K4N Valve Guide 31A01-02600 for Mitsubishi Diesel Engine Parts

Product Details

Product Overview

The K4N Valve Guide 31A01-02600 is a precision engine component designed for Mitsubishi diesel engine applications. As a critical part of the cylinder head assembly, this valve guide ensures proper valve stem alignment and heat dissipation during operation. Manufactured to OEM specifications, this component is commonly used in construction machinery, industrial equipment, agricultural tractors, generator sets, marine engines, and material handling equipment powered by Mitsubishi K4N diesel engines.

This valve guide provides a direct replacement for the original part number 31A01-02600, offering the same dimensional accuracy and material composition as the factory component. The part is sourced from, a recognized supplier in the Guangdong manufacturing region of China, ensuring reliable quality for aftermarket and replacement needs. While designed for the K4N engine model, professional verification of compatibility with specific engine serial numbers is always recommended before installation.

Key Features & Benefits

• Precision OEM Dimensions: Manufactured to exact OEM size specifications, ensuring a proper fit within the cylinder head without modification
• Durable Construction: Made from high-grade cast iron or steel alloy, providing excellent wear resistance and thermal conductivity for extended service life
• Direct Replacement: Designed as a drop-in replacement for original Mitsubishi part 31A01-02600, simplifying maintenance and reducing downtime
• Versatile Application: Suitable for multiple industries including construction, agriculture, marine, and power generation where K4N engines are deployed
• Quality Tested: Each batch undergoes outgoing inspection and machinery test reporting to verify dimensional accuracy and material integrity
• Complete Kit Option: Ideal for use during cylinder head overhaul or valve train service to restore engine performance and compression

Technical Specifications

OEM Cross-Reference

This valve guide is designed as a direct replacement for the following original equipment part numbers:

• Mitsubishi OEM Part Number: 31A01-02600

This part corresponds to the standard valve guide used in Mitsubishi K4N series diesel engines. For alternative or superseded part numbers, please consult your engine’s parts manual or contact our technical support team with your engine serial number for verification.

Compatibility

This valve guide is commonly used for the following engine and equipment applications:

• Engine Model: Mitsubishi K4N (4-cylinder diesel engine)
• Primary Applications:
  • Construction machinery (excavators, loaders, compactors)
  • Industrial equipment (forklifts, compressors, pumps)
  • Agricultural machinery (tractors, harvesters)
  • Generator sets (power generation units)
  • Marine engines (small to medium vessels)
  • Material handling equipment (warehouse machinery)

Important Note: While this part is designed for the K4N engine family, fitment may vary depending on specific engine serial numbers, cylinder head casting variations, and equipment manufacturer specifications. Always verify compatibility with your existing valve guide dimensions before ordering.

Global Supply & Distribution

We offer worldwide shipping capabilities to meet the demands of international B2B buyers. Our distribution network covers major markets including:

• North America: Rapid delivery to ports and industrial hubs in the USA, Canada, and Mexico
• Europe: Efficient logistics to EU countries, UK, and Eastern European markets
• Asia-Pacific: Direct shipping to Japan, South Korea, Australia, Southeast Asia, and Middle East markets
• South America & Africa: Reliable shipping to major ports and industrial centers

We maintain stock in our Guangdong warehouse for quick dispatch and support various shipping methods including air freight, sea freight, and express courier services. Our team has extensive export experience and ensures proper customs documentation and international trade compliance for smooth delivery worldwide.

Quality Assurance

is committed to delivering reliable engine components that meet international quality standards. Each valve guide is manufactured under controlled production processes with the following quality measures:

• Material Certification: Components are made from verified materials matching OEM specifications for hardness, wear resistance, and thermal properties
• Dimensional Inspection: Each batch undergoes precision measurement to ensure inner diameter, outer diameter, and length conform to OEM tolerances
• Testing Reports: Machinery test reports are available upon request to document quality compliance
• Outgoing Inspection: Video inspection can be provided for order verification prior to shipment
• Warranty Coverage: All parts are backed by a 6-month warranty against manufacturing defects

FAQ

Q1: How do I verify if this 31A01-02600 valve guide fits my Mitsubishi K4N engine?

To ensure proper fitment, we recommend measuring your existing valve guide’s outer diameter, inner diameter, and overall length. Compare these dimensions with the OEM specifications for the K4N engine. Additionally, check your engine’s serial number against Mitsubishi parts documentation. If you are unsure, contact our technical support team with photos or measurements of your original part for cross-verification.

Q2: What is the recommended installation procedure for valve guides?

Installation should be performed by a qualified diesel mechanic. The process typically involves: (1) Heating the cylinder head to the manufacturer’s recommended temperature to expand the guide bore, (2) Pressing out the old valve guide using a suitable drift tool, (3) Pressing in the new valve guide to the correct height (protrusion above the spring seat), and (4) Reaming the guide inner diameter to final size if required. Always use proper lubrication during installation and verify valve stem clearance after assembly.

Q3: How often should valve guides be replaced during engine maintenance?

Valve guide replacement is typically recommended during major engine overhauls or when valve stem-to-guide clearance exceeds manufacturer specifications. Common indicators of worn guides include excessive oil consumption (blue smoke), valve stem seal failure, and decreased engine compression. For high-hour engines in construction or industrial applications, inspection during every cylinder head service is advisable. The 6-month warranty covers manufacturing defects, but service life depends on operating conditions, maintenance practices, and fuel quality.