Product Overview

This high-precision Lucas Fuel Injection Plunger is a critical component for diesel engine fuel systems, designed to deliver optimal fuel metering and injection pressure. Manufactured to original equipment (OE) specifications, this plunger ensures reliable engine performance and fuel efficiency. We supply to global markets including North America, Europe, Asia-Pacific, the Middle East, and South America, supporting a wide range of industrial, agricultural, and automotive diesel applications.

Key Features & Benefits

• Premium Material: Constructed from high-speed steel for exceptional wear resistance and long service life under high-pressure conditions.
• Precision Engineering: Manufactured to standard size with tight tolerances for a perfect fit and consistent fuel delivery.
• Direct Replacement: Designed as a direct OE replacement, ensuring seamless installation without modifications.
• Enhanced Durability: Reduces fuel system wear, minimizes downtime, and extends the life of the injection pump.
• Strict Quality Control: Each unit is tested to meet industry standards for pressure and sealing integrity.

Technical Specifications

OEM Cross-Reference

This plunger is compatible with the following OEM and interchanges numbers:

• 512505-31
• 512505-54
• 512506-53
• 512506-63
• 512506-65
• 512506-70
• 512506-72 (Primary OE Reference)
• 512506-74

These numbers cover multiple variants used in Lucas CAV and Delphi fuel injection systems. Please verify your existing part number for exact cross-reference.

Compatibility

This fuel injection plunger is designed for use in a variety of diesel engines and fuel injection pumps, including:

• Engine Types: Industrial, agricultural, and automotive diesel engines.
• Fuel System: Lucas CAV / Delphi rotary and inline injection pumps.
• Vehicle Applications: Suitable for trucks, tractors, generators, and construction machinery.

Note: Always verify your pump model and existing plunger number to ensure compatibility.

Global Supply & Distribution

We provide worldwide shipping with fast and reliable logistics to major ports and industrial centers. Our distribution network covers:

• North America: USA, Canada, Mexico
• Europe: UK, Germany, France, Netherlands, Poland
• Asia-Pacific: Australia, Japan, South Korea, Southeast Asia
• Middle East & Africa: UAE, Saudi Arabia, South Africa
• South America: Brazil, Argentina, Chile

With extensive export experience, we ensure proper documentation and customs compliance for smooth international transactions.

Quality Assurance

Our fuel plungers are manufactured under strict quality control standards in Shandong, China. Key quality measures include:

• ISO 9001 certified production processes.
• 100% dimensional and pressure testing before shipment.
• High-speed steel material certification for hardness and durability.
• 6-month warranty against manufacturing defects.

FAQ

Q1: How do I know if this plunger fits my injection pump?

A: Please check the existing part number on your old plunger. If it matches any of the numbers listed (512505-31, 512506-72, etc.), it is a direct replacement. Also, ensure your pump model is a Lucas CAV or Delphi type. If unsure, provide your pump model or engine specifications for verification.

Q2: What is the installation procedure for this fuel plunger?

A: Installation should be performed by a qualified diesel technician. Clean the pump bore thoroughly, lubricate the new plunger with clean diesel fuel or assembly oil, and insert it carefully to avoid scoring. Ensure the plunger rotates freely and aligns with the control sleeve. Torque all components to manufacturer specifications.

Q3: How can I maximize the lifespan of this plunger?

A: Use clean, high-quality diesel fuel with proper filtration. Regularly replace fuel filters and water separators. Avoid running the engine with contaminated fuel or air in the system. Adhere to the recommended service intervals for the injection pump.

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 .