Kubota D850 D905 Bx2200 72mm STD Engine Piston Ring Set 15901-21050 15901-21052

Product Details

Product Overview

This premium quality 72mm STD Engine Piston Ring Set is specifically engineered for Kubota D850 and D905 diesel engines, as well as the Bx2200 tractor model. It serves as a direct replacement for OEM part numbers 15901-21050 and 15901-21052. Designed for B2B buyers worldwide, this piston ring set is a critical component for engine overhauls and rebuilds, ensuring optimal compression and oil control. We provide global shipping, serving major industrial markets in North America, Europe, Asia-Pacific, the Middle East, and South America with fast, reliable logistics.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications (72mm Standard Size) for a perfect fit and reliable performance in Kubota D850 and D905 engines.
• Durable Material: Constructed from high-grade cast iron and steel alloys, providing excellent wear resistance and long service life under heavy-duty conditions.
• Superior Oil Control: Designed with optimized ring geometry to minimize oil consumption, reduce friction, and maintain consistent cylinder pressure.
• Enhanced Compression: Ensures maximum combustion efficiency, leading to improved engine power output and fuel economy.
• Rigorous Quality Control: Each set undergoes strict dimensional and material testing to ensure 100% interchangeability with the original Kubota parts.

Technical Specifications

OEM Cross-Reference

This piston ring set is a direct replacement for the following original Kubota part numbers:

• 15901-21050
• 15901-21052

It is designed to meet or exceed the performance of the genuine Kubota components, ensuring a seamless fit during engine rebuilds.

Compatibility

• Engine Models: Kubota D850, Kubota D905
• Vehicle Applications: Kubota Bx2200 Tractor, and other small agricultural/industrial equipment utilizing these specific engine models.
• Year Range: Fits various model years; please verify your engine block casting number to confirm compatibility.

Global Supply & Distribution

We are a leading supplier of diesel engine components with a robust global supply chain. Our distribution network ensures fast and reliable delivery to:

• North America: Major ports like Los Angeles, Houston, and New York.
• Europe: Key hubs including Rotterdam, Hamburg, and Antwerp.
• Asia-Pacific: Singapore, Shanghai, and Tokyo.
• Middle East & Africa: Dubai, Jeddah, and Durban.
• South America: Santos, Buenos Aires, and Valparaiso.

We offer flexible shipping options (Air, Sea, Express) to meet urgent project timelines and provide full export documentation for hassle-free customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities, ensuring consistent quality control.
• Material Certification: All materials are sourced from trusted foundries and verified for hardness and tensile strength.
• Testing: Each batch undergoes dimensional verification (ring gap, side clearance, and radial thickness) and surface finish inspection.
• Warranty: We provide a 12-month warranty against manufacturing defects, offering you peace of mind for your rebuild project.

FAQ

Q1: How do I confirm these piston rings fit my Kubota D850 engine?
A: Please verify your engine’s cylinder bore diameter. This set is for a 72mm Standard (STD) bore. If your engine has been previously rebored, you may require an oversized ring set. Always check the part number on your old rings (15901-21050 or 15901-21052) for a direct match.

Q2: What is the correct installation procedure for these rings?
A: First, ensure the cylinder walls are clean and honed (if necessary). Install the oil ring first, followed by the second compression ring, and finally the top ring. Stagger the ring gaps 120 degrees apart around the piston. Lubricate the rings with engine oil before inserting the piston into the cylinder. Always follow the Kubota service manual for torque specifications.

Q3: Can these rings be used in a high-hour engine without a rebore?
A: It is recommended to check the cylinder bore for wear, taper, and out-of-roundness. If the bore is within manufacturer specifications (typically less than 0.05mm wear), standard rings can be used. However, for best performance and oil control, a light honing is advisable. If wear exceeds limits, an oversized piston and ring set will be required.