Z402 Piston Ring Set for Kubota Engine Parts – Diesel Engine Piston Rings

Product Details

Product Overview

This Z402 Piston Ring Set is a precision-engineered replacement component specifically designed for Kubota diesel engines. Manufactured by, this piston ring set is built to meet OEM size specifications, ensuring a reliable fit and optimal performance for a wide range of industrial, agricultural, and construction machinery. The rings are crafted to restore compression, reduce oil consumption, and minimize blow-by in your Kubota Z402 engine, making them an essential part of any engine overhaul or rebuild project.

Commonly used in applications including construction equipment, agricultural tractors, generators, marine engines, and material handling machinery, this piston ring set provides the durability and sealing required for demanding work environments. While designed for the Kubota Z402 model, we recommend verifying your engine’s specific requirements before installation.

Key Features & Benefits

• OEM Size Precision: Manufactured to original equipment manufacturer (OEM) size standards for a direct and accurate fit, eliminating the need for modifications.
• Enhanced Engine Compression: Restores cylinder sealing to improve compression ratios, leading to better fuel efficiency and increased power output.
• Reduced Oil Consumption: High-quality ring design minimizes oil passing into the combustion chamber, lowering operational costs and extending engine life.
• Durable Construction: Built from wear-resistant materials to withstand high temperatures and pressures found in diesel combustion cycles.
• Broad Application Compatibility: Suitable for diverse sectors including construction, agriculture, power generation, marine, and industrial handling equipment.
• Comprehensive Support: Backed by a 6-month warranty and online technical support after service, providing peace of mind for your purchase.

Technical Specifications

OEM Cross-Reference

This Z402 Piston Ring Set is designed as a direct replacement for the following Kubota OEM part numbers and engine applications:

• Kubota OEM Number: 1G857-21010
• Kubota OEM Number: 1G857-21020
• Kubota Engine Model: Z402

Note: This list is based on common industry cross-references. Please verify your engine’s serial number and existing part numbers to ensure compatibility.

Compatibility

This piston ring set is commonly used for the following engine and equipment applications. Fitment is inferred based on the engine model and typical usage in the industry:

• Engine Models: Kubota Z402 (Diesel)
• Applications:
  • Construction Equipment (e.g., mini excavators, compact loaders)
  • Agricultural Machinery (e.g., tractors, tillers)
  • Industrial Engines (e.g., pumps, compressors)
  • Genset / Power Generation Units
  • Marine Propulsion Systems
  • Material Handling Equipment (e.g., forklifts)

Global Supply & Distribution

We offer worldwide shipping capabilities to meet the needs of international B2B buyers. Our logistics network supports fast and reliable delivery to major industrial centers and ports across:

• North America: Los Angeles, Houston, New York, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Singapore, Shanghai, Tokyo, Sydney
• Middle East & Africa: Dubai, Jeddah, Durban
• South America: Santos, Buenos Aires, Callao

With export experience and compliance with international trade standards, we ensure your parts are delivered efficiently, securely, and with proper documentation for customs clearance.

Quality Assurance

maintains strict quality control procedures throughout the manufacturing process. Each piston ring set undergoes rigorous testing to ensure it meets dimensional and material specifications. Key quality measures include:

• Manufacturing Standards: Produced in accordance with industry-accepted tolerances for diesel engine components.
• Testing: Machinery test reports and video outgoing inspections are provided upon request, verifying product integrity before shipment.
• Warranty: Each set comes with a 6-month warranty against manufacturing defects. After the warranty period, our online technical support team remains available to assist with any issues.

FAQ

Q1: How can I confirm this piston ring set fits my specific Kubota Z402 engine?

A: While this set is designed for the Kubota Z402 diesel engine model, we recommend verifying your engine’s serial number and the existing ring specifications (e.g., width, thickness, and groove count). Cross-reference the OEM numbers listed (1G857-21010 or 1G857-21020) with your current parts. If you are unsure, please contact our support team with your engine details for further verification.

Q2: What is the recommended installation procedure for these piston rings?

A: Installation should be performed by a qualified diesel mechanic. Key steps include: 1) Thoroughly cleaning the piston grooves and cylinder bore. 2) Checking ring end-gap in the cylinder bore before installation. 3) Using a proper ring expander tool to avoid twisting or breaking the rings. 4) Staggering the ring end gaps around the piston (typically 120 degrees apart) to minimize blow-by. Always consult the engine service manual for specific torque and clearance values.

Q3: What maintenance practices can extend the life of these piston rings?

A: To maximize service life, ensure regular oil and filter changes using the manufacturer-recommended viscosity grade. Keep the air intake system clean to prevent abrasive dust from entering the cylinders. Avoid prolonged idling and excessive engine lugging. Periodically monitor compression levels and oil consumption as early indicators of ring wear. Using quality fuel and maintaining proper engine operating temperature also significantly reduces ring and cylinder wear.