Kubota Z650 D1005 V1305 Diesel Engine Piston Ring Set 16271-21050 1J095-21052

Product Details

Product Overview

This high-quality piston ring set is designed for precision fitment in Kubota diesel engine models Z650, D1005, and V1305. Manufactured to OEM specifications, this set includes the exact part numbers 16271-21050 and 1J095-21052, ensuring reliable compression and oil control for demanding industrial, agricultural, and construction applications.

As a critical component of the engine’s power assembly, these piston rings are engineered to withstand high temperatures and pressures while maintaining optimal cylinder sealing. Whether you are rebuilding a generator engine or performing scheduled maintenance on heavy equipment, this replacement set delivers the durability and performance required for long service intervals.

Each ring is precision-ground and heat-treated to reduce friction, minimize blow-by, and extend engine life. Ideal for service technicians and equipment owners seeking cost-effective OEM-quality replacements without compromising on fit or function.

Key Features & Benefits

• OEM Cross-Reference Fit: Directly replaces Kubota part numbers 16271-21050 and 1J095-21052 for guaranteed compatibility with Z650, D1005, and V1305 engines.
• Premium Material Construction: Made from high-grade ductile iron with advanced surface treatments for superior wear resistance and reduced cylinder bore scoring.
• Optimized Ring Profile: Designed with proper tension and geometry to ensure consistent oil control and compression sealing across all operating conditions.
• Comprehensive Set: Includes all necessary compression rings and oil rings for a complete piston ring replacement on a single cylinder.
• Rigorous Quality Control: Each ring is inspected for dimensional accuracy, gap clearance, and surface finish to meet or exceed OEM standards.
• Versatile Application: Suitable for Kubota engines used in excavators, tractors, generators, marine equipment, and material handling machinery.

Technical Specifications

OEM Cross-Reference

This piston ring set is manufactured to replace the following original Kubota part numbers:

• Kubota 16271-21050 – Primary ring set number for Z650/D1005/V1305
• Kubota 1J095-21052 – Alternative OEM reference for same application

These numbers are direct cross-references and are commonly used in service parts catalogs for Kubota industrial diesel engines. Always verify your existing part number before ordering to ensure correct fitment.

Compatibility

This piston ring set is specifically designed for use in the following Kubota diesel engine models:

• Kubota Z650 – 3-cylinder industrial diesel engine
• Kubota D1005 – 3-cylinder compact diesel engine
• Kubota V1305 – 4-cylinder diesel engine

Commonly used for replacement in Kubota-powered equipment including mini excavators, compact tractors, skid steer loaders, generator sets, marine auxiliary engines, and industrial pumps. Fitment is based on original equipment specifications; always confirm engine serial number and ring groove dimensions prior to installation.

Global Supply & Distribution

We provide worldwide shipping from our distribution centers in Guangdong, China, with reliable logistics partners ensuring fast delivery to major ports and industrial hubs across North America, Europe, Southeast Asia, the Middle East, and Africa. Typical transit times range from 5–15 business days depending on destination.

Our export team has extensive experience handling B2B orders for workshops, parts distributors, and equipment dealers. We offer flexible shipping options including air freight, sea freight, and express courier services (DHL, FedEx, UPS). Bulk orders and consolidated shipments are available for volume buyers.

We maintain inventory for immediate dispatch and can accommodate custom packaging or labeling requirements for international clients. Trade compliance documentation, including commercial invoices and certificates of origin, is provided with every shipment.

Quality Assurance

Each piston ring set is manufactured under strict quality management systems in ISO-certified facilities. All products undergo dimensional inspection using precision gauges to verify ring gap, side clearance, and radial thickness within OEM tolerances.

We provide outgoing video inspection and machinery test reports upon request to give buyers full confidence in product quality. Every set is backed by a 6-month warranty against manufacturing defects in materials and workmanship.

Our quality process includes surface finish analysis, hardness testing, and visual inspection for burrs or coating defects. Only parts passing all checks are packaged for shipment.

FAQ

Q: How do I confirm this piston ring set fits my Kubota engine?
A: Verify your engine model number (Z650, D1005, or V1305) stamped on the engine block. Also check the existing piston ring part number – it should match 16271-21050 or 1J095-21052. For engines that have been rebored, standard size rings are only compatible with standard bore cylinders. If your cylinder has been oversized, please contact us for custom-size options.

Q: What is included in the piston ring set?
A: The set includes all rings required for one cylinder: typically two compression rings (top and second) and one oil control ring assembly. For a complete engine rebuild, you will need one set per cylinder (e.g., 3 sets for a Z650 3-cylinder engine). Rings are pre-gapped and ready for installation with proper ring expander tools.

Q: Can these rings be installed without removing the engine from the equipment?
A: In most cases, piston ring replacement requires removing the cylinder head, oil pan, and connecting rod to access the piston assembly. While it is possible to perform this work in-frame on some equipment, we recommend removing the engine for thorough cleaning and inspection of cylinder walls, piston grooves, and connecting rod bearings. Always follow the Kubota service manual for your specific engine model.