NT855 Diesel Engine Piston Ring Set 6 Cylinder 4 Stroke 14L Displacement 140x152mm Bore x Stroke

Product Details

Product Overview

This is a brand new, high-quality NT855 Piston Ring Set designed specifically for the Cummins NT855 series diesel engine. This set is engineered for 6-cylinder, 4-stroke, 4-valve configurations, featuring a bore of 140mm and a stroke of 152mm, resulting in a 14-liter displacement. It is a direct replacement part ideal for maintaining or rebuilding generator sets, marine engines, and mining equipment.

Each piston ring is manufactured to meet stringent OEM specifications, ensuring a precise fit and reliable performance. This set is a critical component for restoring compression, reducing oil consumption, and maximizing engine efficiency in heavy-duty applications. It is a common service item for Cummins NT855 engines used in power generation, industrial, and marine sectors.

Key Features & Benefits

• OEM Specification Fit: Manufactured to exact OEM dimensions (140x152mm) for a direct, hassle-free installation in Cummins NT855 engines.
• Enhanced Compression: Restores engine compression, leading to improved fuel efficiency and increased power output.
• Reduced Oil Consumption: High-quality ring design minimizes oil blow-by, lowering operational costs and extending oil change intervals.
• Durable Construction: Built from wear-resistant materials to withstand high temperatures and pressures found in generator and mining applications.
• Complete Set: Includes all necessary rings for a full 6-cylinder engine rebuild, providing a comprehensive solution for your maintenance needs.
• Rigorous Testing: Each set undergoes outgoing inspection and machinery test reports are provided to ensure quality and reliability.

Technical Specifications

OEM Cross-Reference

This piston ring set is a direct replacement for the following OEM part numbers for the Cummins NT855 engine:

• Cummins Part Number: 3070225
• Cummins Part Number: 3066400
• Cummins Part Number: AR89000
• Alternative Reference: 8-98023-526-0 (when verified)

Note: Always verify the specific part number and engine serial number to confirm compatibility before purchase. This set is designed for the standard NT855 bore size.

Compatibility

This piston ring set is commonly used for the following applications:

• Engine Models: Cummins NT855, NT855-M, NT855-G, NTA855.
• Common Applications: Diesel generator sets, marine propulsion engines, mining haul trucks and loaders, industrial pumps, and construction equipment.
• Vehicle/Equipment Examples: Commonly found in Caterpillar, Komatsu, and other heavy equipment that utilize the Cummins NT855 engine platform.

Disclaimer: This product is an aftermarket replacement part. Compatibility is based on engine model and application. Please check your engine’s specifications to ensure a correct fit.

Global Supply & Distribution

We are a dedicated supplier of high-quality diesel engine parts, with a robust global distribution network. We ship worldwide from our central warehouse in Chongqing, China, ensuring fast and reliable delivery to major industrial hubs.

• Markets Served: North America, Europe, Southeast Asia, Middle East, Africa, and South America.
• Logistics: We partner with leading freight carriers to offer sea, air, and express delivery options. We provide fast shipping to major ports like Houston, Rotterdam, Shanghai, and Jebel Ali.
• Export Experience: Our team is experienced in international trade, handling customs documentation and ensuring compliance with global shipping regulations.

Quality Assurance

Every NT855 piston ring set is manufactured under strict quality control standards to ensure long-lasting performance. We stand behind the reliability of our parts.

• Manufacturing Standards: Produced in ISO-certified facilities with advanced machining and heat-treating processes.
• Warranty: Comes with a standard 6-month warranty, with a minimum of one-year coverage against manufacturing defects.
• Testing: Each batch is subject to a machinery test report and video outgoing inspection to verify dimensional accuracy and material integrity.

FAQ

Q: Is this piston ring set a direct fit for my Cummins NT855 generator engine?
A: Yes, this set is specifically designed for the Cummins NT855 engine with a 140x152mm bore and stroke. It is a direct replacement for OEM rings. However, we always recommend verifying your engine’s serial number and the existing ring dimensions to ensure 100% compatibility before installation.

Q: What is included in the set? Does it include rings for all 6 cylinders?
A: Yes, this is a complete set containing all the necessary compression rings and oil rings for all 6 cylinders of the NT855 engine. You will receive enough rings to perform a full top-end overhaul on one engine.

Q: What is the recommended installation procedure for these rings?
A: Installation should be performed by a qualified diesel mechanic. Standard procedure includes: cleaning the piston ring grooves, checking ring end-gap in the cylinder bore, and staggering the ring gaps during installation to prevent blow-by. Always use a proper ring expander tool to avoid damaging the rings.