1G688-21110 Cylinder Piston Assembly STD 67mm Bore 56.5mm Height 20mm Pin For Kubota D722 D782 Z482

Product Details

Product Overview

This high-quality cylinder piston assembly, identified by OEM part number 1G688-21110, is a direct replacement component engineered for Kubota’s compact diesel engine series. Designed to restore compression and power output, this assembly is specifically configured for the Kubota D722, D782, and Z482 engine models commonly found in a wide range of industrial and agricultural machinery.

Manufactured to standard (STD) specifications, this assembly features a precise 67mm bore diameter and a 56.5mm compression height. It includes the piston, wrist pin, and a complete set of piston rings, providing all necessary components for a comprehensive top-end rebuild. While primarily designed for the models listed, please verify compatibility with your specific engine serial number to ensure a perfect fit.

Key Features & Benefits

• Precision Engineering: Machined to exact OEM tolerances (67mm STD bore, 56.5mm height, 20mm pin) for reliable fitment and consistent performance in Kubota D722, D782, and Z482 engines.
• Complete Kit: Includes the piston, 20mm wrist pin, and a full set of piston rings (1.5mm * 1.5mm * 3.0mm), simplifying your engine rebuild process and reducing procurement time.
• Durable Material Construction: Crafted from high-strength aluminum-silicon (Al-Si) alloy for the piston body, offering excellent wear resistance, thermal conductivity, and dimensional stability under high-load diesel operation.
• Enhanced Seal & Compression: The included ring set is designed to provide optimal oil control and gas sealing, helping to restore lost compression and reduce blow-by in high-hour engines.
• Direct OEM Replacement: Serves as a direct substitute for the Kubota genuine part 1G688-21110, ensuring compatibility without modification to the cylinder block or connecting rod.
• Rigorous Quality Control: Each assembly undergoes outgoing inspection and machinery test reporting to validate dimensional accuracy before shipment.

Technical Specifications

OEM Cross-Reference

This piston assembly is designed as a direct replacement for the following OEM part number:

• Kubota: 1G688-21110

Note: While the primary OEM number is 1G688-21110, it may also supersede or be cross-referenced with other Kubota internal numbers for the D722/D782/Z482 engine family. Always confirm physical dimensions against your original part.

Compatibility

This piston assembly is commonly used for the following Kubota diesel engines and their applications:

• Engine Models: Kubota D722, Kubota D782, Kubota Z482
• Vehicle/Equipment Applications: Compact tractors, mini excavators, portable generators, mini loaders (e.g., Bobcat), and zero-turn mowers.

Caution: Application fitment is inferred based on standard engine model usage. Please confirm your specific equipment model and engine serial number for absolute compatibility.

Global Supply & Distribution

We provide efficient worldwide shipping for this Kubota piston assembly, serving B2B buyers across key global markets. Our distribution network ensures fast delivery to major industrial centers and ports.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Japan, Australia, South Korea), and the Middle East (UAE, Saudi Arabia).
• Shipping Capabilities: We utilize express couriers (DHL, FedEx, UPS) for small orders and sea freight for bulk container shipments to major ports like Rotterdam, Los Angeles, and Shanghai.
• Export Experience: Based in Guangdong, China, we have extensive experience in international trade compliance, ensuring proper documentation and customs clearance for our global clients.

Quality Assurance

• Manufacturing Standards: Components are produced in ISO-certified facilities, adhering to strict quality management protocols for aftermarket parts.
• Warranty: Backed by a comprehensive warranty of 6 months (with options for 12-month coverage available upon request).
• Testing Procedures: Each batch undergoes outgoing inspection and machinery test reports to verify dimensional specifications and material integrity prior to shipment.

FAQ

Q: How do I verify if this 1G688-21110 piston assembly fits my engine?
A: First, confirm your engine model is a Kubota D722, D782, or Z482. Then, measure the original piston’s bore (should be 67mm STD), compression height (56.5mm), and wrist pin diameter (20mm). If these dimensions match and your engine block has not been overbored, this assembly is the correct standard-size replacement.

Q: Is this a complete piston kit, and what installation precautions should I take?
A: Yes, this includes the piston, wrist pin, and ring set. During installation, ensure the cylinder bore is clean and within tolerance. Always lubricate the piston, rings, and cylinder wall with clean engine oil. Use a proper ring compressor to avoid breaking the rings, and stagger the ring end gaps according to the engine service manual (typically 120 degrees apart).

Q: What is the difference between this “STD” piston and an oversize piston?
A: “STD” (Standard) refers to the original factory bore size of 67mm. This piston is intended for engines that have not been rebored. If your cylinder walls are worn, scored, or out-of-round beyond service limits, you may need an oversize piston (e.g., 0.25mm, 0.50mm, 0.75mm oversize) and your block must be machined to match. This STD assembly is for direct replacement in a block with original dimensions.