Z402 Valve Seat for Kubota Engine Parts – Diesel Engine Valve Seat

Product Details

Product Overview

This Z402 Valve Seat is a precision-engineered component designed for use in Kubota diesel engines, specifically the Z402 engine model. As a critical part of the cylinder head assembly, the valve seat ensures a proper seal between the valve and the engine block, directly impacting combustion efficiency and engine performance. Manufactured by, this valve seat is produced to OEM size specifications, guaranteeing a direct fit for maintenance or repair applications.

Commonly used in a wide range of industrial equipment, including construction machinery, agricultural tractors, generators, and marine engines, this valve seat is an essential replacement part for engine overhauls. While we do not claim universal fitment, the Z402 designation and OEM sizing indicate compatibility with Kubota Z402 series diesel engines. Always verify your engine’s specifications before ordering.

Key Features & Benefits

• OEM-Spec Dimensions: Manufactured to original equipment manufacturer (OEM) size standards, ensuring a precise fit without modification.
• Durable Material Construction: Made from high-strength alloys designed to withstand extreme heat and pressure in diesel combustion chambers.
• Enhanced Engine Efficiency: A properly seated valve ensures optimal compression, reducing blow-by and improving fuel economy.
• Long Service Life: Engineered for durability under continuous operation in construction, agricultural, and marine environments.
• Easy Installation: Designed as a direct replacement part, simplifying engine rebuilds and reducing downtime.
• Rigorous Quality Control: Each valve seat undergoes outgoing inspection to meet strict industry standards, supported by a 6-month warranty.

Technical Specifications

OEM Cross-Reference

The following OEM part numbers are cross-referenced for this Z402 Valve Seat. Please confirm with your original part number for compatibility.

• Kubota OEM Reference: 1G050-23110 (Typical for Z402 series engines)
• Alternative Part Numbers: 1G050-23120 (Intake/Exhaust variations may apply)
• Note: Always compare your original valve seat dimensions and engine model (Z402, Z482, etc.) for accurate replacement.

Compatibility

This valve seat is specifically designed for the Kubota Z402 diesel engine. It is commonly used for the following applications:

• Engine Models: Kubota Z402, Z482, Z602 (shared valve seat architecture in the Z series)
• Equipment Types: Compact tractors, mini excavators, generators, agricultural machinery, and marine auxiliary engines.
• Note: Fitment is based on engine model data. We recommend consulting your equipment’s service manual or contacting us with your engine serial number for 100% compatibility assurance.

Global Supply & Distribution

maintains a robust global supply chain, ensuring rapid delivery to major industrial centers worldwide. Our stock of Z402 valve seats is available for immediate shipping from our warehouse in Guangdong, China.

• Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Japan, South Korea, Australia), Middle East (UAE, Saudi Arabia), and South America (Brazil, Argentina).
• Shipping Options: Express (DHL, FedEx, UPS), Air Freight, and Sea Freight (FOB/CIF).
• Lead Times: 3-5 business days for express; 7-15 days for air freight; 20-30 days for sea freight.
• Export Compliance: All products comply with international trade regulations and are packaged securely for long-distance transport.

Quality Assurance

Every Z402 valve seat is produced under strict quality control protocols in ISO-certified facilities. We prioritize reliability for critical engine components.

• Manufacturing Standards: ISO 9001:2015 compliant production lines.
• Testing: Each valve seat undergoes dimensional inspection and material hardness testing before packaging.
• Warranty: 6-month warranty against manufacturing defects. After warranty service includes online technical support.
• Certification: Video outgoing inspection and machinery test reports are available upon request.

FAQ

Q1: How do I confirm this valve seat fits my Kubota Z402 engine?
A: Verify your engine model number (e.g., Z402, Z482, Z602) and compare the original valve seat’s outer diameter and thickness. Our part is built to OEM Z402 specs (typically 36mm OD for intake, 31mm OD for exhaust). If you are unsure, please send a photo or your engine serial number for verification.

Q2: What is the recommended installation procedure for this valve seat?
A: Installation should be performed by a qualified mechanic. The valve seat must be pressed into the cylinder head using a proper valve seat driver tool. Ensure the head is clean and free of debris. After installation, a leak test (using kerosene or compressed air) is recommended to confirm a perfect seal before reassembly.

Q3: How often should I replace the valve seats on my Kubota Z402 engine?
A: Valve seat replacement is typically needed during a major engine overhaul (every 3,000-5,000 hours of operation, depending on load and maintenance). Signs of wear include compression loss, rough idling, or visible pitting on the seat surface. Always replace valve seats in sets (intake and exhaust) for balanced performance.