Product Details

Product Overview

This genuine-quality Cummins QSL9.3 Piston, part number 5343091, is a critical component for maintaining the power and efficiency of your Cummins QSL9.3 diesel engine. Designed for heavy-duty applications, this piston ensures optimal combustion, reduced friction, and extended engine life. We are a leading global supplier of diesel engine parts, serving major markets across North America, Europe, Asia-Pacific, the Middle East, and South America. With a robust logistics network, we offer fast and reliable shipping to industrial centers and ports worldwide, ensuring your operations stay on track.

Key Features & Benefits

• Superior Durability: Manufactured from high-strength aluminum alloy with a reinforced steel insert, this piston withstands extreme combustion pressures and temperatures for long-lasting performance.
• Optimized Combustion: The precisely engineered bowl geometry ensures complete fuel burn, improving fuel efficiency and reducing emissions.
• Reduced Friction: Advanced skirt coating minimizes friction against the cylinder wall, enhancing engine responsiveness and reducing wear.
• OEM Standard Quality: Built to meet or exceed Cummins original equipment specifications, ensuring perfect fitment and reliable operation.
• Rigorous Testing: Each piston undergoes strict quality control checks, including dimensional inspection and material analysis, to guarantee top-tier performance.

Technical Specifications

OEM Cross-Reference

This piston is a direct replacement for the following OEM part numbers:

• Cummins: 5343091, 3970795, 3970796

Note: Always verify compatibility with your specific engine serial number before purchase.

Compatibility

• Engine Models: Cummins QSL9.3 (all variants).
• Applications: Heavy-duty trucks, construction equipment (excavators, loaders), agricultural machinery, and industrial generators powered by the QSL9.3 engine.
• Year Range: Primarily for engines manufactured from 2007 onwards, but check your engine serial number for exact fitment.

Global Supply & Distribution

We provide worldwide shipping with fast delivery to major ports and industrial centers, including:

• North America: Los Angeles, Houston, New York, Toronto, Vancouver.
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe.
• Asia-Pacific: Shanghai, Singapore, Sydney, Tokyo.
• Middle East & Africa: Dubai, Jeddah, Durban.
• South America: Santos, Buenos Aires, Valparaiso.

With extensive export experience and full compliance with international trade regulations, we ensure your parts arrive safely and on time, regardless of your location.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001:2015 certified facilities, adhering to strict quality management systems.
• Testing: Each piston undergoes 100% dimensional inspection, material hardness testing, and visual quality checks.
• Warranty: Covered by a 12-month warranty against manufacturing defects, providing peace of mind for your investment.

FAQ

Q: Is this piston a direct fit for my Cummins QSL9.3 engine?
A: Yes, part number 5343091 is an OEM-standard replacement piston designed specifically for the Cummins QSL9.3 engine. However, we recommend verifying your engine’s serial number to ensure compatibility, especially for later model years with minor design updates.

Q: What is the recommended installation procedure for this piston?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: cleaning the cylinder bore thoroughly, lubricating the piston rings and skirt with clean engine oil, using a ring compressor to install the piston, and torquing the connecting rod bolts to the manufacturer’s specifications. Always refer to the Cummins service manual for your specific engine model.

Q: Can I use this piston with aftermarket rings and liners?
A: Yes, this piston is designed to work with standard aftermarket rings and liners that match OEM specifications. For optimal performance and longevity, we recommend using a matched set of piston, rings, and liner from a reputable supplier. Mixing components from different manufacturers may affect clearances and wear rates.

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 .