Product Overview

This is a high-performance replacement piston designed for Cummins ISDE and QSB series diesel engines. Engineered to meet or exceed OEM specifications, this part is a critical component for engine rebuilds and repairs in commercial and industrial machinery. We supply this part globally, with significant experience serving key markets in North America, Europe, the Middle East, and the Asia-Pacific region, ensuring reliable performance for your heavy-duty applications.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM dimensions and tolerances for a perfect fit and optimal engine performance.
• Enhanced Durability: Constructed from high-grade materials to withstand the high pressures and temperatures of diesel combustion cycles.
• Optimized for Performance: Designed to restore engine compression, power output, and fuel efficiency in Cummins engines.
• Rigorous Quality Control: Each piston undergoes thorough inspection and testing to ensure it meets strict performance standards.
• Global Logistics Support: Packaged securely for international shipping and backed by our efficient supply chain to major industrial hubs and ports worldwide.

Technical Specifications

OEM Cross-Reference

This part is a direct replacement for the following OEM part number:

• Cummins: 5255257

Please verify your engine’s specific model and serial number for absolute compatibility. Cross-referencing with your existing part is recommended.

Compatibility

Primary Engine Models: Cummins ISDE, ISDE140, ISDE185, and QSB series diesel engines.

Vehicle & Machinery Application: This piston is suitable for a wide range of equipment powered by the above engine series, including but not limited to:

• Heavy-Duty Trucks
• Excavators and Loaders
• Bulldozers and Construction Equipment
• Industrial and Transit Buses
• Forklifts and Material Handling Equipment

Global Supply & Distribution

We are a trusted B2B supplier with extensive experience in international export. Our logistics network ensures efficient delivery to major global markets:

• Key Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East, and Africa.
• Fast Delivery: We prioritize shipments to major industrial ports and logistics centers, offering various shipping terms (FOB, CIF, DAP) to suit your needs.
• Export Compliance: All shipments are prepared with complete commercial documentation, including machinery test reports and certificates of origin, ensuring smooth customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in a certified facility adhering to stringent quality management processes.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Testing & Inspection: Every batch is subject to machinery test reports. Video outgoing-inspection is available upon request to verify quality before shipment.

FAQ

Q: How can I confirm this piston will fit my specific Cummins engine?
A: The most reliable method is to match the part number (5255257) with the one from your original engine parts list or the old piston. Also, verify your engine’s model designation (e.g., ISDE185) and serial number.

Q: Is this piston sold as a single unit or as part of a set?
A> This piston is sold as a single item. For a complete engine overhaul, you will need to purchase one piston per cylinder. We recommend replacing pistons in sets for balanced engine performance.

Q: What documentation is provided with international orders?
A> We provide full export documentation, including a commercial invoice, packing list, and a machinery test report. A video outgoing-inspection can also be arranged prior to shipment for quality verification.

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 .