Product Details

Product Overview

This is a premium, brand-new Cylinder Head Assembly, specifically engineered for the Cummins 6D114 diesel engine, which powers the Komatsu PC300-8 excavator. As a critical component of the engine’s top end, this assembly (OEM number: C5339588) ensures optimal combustion chamber sealing and efficient airflow. We supply this high-demand part to major markets globally, including North America, Europe, Asia-Pacific, the Middle East, and Africa, supporting heavy machinery fleets with reliable, long-lasting performance.

Key Features & Benefits

• OEM Specification: Manufactured to meet or exceed original Cummins specifications, ensuring a perfect fit and seamless replacement for the C5339588 part.
• Superior Casting: Crafted from high-grade cast iron for exceptional thermal stability and resistance to warping under extreme operating temperatures.
• Precision Machining: Valve seats and guides are precisely machined to reduce wear and maintain optimal valve sealing, maximizing engine compression and power output.
• Enhanced Durability: Designed to withstand the high stress and vibration of heavy-duty excavator applications, offering a significantly extended service life compared to inferior aftermarket parts.
• Plug-and-Play Installation: Comes pre-assembled with valve guides and seats (where applicable), reducing installation time and minimizing the risk of assembly errors.

Technical Specifications

OEM Cross-Reference

This Cylinder Head Assembly is a direct replacement for the following OEM part numbers:

• Cummins: C5339588
• Komatsu: 6240-11-3100 (Cross-reference)
• Alternative/Interchange: 5339588

Compatibility

• Primary Engine: Cummins 6D114 (6CT8.3)
• Primary Equipment: Komatsu PC300-8 Excavator
• Other Applications: This cylinder head may also be compatible with other heavy machinery utilizing the same Cummins 6D114 engine platform, including specific models of loaders and bulldozers. Please verify your engine serial number for exact fitment.

Global Supply & Distribution

• Worldwide Shipping: We offer fast and reliable shipping via sea (FCL/LCL), air (DDP/DDU), and express couriers (DHL, FedEx, UPS) to any global destination.
• Major Markets Served: Our parts are exported to North America (USA, Canada), Europe (Germany, UK, Netherlands), Asia-Pacific (Australia, Singapore, UAE), and South America (Chile, Brazil).
• Efficient Logistics: We maintain strong partnerships with freight forwarders to ensure quick clearance and delivery to major ports and industrial centers, minimizing your downtime.
• Trade Compliance: All products are sourced and exported in full compliance with international trade laws and regulations.

Quality Assurance

• Manufacturing Standards: Produced under strict ISO 9001:2015 quality management systems.
• Testing: Each cylinder head undergoes rigorous pressure testing and dimensional inspection to ensure zero defects.
• Warranty: Backed by a comprehensive 6-month warranty against manufacturing defects, providing you with peace of mind.

FAQ

Q1: Is this cylinder head a direct bolt-on replacement for my Komatsu PC300-8?
A1: Yes, this assembly is designed as a direct replacement for the OEM part number C5339588. It is machined to exact specifications and includes the necessary pre-installed components (valve guides and seats) for a straightforward installation. However, we always recommend verifying your engine serial number to confirm compatibility.

Q2: What is the recommended installation procedure for this cylinder head?
A2: Installation should be performed by a qualified diesel mechanic. Key steps include: ensuring the engine block deck is clean and flat, using a new OEM-spec head gasket, applying the correct torque sequence and values (please refer to the Cummins service manual for the 6D114 engine), and properly adjusting the valve lash after installation.

Q3: How does this aftermarket part compare to an original Cummins cylinder head?
A3: This part is manufactured to meet or exceed OEM quality standards. It uses high-grade cast iron and undergoes rigorous testing. While it is not an OEM-branded part, it offers equivalent performance and durability at a significantly more cost-effective price point, making it a popular choice for fleet maintenance and repair shops.

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 .