Product Overview

This high-quality diesel engine fuel pump plunger and piston barrel assembly, identified by part numbers 512506-72 and 512506-65, is a critical component for maintaining precise fuel injection in diesel engines. Manufactured to rigorous standards, this assembly ensures optimal engine performance, fuel efficiency, and reduced emissions. We ship globally from our strategic locations in Shandong, China, serving major markets across North America, Europe, Asia-Pacific, the Middle East, and South America with fast and reliable logistics.

Key Features & Benefits

• Precision Engineering: Manufactured to exacting tolerances for a perfect fit and reliable fuel metering.
• Superior Durability: Constructed from high-grade alloy steel with advanced heat treatment for exceptional wear and corrosion resistance.
• Enhanced Performance: Restores fuel injection pressure and timing, improving engine power, throttle response, and fuel economy.
• Reliable Operation: Reduces the risk of misfires, rough idling, and hard starting, ensuring consistent performance under demanding conditions.
• Cost-Effective Solution: A direct replacement for worn or failed OEM parts, providing a high-quality alternative to expensive dealer parts.

Technical Specifications

OEM Cross-Reference

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

• 512506-72
• 512506-65

Please verify your existing part number to ensure compatibility. These numbers are often found stamped directly on the component or in your engine’s service manual.

Compatibility

This assembly is designed for use in a wide range of diesel engines, commonly found in:

• Engine Applications: Diesel engines for automotive, agricultural, construction, and industrial equipment.
• Vehicle Models: Compatible with various diesel cars, trucks, and machinery using fuel injection pumps that accept these specific plunger dimensions.

Note: This is a precision component. We strongly recommend consulting your engine or fuel injection pump service manual to confirm the correct part number for your specific application.

Global Supply & Distribution

We offer a comprehensive global supply and distribution network to meet the needs of B2B clients worldwide:

• Worldwide Shipping: We partner with DHL, UPS, FedEx, EMS, and TNT to ensure fast and secure delivery to any destination.
• Major Markets Served: Our products are exported to North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy), Asia-Pacific (Japan, Korea, Australia), the Middle East (UAE, Saudi Arabia), and South America (Brazil, Argentina).
• Fast Dispatch: Orders are processed and shipped within 5-7 working days from our warehouses near the ports of Qingdao and Shanghai.
• Trade Compliance: We have extensive experience in international trade and ensure all shipments comply with export regulations.

Quality Assurance

We are committed to providing products that meet the highest standards of quality and reliability:

• Manufacturing Standards: Our components are manufactured in ISO-certified facilities, adhering to strict quality control processes.
• Rigorous Testing: Each plunger and barrel assembly is tested for dimensional accuracy, surface finish, and pressure integrity before shipment.
• Warranty: All products are backed by a 6-month warranty against manufacturing defects, providing you with peace of mind.

FAQ

Q1: How do I confirm if part numbers 512506-72 or 512506-65 are the correct replacements for my fuel pump?

A: The most reliable method is to physically remove the old plunger and barrel assembly and compare it to the new one. The part number is usually etched on the side of the barrel. Alternatively, consult your engine’s service manual or the fuel injection pump manufacturer’s parts catalog. If you are unsure, please contact our support team with your pump model and serial number for verification.

Q2: What are the signs that my fuel pump plunger and barrel assembly needs to be replaced?

A: Common symptoms of a worn plunger and barrel assembly include: hard starting, engine misfires or rough idling, reduced engine power and acceleration, increased fuel consumption, black smoke from the exhaust, and unstable engine speed. A worn assembly cannot maintain the high fuel pressure required for proper injection.

Q3: Do you have any special installation tips for this component?

A: Yes, installation requires extreme cleanliness. Even microscopic dirt can cause immediate failure. Always work in a clean environment, wear clean gloves, and lubricate the plunger with clean diesel fuel or assembly oil before installation. Do not force the parts together; they should slide smoothly. It is also highly recommended to replace the delivery valve and have the injection pump calibrated on a test bench after installation to ensure optimal performance.