Product Overview

This high-performance Diesel Injection Pump Plunger (Part Number: P305 / 134153-2420) is a critical fuel system component engineered for heavy-duty diesel engines. Designed to deliver precise fuel metering and high-pressure injection, this plunger element ensures optimal combustion efficiency, reduced emissions, and maximum engine power output. We are a leading global supplier based in Shandong, China, offering competitive wholesale pricing with a monthly supply capacity of 5,000 pieces. Our products are exported worldwide, serving major markets including North America, South America, Europe, Southeast Asia, Africa, and the Middle East. With a 1-year warranty and 100% professional testing, this plunger is the ideal replacement for maintaining the performance of your excavator and heavy machinery.

Key Features & Benefits

• Premium Material: Manufactured from high-speed steel for exceptional wear resistance and long service life under extreme pressure.
• Precision Engineering: CNC-machined to exact OEM specifications for a perfect fit and optimal fuel delivery.
• Enhanced Performance: Ensures consistent fuel injection timing and atomization, leading to improved fuel economy and engine responsiveness.
• 100% Tested: Every unit undergoes rigorous professional testing to guarantee reliability and zero defects before shipping.
• Direct Replacement: Designed as a direct OE replacement, minimizing downtime and simplifying the installation process for mechanics.

Technical Specifications

OEM Cross-Reference

This plunger element is a direct replacement for the following OEM numbers:

• Primary OEM: 134153-2420
• Model Number: P305

Note: Please verify your existing part number. This cross-reference is provided for guidance; we recommend checking physical dimensions to ensure compatibility.

Compatibility

This fuel injection pump plunger is designed for use in specific heavy-duty diesel engines and machinery models:

• Engine Models: 8DC9-3A, 6D24-T1
• Vehicle/Equipment Models: Komatsu SK310-3 Excavator
• General Application: Suitable for various diesel-powered construction equipment, generators, and industrial machinery requiring these specific engine types.

Global Supply & Distribution

We are a dedicated exporter with a robust supply chain capable of delivering to any major port worldwide. Our logistics network ensures fast and reliable shipping to key industrial centers.

• Dispatch Ports: Any major port in China (e.g., Qingdao, Shanghai, Tianjin).
• Delivery Time: Typically 3-7 days after order confirmation.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), South America (Brazil, Chile), Southeast Asia (Indonesia, Vietnam), Middle East (UAE, Saudi Arabia), and Africa.
• Payment Methods: T/T (Bank Transfer), Western Union, PayPal.

Quality Assurance

We prioritize quality to ensure your machinery operates at peak performance.

• Manufacturing Standards: Produced in a certified facility in Shandong, China, adhering to strict international quality control processes.
• Testing: Each plunger is subjected to a 100% professional test to verify dimensional accuracy and pressure integrity.
• Warranty: All products come with a standard 1-year warranty against manufacturing defects.
• Certification: While specific certificates vary, our processes are designed to meet or exceed OE performance requirements.

FAQ

Q1: How do I confirm this P305 plunger will fit my injection pump?

A: The primary identification is the OEM number 134153-2420. Please check the number stamped on your old plunger element. Additionally, this part is specifically designed for the 8DC9-3A and 6D24-T1 engine models, commonly found in the Komatsu SK310-3 excavator. We recommend measuring the diameter and length of your original part (single package size: 10x5x5 cm) to confirm physical compatibility if the engine model is not exact.

Q2: What is the correct installation procedure for a fuel pump plunger?

A: Installation should be performed by a qualified diesel mechanic. The plunger is highly sensitive to cleanliness. Ensure the pump housing and barrel are perfectly clean before insertion. Lubricate the plunger with clean diesel fuel or assembly oil. Do not force the plunger; it should slide smoothly. Incorrect installation can lead to pump seizure or poor engine performance. Always refer to the service manual for your specific injection pump model.

Q3: What is the typical lifespan of this plunger element under normal operating conditions?

A: The lifespan depends heavily on fuel quality, contamination levels, and operating conditions. Using high-speed steel, this plunger is designed for durability. With clean fuel and proper maintenance (regular filter changes), you can expect a service life comparable to the original OEM part, often exceeding 5,000-8,000 hours. Contaminated fuel or water in the system will significantly reduce its lifespan. We recommend replacing the plunger and barrel as a matched set for optimal performance.

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 .