Std 107mm Engine Piston 5336107 4934860 4376353 For Cummins Qsb6.7 Isb6.7 Qsb 6.7l 6d107 Diesel

Product Details

Product Overview

This is a premium aftermarket replacement engine piston assembly, specifically designed for the Cummins QSB6.7, ISB6.7, and 6D107 diesel engine platforms. As a critical component of the power cylinder group, this piston features a standard (STD) bore diameter of 107mm, ensuring a precise fit for engine rebuilding or maintenance applications.

Manufactured under the brand, this piston assembly is a direct replacement for OEM part numbers 5336107, 4934860, and 4376353. It is commonly used in heavy-duty construction machinery, excavators, and commercial trucks that rely on the robust Cummins 6.7L engine architecture. Each unit is manufactured to meet or exceed original equipment specifications for reliable performance and longevity.

Please verify your engine’s specific model variant and existing piston size before installation. While this part is designed for the QSB6.7 and ISB6.7 series, always cross-reference with your engine serial number to confirm compatibility with your specific application.

Key Features & Benefits

• Precision Engineering: Manufactured to strict tolerances with a 107mm STD bore diameter, ensuring consistent compression ratios and optimal combustion efficiency.
• High-Strength Construction: Crafted from high-strength aluminum alloy with an Alfin insert for the top ring groove, providing exceptional thermal resistance and durability under high-load conditions.
• Direct OEM Replacement: Designed to match the exact specifications of Cummins OEM pistons (5336107, 4934860, 4376353), simplifying the replacement process and reducing downtime.
• Enhanced Durability: The advanced material composition resists thermal cracking and wear, extending the service interval between overhauls in demanding environments.
• Rigorous Quality Control: Each piston undergoes outgoing inspection and machinery test reports are available upon request, ensuring consistent quality and dimensional accuracy.
• Versatile Application: Suitable for a wide range of heavy equipment, including excavators, wheel loaders, and on-highway trucks powered by the Cummins 6.7L engine family.

Technical Specifications

OEM Cross-Reference

This piston assembly is a direct aftermarket replacement for the following original equipment manufacturer (OEM) part numbers:

• Cummins OEM: 5336107
• Cummins OEM: 4934860
• Cummins OEM: 4376353
• Alternative Reference: 6107

Note: Always verify your engine’s specific part number before ordering. While these numbers cover the majority of QSB6.7 and ISB6.7 applications, variant-specific pistons may exist for certain engine builds.

Compatibility

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

• Engine Models: Cummins QSB6.7, Cummins ISB6.7, Cummins 6D107
• Vehicle/Equipment Types: Excavators, Wheel Loaders, Bulldozers, Heavy-duty Trucks, Agricultural Tractors, and Industrial Generator Sets

Important: Fitment is based on engine model and part number cross-reference. We recommend consulting your engine service manual or a qualified diesel mechanic to confirm compatibility with your specific machine make and model.

Global Supply & Distribution

We maintain a robust global supply network to serve international B2B buyers efficiently. Our stock is strategically managed to ensure fast dispatch from our distribution hub in Guangdong, China.

• Worldwide Shipping: We ship to all major markets including North America, South America, Europe, Southeast Asia, the Middle East, Africa, and Oceania.
• Fast Delivery: Orders are processed within 24-48 hours, with expedited shipping options available to major ports (Los Angeles, Rotterdam, Singapore, Dubai) and industrial centers.
• Logistics Expertise: We have extensive experience with international air freight, sea freight, and express courier services (DHL, FedEx, UPS, TNT).
• Trade Compliance: All products are exported in full compliance with international trade regulations, with proper documentation provided for customs clearance.

Quality Assurance

We are committed to providing parts that meet the highest standards of quality and reliability.

• Manufacturing Standards: Produced in ISO-certified facilities using advanced casting and machining processes.
• Testing: Each batch is subject to dimensional inspection and material analysis. Video outgoing inspection and machinery test reports are available upon request for quality verification.
• Warranty: This piston is backed by a 6 to 12-month warranty against manufacturing defects in materials and workmanship.
• Packaging: Parts are securely packed to prevent damage during transit, with options for neutral, original, or customized branding.

FAQ

Q: How do I confirm this piston will fit my Cummins QSB6.7 engine?
A: First, verify your engine’s model and serial number. This piston is designed for standard bore (STD) 107mm applications in QSB6.7 and ISB6.7 engines. If your engine has been previously rebored, you may require an oversized piston. We recommend measuring your cylinder bore and comparing it to the piston’s specified diameter. If uncertain, contact us with your engine serial number for verification.

Q: Does this piston come with piston rings and a wrist pin?
A: This listing is for the piston assembly only. Depending on your order, it may include the piston body with the Alfin insert. Piston rings and wrist pins are typically sold separately or as part of a complete piston kit. Please check the product listing details or contact our sales team to confirm what is included in your specific order.

Q: What is the recommended installation procedure for this piston?
A: Installation should be performed by a qualified diesel technician following the engine manufacturer’s service manual. Key steps include: cleaning the cylinder bore, lubricating the piston and rings, using a proper ring compressor, and torquing the connecting rod bolts to the specified settings. It is critical to check ring end gap and piston-to-wall clearance during installation to ensure proper engine function and longevity.