S4E Engine Valve 34404-11100 / 34404-10100 for Mitsubishi Diesel Engines

Product Details

Product Overview

This high-quality engine valve, specifically the intake and exhaust valve set with part numbers 34404-11100 and 34404-10100, is designed for the Mitsubishi S4E diesel engine. As a critical component of the cylinder head assembly, this valve ensures proper sealing and efficient gas exchange within the combustion chamber.

Manufactured to OEM specifications, this valve is suitable for a wide range of industrial applications including construction machinery, agricultural equipment, generator sets, marine propulsion, and material handling vehicles. The part is commonly used in Mitsubishi heavy equipment and industrial engines where reliability and durability are paramount.

Each valve is precision-engineered to meet or exceed original equipment standards, providing a direct replacement solution for maintenance and overhaul operations on S4E series engines.

Key Features & Benefits

• OEM Specification Fitment: Manufactured to match the exact dimensions and material composition of the original Mitsubishi parts 34404-11100 and 34404-10100, ensuring seamless installation without modification.
• High-Temperature Resistance: Constructed from heat-resistant alloy steel capable of withstanding extreme combustion chamber temperatures up to 800°C, preventing warping or premature failure.
• Enhanced Durability: The valve face features a hardened surface treatment that resists wear from constant contact with the valve seat, extending service intervals between overhauls.
• Precision Grinding: Each valve undergoes strict dimensional inspection with stem diameter tolerance within ±0.02mm, ensuring proper guide clearance and oil control.
• Corrosion Protection: The stem is treated with anti-corrosion coating to resist pitting and oxidation, particularly important for engines operating in humid or marine environments.
• Comprehensive Application: Suitable for Mitsubishi S4E engines powering excavators, loaders, generators, pumps, and marine auxiliaries, making it a versatile stock item for equipment dealers.

Technical Specifications

OEM Cross-Reference

This engine valve replaces the following original Mitsubishi part numbers:

• 34404-11100 – Intake/Exhaust Valve (primary reference)
• 34404-10100 – Alternative/earlier reference number

These numbers correspond to genuine Mitsubishi Heavy Industries parts catalogs for the S4E engine series. Always verify your existing part number before ordering to ensure correct fitment.

Compatibility

This valve is commonly used for the following applications:

• Engine Models: Mitsubishi S4E, S4E2 (where applicable)
• Equipment Types: Construction machinery (excavators, bulldozers), agricultural tractors and harvesters, industrial generator sets, marine auxiliary engines, forklifts and material handling equipment

Note: While designed for the S4E platform, fitment may vary by specific engine variant and equipment manufacturer. Please cross-reference your engine serial number and existing part number for guaranteed compatibility.

Global Supply & Distribution

We offer worldwide shipping capabilities to major industrial markets including:

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

With export experience to over 40 countries, we ensure fast delivery to major ports and industrial centers worldwide. All shipments comply with international trade regulations and are properly documented for customs clearance. Bulk orders for fleet maintenance and dealer stocking programs are welcome with competitive freight rates.

Quality Assurance

Our engine valves are manufactured in ISO 9001-certified facilities in Guangdong, China, following strict quality control procedures. Each production batch undergoes:

• Dimensional Inspection: Stem diameter, overall length, head diameter, and seat angle verification using calibrated gauges
• Material Analysis: Spectrometric testing to confirm alloy composition meets OEM specifications
• Hardness Testing: Surface hardness checked on stem tip and valve face for consistent wear resistance
• Visual Inspection: 100% inspection for surface defects, cracks, or machining imperfections
• Functional Testing: Sample batch leak testing under simulated operating conditions

Every order includes a 6-month warranty against manufacturing defects. Outgoing inspection videos and machinery test reports are available upon request to verify product quality before shipment.

FAQ

Q: How do I confirm these valves fit my Mitsubishi S4E engine?
A: First, check your existing valve part number. If it matches 34404-11100 or 34404-10100, these are direct replacements. Alternatively, verify your engine model plate – look for “S4E” or “S4E2” stamped on the engine block near the injection pump. If you have a different part number, please contact us with your engine serial number and current valve details for cross-reference assistance.

Q: Are these intake valves, exhaust valves, or a complete set?
A: This listing covers both intake and exhaust valves for the Mitsubishi S4E engine. The part numbers 34404-11100 and 34404-10100 are commonly used for either position depending on the specific engine variant. We recommend ordering a full set to ensure uniform wear characteristics. Each valve is individually packaged to prevent damage during transport. For quantity requirements, please specify your needs (typically 8 valves for a 4-cylinder S4E).

Q: What maintenance should I perform when replacing engine valves?
A: When replacing valves on an S4E engine, we recommend: (1) Inspect and replace valve guides if clearance exceeds 0.15mm; (2) Resurface or replace valve seats to ensure proper sealing angle (typically 45°); (3) Check valve spring tension and replace if below specification; (4) Adjust valve clearance to manufacturer specifications after installation (cold clearance typically 0.25mm intake, 0.30mm exhaust for S4E); (5) Replace valve stem seals to prevent oil consumption. Always refer to the Mitsubishi S4E service manual for exact torque values and procedures.