Product Overview

This high-precision M30 Plunger Assembly is a critical fuel injection component engineered for excavator and heavy-duty diesel engines. Manufactured to exacting standards in China, it is supplied globally to meet the demands of the construction, mining, and industrial machinery sectors. We specialize in direct B2B export, ensuring reliable parts reach key markets worldwide with efficient logistics support.

Key Features & Benefits

• Premium Material Construction: Manufactured from high-grade alloy steel, hardened and precision-ground for exceptional wear resistance and long service life under high-pressure conditions.
• Precision Engineering: Features ultra-fine surface finishes and tight tolerances to ensure optimal fuel metering, consistent engine performance, and reduced emissions.
• Enhanced Durability: Designed to withstand the extreme pressures and contaminants common in heavy-duty diesel applications, minimizing downtime and maintenance costs.
• Direct Replacement: Engineered as a direct-fit component for seamless installation, restoring original equipment performance and reliability.
• Rigorous Quality Control: Each unit undergoes dimensional inspection and performance validation to guarantee it meets or exceeds OEM specifications.

Technical Specifications

OEM Cross-Reference

This M30 Plunger Assembly is designed to match the form, fit, and function of original components. It serves as a direct replacement for parts used in various fuel injection pump models. For precise compatibility, please verify your original part number. Common OEM and aftermarket references may include series numbers from major injection system manufacturers like Bosch, Denso, or Delphi, specific to M30-type pump assemblies.

Compatibility

This component is specifically designed for excavator engines and other heavy machinery utilizing fuel injection pumps that incorporate an M30 plunger assembly. It is commonly found in machines from leading brands such as Caterpillar, Komatsu, Hitachi, Volvo, and Doosan. Compatibility is determined by the injection pump model, not solely the engine model. Please consult your equipment service manual or contact our technical team with your pump model number for confirmation.

Global Supply & Distribution

We are a professional B2B exporter with a robust global supply chain. Our products are shipped worldwide from major Chinese ports, with established logistics partnerships ensuring reliable delivery to North America, Europe, Asia-Pacific, the Middle East, Africa, and South America. We offer flexible shipping terms (FOB, CIF, DAP) and expedited services to major industrial hubs and ports. Our expertise in international trade compliance ensures smooth customs clearance for our clients.

Quality Assurance

Every M30 Plunger Assembly is produced in ISO-certified facilities utilizing advanced CNC machining and grinding technology. Our multi-stage quality control process includes material certification, dimensional verification with CMM, surface finish analysis, and functional testing. We stand behind our products with a standard warranty against manufacturing defects. Certificates of Compliance (CoC) are available upon request to support your own quality management systems.

FAQ

Q1: How do I confirm this plunger assembly is compatible with my excavator’s engine?
A1: Compatibility is based on the specific model of the fuel injection pump, not just the engine. The most reliable method is to match the part number stamped on your original plunger assembly or refer to the pump’s service parts manual. Providing the pump model and engine serial number to our support team can facilitate accurate verification.

Q2: What are the critical installation precautions for this precision component?
A2> Installation must be performed in an impeccably clean environment. The plunger and its mating bore must be lubricated with clean diesel fuel during assembly—never dry. Avoid any impact or misalignment during installation, as this can damage the fine surface finish. It is highly recommended to replace the plunger as part of a comprehensive fuel injection pump overhaul kit for optimal performance and longevity.

Q3: What is the typical lead time for orders shipping to regions like Europe or North America?
A3> For standard container (LCL/FCL) shipments to major ports in Europe or North America, lead times typically range from 30-45 days door-to-door, including manufacturing, inland logistics, and ocean freight. For urgent requirements, we can arrange air freight with lead times of 7-10 days to major airports. Exact timelines are provided with every quotation based on order volume and destination.

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 .