Product Overview

This high-quality Fuel Injection Pump Plunger and Barrel Assembly is an exact replacement for Caterpillar 3306 diesel engines. Designed for demanding B2B applications, this component ensures precise fuel metering and injection timing, restoring engine performance and efficiency. Sourced from a leading manufacturer in Shandong, China, our parts are supplied globally to markets in North America, Europe, the Middle East, and Asia-Pacific, supporting heavy equipment fleets with reliable and cost-effective solutions.

Key Features & Benefits

• Precision Engineering: Manufactured to strict OEM tolerances for a perfect fit and optimal fuel delivery.
• Superior Durability: Constructed from high-grade alloy steel with hardened surfaces to resist wear and extend service life.
• Direct Replacement: Designed for a simple, bolt-on installation with no modifications required, minimizing downtime.
• Restored Performance: Eliminates rough idling, hard starting, and power loss caused by worn plunger assemblies.
• Rigorous Testing: Each unit is pressure and leak-tested to ensure consistent performance under high-pressure injection conditions.

Technical Specifications

OEM Cross-Reference

This plunger assembly is a direct replacement for the following OEM and cross-reference numbers:

• Primary OEM: 4P9830, 7W6929
• Alternate OEM: 1W6541, 1P6400, 6N7525, 6N7527, 1086633

All numbers are interchangeable and fit the same Caterpillar 3306 injection pump application.

Compatibility

• Engine Models: Caterpillar 3306, 3306B, 3306C
• Equipment Applications: Excavators, Bulldozers, Wheel Loaders, Generator Sets, and Industrial Engines
• Injection Pump: Compatible with Caterpillar sleeve-metering fuel injection pumps used on the 3306 series.

Global Supply & Distribution

• Worldwide Shipping: We ship to over 50 countries via DHL, TNT, UPS, EMS, and FEDEX.
• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (Australia, Japan, Singapore), Middle East (UAE, Saudi Arabia), and Africa (South Africa, Nigeria).
• Fast Delivery: Orders are dispatched within 3-7 working days. Express shipping options available for urgent needs.
• Logistics Expertise: Experienced in customs documentation and international trade compliance for seamless delivery to major ports like Rotterdam, Los Angeles, and Shanghai.

Quality Assurance

• Manufacturing Standards: Produced in an ISO 9001 certified facility with strict quality control processes.
• Testing: Each plunger and barrel assembly undergoes 100% dimensional inspection and hydraulic pressure testing.
• Warranty: 6-month warranty against manufacturing defects. Our 24-hour customer service team is ready to assist with any technical issues.

FAQ

Q: How do I confirm this plunger fits my specific injection pump?
A: Verify the part number stamped on your existing plunger assembly. This unit is a direct cross for numbers 4P9830, 7W6929, and 1W6541 found on Cat 3306 engines. If your pump uses a different code, please contact us with your engine serial number for confirmation.

Q: What should I inspect during installation?
A: Ensure the plunger moves freely within the barrel without binding. Lubricate with clean diesel fuel before installation. Check the barrel seating surface for debris. It is highly recommended to replace the delivery valve and seal kit simultaneously for optimal pump performance.

Q: How can I maximize the lifespan of this plunger assembly?
A: Use clean, high-quality diesel fuel and replace your fuel filters regularly. Contaminated fuel is the primary cause of plunger wear. Ensure the injection pump timing is correctly set after installation to prevent excessive stress on the assembly.

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 .