3926631 3802561 Std 102mm Engine Piston Kit For Cummins 4BT 3.9L 6BT 5.9L Diesel Engine

Product Details

Product Overview

This high-quality STD 102mm Engine Piston Kit is a direct replacement for critical Cummins B-series diesel engines, specifically designed for the 4BT 3.9L and 6BT 5.9L platforms. As a core component in the power cylinder assembly, this kit ensures proper compression and reliable combustion for demanding applications. The kit is engineered to meet or exceed specifications, providing a robust solution for engine overhaul or rebuild projects.

Commonly used in heavy-duty trucks, excavators, generators, and industrial machinery, this piston kit is a vital part for maintaining engine performance. It is a popular choice for workshop rebuilds and fleet maintenance, offering a cost-effective alternative to genuine parts without sacrificing quality. The kit includes the necessary components for a complete piston replacement, ensuring a precise fit for your Cummins 4BT or 6BT engine.

Key Features & Benefits

• Precision Engineering: Manufactured to exacting tolerances with a standard STD 102mm bore diameter, ensuring a perfect fit and optimal compression ratio for Cummins 4BT and 6BT engines.
• Durable Material Construction: Features a high-strength aluminum alloy piston body, designed for excellent heat dissipation and reduced thermal expansion, paired with a durable cast iron ring carrier for extended service life.
• Complete Kit Solution: Includes all necessary components (piston, rings, and pin) for a full piston replacement, simplifying your order and rebuild process.
• Rigorous Quality Control: Every kit undergoes a machinery test report and video outgoing inspection to verify dimensional accuracy and surface finish before shipment.
• OEM-Equivalent Performance: Designed as a direct replacement for numbers 3926631, 3802561, and 3802564, providing reliable performance for your engine rebuild.
• Versatile Application: Suitable for a wide range of machinery including trucks, excavators, and generators, making it an ideal stock item for parts distributors and repair shops.

Technical Specifications

Cross-Reference

This piston kit is a direct replacement for the following part numbers. Please verify your engine’s specific requirements before ordering.

• Cummins: 3926631, 3926632, 3802561, 3802564

Compatibility

This STD 102mm piston kit is specifically designed for use in the following engine models. It is commonly used for rebuilds and repairs in various equipment applications.

• Engine Models: Cummins 4BT 3.9L, Cummins 6BT 5.9L, Cummins 6BTA 5.9
• Common Applications: Truck, Excavator, Generator, Industrial Machinery, Agricultural Equipment

Global Supply & Distribution

We offer comprehensive global shipping solutions to meet the needs of international B2B buyers. Our logistics network ensures fast and reliable delivery to major ports and industrial centers worldwide.

• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Australia, Japan, Singapore, South Korea), and the Middle East (UAE, Saudi Arabia).
• Shipping Options: Express courier (DHL, FedEx, UPS) for small orders, air freight for urgent shipments, and sea freight (FCL/LCL) for bulk container orders.
• Trade Compliance: We have extensive export experience and can handle all necessary documentation for smooth customs clearance.

Quality Assurance

Our manufacturing process adheres to strict quality control standards to ensure every piston kit meets rigorous performance requirements.

• Manufacturing Standards: Produced in ISO 9001 certified facilities, ensuring consistent quality and traceability.
• Testing Procedures: Each kit undergoes a Machinery Test Report to verify dimensional accuracy and performance characteristics. Video Outgoing Inspection is provided for added transparency.
• Warranty: Backed by a 6 to 12-month warranty against manufacturing defects, providing peace of mind for your investment.

FAQ

Q: How can I verify that this 102mm piston kit will fit my Cummins 6BT engine?

A: First, confirm your engine model (e.g., 6BT 5.9L) and the bore size. This kit is specifically for a STD (Standard) 102mm bore. If your engine has not been rebored and is running standard-sized pistons, this kit is the correct match. Always compare the part number on your old piston (e.g., 3926631 or 3802561) to ensure compatibility.

Q: What is included in this piston kit, and what else will I need for a full overhaul?

A: This kit includes the piston, piston rings, and piston pin. For a complete engine overhaul, you will typically also need a cylinder liner kit, main bearings, connecting rod bearings, a complete gasket set, and a new oil pump. We recommend replacing all wear components simultaneously to ensure the longevity of your rebuilt engine.

Q: Can I install this piston kit without specialized tools?

A: While a skilled mechanic can perform this work, installing pistons and rings requires precision. We strongly recommend using a piston ring compressor to fit the rings into the cylinder bore without damage. A torque wrench is essential for tightening connecting rod bolts to the manufacturer’s specified torque values. If you are not experienced with diesel engine rebuilding, professional installation is advised.