N14 Piston 4059302 3087634 Cummins Engine Parts for Industrial & Marine Applications

Product Details

Product Overview

This heavy-duty piston assembly, identified by OEM part numbers 4059302 and 3087634, is specifically engineered for the Cummins N14 diesel engine platform. As a critical component within the power cylinder group, this piston is manufactured to original equipment (OEM) size specifications, ensuring a precise fit and reliable seal within the engine block.

Designed to withstand the extreme pressures and temperatures of high-performance diesel operation, this piston is a direct replacement for standard N14 engine rebuilds. It is ideally suited for a wide range of demanding applications, including heavy construction equipment, industrial power units, agricultural machinery, marine propulsion, and generator sets. Whether you are overhauling a fleet of trucks or servicing a stationary genset, this piston provides the durability required for long service intervals.

Key Features & Benefits

• Precision Engineering: Manufactured to strict OEM dimensional tolerances (OEM Size) to guarantee a perfect fit within the N14 cylinder bore without the need for modification.
• High-Temperature Alloy: Constructed from a durable aluminum alloy designed to resist thermal expansion and maintain structural integrity under extreme combustion pressures.
• Enhanced Oil Control: Features optimized ring groove geometry to work in conjunction with standard piston rings, reducing oil consumption and blow-by for cleaner operation.
• Direct Fit Replacement: Designed as a direct swap for the original Cummins pistons, simplifying the engine rebuild process and reducing downtime.
• Rigorous Quality Control: Each piston undergoes a machinery test report and video outgoing inspection to ensure it meets performance standards before shipment.
• Versatile Application: Proven compatibility across multiple sectors including construction, industrial, agriculture, marine, and power generation.

Technical Specifications

OEM Cross-Reference

This piston is a direct cross-reference for the following original equipment manufacturer (OEM) numbers. Use these numbers to verify compatibility with your existing engine parts catalog:

• Cummins OEM: 4059302
• Cummins OEM: 3087634

Note: Always confirm your engine serial number and existing piston part number to ensure a match.

Compatibility

This piston is commonly used for the Cummins N14 diesel engine. The N14 platform is a widely utilized heavy-duty engine found in various equipment. Common applications include:

• Construction: Excavators, bulldozers, wheel loaders
• Industrial: Air compressors, pumps, industrial generators
• Agriculture: Large tractors, combines, irrigation pumps
• Marine: Workboats, fishing vessels, auxiliary power units
• Power Generation: Genset engines for prime or standby power
• Handling: Forklifts, material handlers

Fitment is inferred based on the N14 engine model. Always verify physical dimensions and ring compatibility with your specific engine build.

Global Supply & Distribution

We offer worldwide shipping capabilities, ensuring that critical engine parts reach your location quickly and efficiently. Our logistics network supports major markets including:

• North America: Fast delivery to ports and industrial centers in the USA, Canada, and Mexico.
• Europe: Reliable shipping to EU countries including Germany, the UK, Netherlands, and France.
• Asia-Pacific: Direct supply to Australia, New Zealand, Singapore, and Japan.
• Middle East & Africa: Serving industrial hubs in the UAE, Saudi Arabia, South Africa, and Nigeria.
• South America: Efficient delivery to Brazil, Argentina, and Chile.

With experience in international trade compliance and export documentation, we ensure your order clears customs without delay.

Quality Assurance

Our manufacturing process adheres to strict quality control standards. Each piston is subject to a Machinery Test Report to verify dimensional accuracy and material integrity. Additionally, a Video Outgoing Inspection is provided upon request, allowing you to visually confirm the product’s condition before it leaves our facility. We back our parts with a 6-month warranty against manufacturing defects, and our team provides online technical support after the warranty period.

FAQ

Q: Will this piston fit my specific Cummins N14 engine variant?
A: This piston is designed for the standard N14 engine platform. However, due to variations in engine builds (e.g., different compression ratios or ring packs), we strongly recommend comparing the piston’s physical dimensions (diameter, pin bore, compression height) against your original part. Check the OEM numbers 4059302 or 3087634 on your existing piston for a direct match.

Q: What is the recommended installation procedure?
A: Professional installation is required. Ensure the cylinder bore is honed to the correct finish and clearance. Lubricate the piston pin and rings with clean engine oil during assembly. Use a proper ring compressor to avoid damaging the rings or piston lands. Always torque the connecting rod bolts to the manufacturer’s specifications.

Q: How should I maintain the piston for long service life?
A: Use high-quality diesel engine oil and adhere to the manufacturer’s recommended oil and filter change intervals. Ensure the engine’s cooling system is functioning correctly to prevent overheating. Avoid sustained over-fueling or operation at maximum load without proper warm-up. Regular inspection of the air intake system will prevent abrasive dust from wearing the piston and rings prematurely.