Product Overview

This is a genuine MAHLE engine piston, a critical component for the Komatsu PC300-7 excavator’s diesel engine. Engineered for durability and performance, this piston is manufactured to exact OEM specifications to ensure a perfect fit and reliable operation. We supply this high-quality part globally, with extensive experience serving major markets across North America, Europe, Asia-Pacific, and the Middle East.

Key Features & Benefits

• Precision Engineering: Manufactured to MAHLE’s stringent global standards, ensuring optimal compression, reduced blow-by, and maximum fuel efficiency.
• Superior Durability: Constructed from high-grade aluminum alloy for an excellent strength-to-weight ratio and superior thermal conductivity, resisting deformation under extreme engine loads.
• Enhanced Performance: Designed to restore original engine power and torque, contributing to smooth operation and reduced oil consumption in your Komatsu excavator.
• Direct OEM Replacement: Guaranteed fit and function as a direct replacement for the original part, minimizing downtime during engine overhaul or repair.
• Global Quality: Produced in a certified facility, this piston meets international quality benchmarks for heavy-duty diesel engine applications.

Technical Specifications

OEM Cross-Reference

This MAHLE piston directly replaces the following OEM part numbers:

• Komatsu: 3917707
• MAHLE Internal: L009189WT

It is functionally equivalent to the original piston assembly used in Komatsu 6CT 6D114 engines.

Compatibility

This piston is specifically designed for the following application:

• Engine Model: Komatsu 6CT 6D114 Diesel Engine
• Machine Application: Komatsu PC300-7 Hydraulic Excavator
• Typical Model Years: Compatible with PC300-7 excavators across their production run. Always verify your engine serial number for absolute confirmation.

Global Supply & Distribution

We are a leading supplier of genuine and OEM-equivalent engine components for the global heavy machinery market. Our logistics network ensures reliable delivery to key industrial hubs worldwide.

• Worldwide Shipping: We export to all major continents via air and sea freight.
• Key Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Poland, Netherlands), Asia-Pacific (Australia, Japan, Singapore, Indonesia), the Middle East (UAE, Saudi Arabia), and South America.
• Efficient Logistics: Fast container and LCL shipments to major ports like Los Angeles, Rotterdam, Singapore, and Jebel Ali. Air freight available for urgent orders.
• Trade Compliance: All documentation (Commercial Invoice, Packing List, Certificate of Origin) is provided for smooth customs clearance globally.

Quality Assurance

Every piston is subject to rigorous quality control to meet the performance demands of heavy-duty equipment.

• Manufacturing Standards: Produced in a MAHLE facility adhering to IATF 16949 automotive quality management standards.
• Material Certification: Raw materials are certified for composition and mechanical properties.
• Precision Machining: Critical dimensions (skirt diameter, pin bore, ring grooves) are 100% verified to ensure perfect fitment.
• Warranty: Backed by a standard warranty against manufacturing defects. Contact us for specific warranty terms.

FAQ

Q1: Is this a complete piston assembly, and does it include the wrist pin and rings?
A1: This listing is for the MAHLE piston. The original Komatsu part number 3917707 may refer to the piston alone or as part of a kit. Please confirm with our sales team regarding the specific inclusion of the piston pin and ring set to ensure you order all necessary components for your rebuild.

Q2: Can this piston be used in other Komatsu engine models besides the 6CT 6D114?
A2: No. This piston is engineered specifically for the bore, stroke, and combustion chamber profile of the Komatsu 6CT 6D114 engine. Using it in a non-specified engine can cause severe damage and void any warranty. Always use parts specified for your exact engine model and serial number.

Q3: What are the recommended installation procedures to ensure longevity?
A3: For optimal performance, we recommend: 1) Always replace pistons in a full set per engine. 2) Ensure the cylinder liner is within specified wear limits and properly honed. 3) Use new piston rings, wrist pins, and circlips. 4) Follow the OEM service manual for precise clearance checks, ring gap setting, and assembly lubrication procedures. Proper installation is critical for engine life.

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 .