5305838 3950502 Piston for Cummins 6L9.5 6LT9.5 L9.5 Diesel Engine Parts

Product Details

Product Overview

This high-quality replacement piston, identified by OEM numbers 5305838 and 3950502, is specifically engineered for the Cummins 6L9.5, 6LT9.5, and L9.5 diesel engine platforms. Designed to meet original equipment specifications, this component is a critical part of the engine’s combustion system, ensuring optimal compression and efficient power delivery.

Commonly utilized in heavy-duty applications including excavators, trucks, forklifts, bulldozers, buses, and loaders, this piston is manufactured to withstand the high thermal and mechanical stresses of commercial diesel operation. It serves as a direct replacement for worn or damaged pistons, helping to restore engine performance and reliability.

Key Features & Benefits

• OEM Specification Compliance: Manufactured to match the exact dimensions and tolerances of the original Cummins 5305838 and 3950502 pistons, ensuring a precise fit and reliable function.
• Durable Construction: Built from high-strength materials to resist thermal fatigue, wear, and the high combustion pressures typical of turbocharged diesel engines.
• Engine Performance Restoration: Helps restore lost compression, reduce oil consumption, and improve overall engine power and fuel efficiency when replacing worn components.
• Verified Quality: Each unit undergoes outgoing inspection and a machinery test report is provided, confirming dimensional accuracy and structural integrity before shipment.
• Versatile Application: Suitable for a wide range of heavy equipment, from construction machinery to on-highway trucks and industrial power units.
• Cost-Effective Solution: Offers a competitive price point without compromising on quality, providing excellent value for fleet maintenance and engine overhaul projects.

Technical Specifications

OEM Cross-Reference

This piston is a direct replacement for the following original equipment manufacturer numbers:

• Cummins OEM: 5305838
• Cummins OEM: 3950502

Always verify the part number on your existing piston or consult your engine’s parts manual to ensure correct cross-reference before ordering.

Compatibility

This piston is commonly used for the following engine models and applications:

Engine Models: Cummins 6L9.5, 6LT9.5, L9.5

Vehicle/Equipment Applications: Excavators, Trucks, Forklifts, Bulldozers, Buses, Loaders, and other heavy machinery utilizing the specified Cummins engine platforms. Fitment is inferred based on engine model compatibility; we recommend confirming with your equipment manufacturer’s documentation.

Global Supply & Distribution

We offer worldwide shipping capabilities, ensuring that critical engine parts like this piston can reach your location efficiently. Our distribution network serves major markets across North America, Europe, Asia-Pacific, the Middle East, Africa, and South America.

We provide fast and reliable delivery to major ports and industrial centers, including Los Angeles, Rotterdam, Shanghai, Dubai, and Singapore. With extensive export experience and compliance with international trade standards, we streamline the logistics process for B2B buyers globally, whether for single-unit purchases or bulk fleet orders.

Quality Assurance

This product is manufactured under strict quality control standards to ensure reliability and performance in demanding environments.

• Inspection: Video outgoing inspection is provided to verify part condition before shipping. A machinery test report is also available to confirm dimensional and performance specifications.
• Warranty: Backed by a 6-month warranty against manufacturing defects, providing peace of mind for your purchase.
• Testing: Each piston is checked for critical parameters including diameter, pin bore size, ring groove dimensions, and overall structural integrity.

FAQ

Q1: How can I confirm this piston (5305838/3950502) will fit my engine?
A: First, verify your engine model is a Cummins 6L9.5, 6LT9.5, or L9.5. Then, locate the part number on your existing piston (stamped on the top or side). If it matches 5305838 or 3950502, this is the correct replacement. We recommend cross-referencing with your engine’s parts manual for absolute confirmation.

Q2: What other components should I replace when installing a new piston?
A: For a successful engine overhaul, it is highly recommended to replace the piston rings, cylinder liners, and connecting rod bearings simultaneously. Always use new gaskets and seals. Ensure the cylinder bore is properly measured and honed to the correct clearance for the new piston to prevent premature wear or seizure.

Q3: What is the recommended break-in procedure after installing new pistons?
A: After assembly, start the engine and allow it to idle until it reaches normal operating temperature. Avoid high RPMs or heavy loads for the first 50-100 hours of operation. Vary the engine speed during this period to help seat the piston rings properly. Monitor oil pressure and coolant temperature closely during the break-in period and perform an oil change after the initial break-in is complete.