevent contamination. Lubricate the new parts with clean diesel fuel during installation. Ensure the plunger rotates freely in the barrel without binding. Torque the retaining screws to the manufacturer’s specifications to avoid distortion.

Q3: What causes a plunger and barrel to wear out prematurely?
A: The most common causes are contaminated fuel (dirt, water), using incorrect or poor-quality fuel, and lack of regular fuel filter maintenance. Air in the fuel system can also cause cavitation damage to the precision surfaces. Using a high-quality fuel filter and maintaining a clean fuel supply will significantly extend the life of your injection pump components.