Product Details

Product Overview

This premium-quality Valve Seat set is specifically engineered for the Mitsubishi K4N diesel engine. As a critical component in the cylinder head assembly, these valve seats ensure a perfect seal for intake and exhaust valves, optimizing compression and engine efficiency. We are a leading global supplier of heavy-duty engine parts, serving major markets including North America, Europe, Southeast Asia, and the Middle East. All orders are processed for fast international shipping from our strategic warehouses.

Key Features & Benefits

• Premium Material Construction: Manufactured from high-grade alloy steel to withstand extreme combustion temperatures and pressures.
• Precision Machining: Engineered to exact OEM specifications for a perfect interference fit in the cylinder head, preventing valve seat recession.
• Enhanced Durability: Hardened surface provides exceptional wear resistance, extending the service life of the valve train and reducing maintenance intervals.
• Direct Replacement: Drop-in fit for Mitsubishi K4N engines. No modifications required.
• Reliable Performance: Ensures optimal gas sealing, leading to better fuel economy, reduced emissions, and maximum horsepower output.

Technical Specifications

OEM Cross-Reference

This product is a direct replacement for the following original Mitsubishi part numbers:

• 31A01-01301 (Intake Valve Seat)
• 31A01-01201 (Exhaust Valve Seat)

Please verify your existing part numbers to ensure compatibility.

Compatibility

This valve seat set is specifically designed for the Mitsubishi K4N diesel engine. This engine is commonly found in:

• Forklifts: Mitsubishi FD/FG series forklifts equipped with the K4N engine.
• Construction Equipment: Mini excavators, skid steer loaders, and generators powered by the Mitsubishi K4N.
• Industrial Engines: Pumps and compressors utilizing this specific powerplant.

Note: This part is for the cylinder head assembly. Professional installation by a qualified diesel mechanic is required.

Global Supply & Distribution

We offer efficient worldwide logistics to support your operations:

• Worldwide Shipping: Express (DHL, FedEx, UPS) and economical sea freight options available.
• Major Markets Served: USA, Canada, Germany, UK, Australia, UAE, Saudi Arabia, Singapore, and South Africa.
• Fast Delivery: Standard stock items ship within 24-48 hours from our fulfillment centers.
• Bulk Orders: Competitive pricing available for fleet maintenance and wholesale distributors.

Quality Assurance

• Manufacturing Standard: Produced under stringent ISO 9001:2015 quality management systems.
• Testing: 100% dimensional inspection and hardness testing performed before packaging.
• Warranty: 12-month warranty against manufacturing defects in materials and workmanship.
• Certification: Parts are tested to meet or exceed OEM performance standards.

FAQ

Q: Will these valve seats fit my Mitsubishi K4N engine without modification?

A: Yes, these parts are manufactured to the exact OEM dimensions (31A01-01301 / 31A01-01201) and are a direct drop-in replacement. However, installation requires precise machining of the valve seat counterbore in the cylinder head. We recommend having a professional machine shop install and cut these seats to ensure a perfect valve seal.

Q: What is the difference between the 31A01-01301 and 31A01-01201 parts?

A: The 31A01-01301 is the intake valve seat, which typically has a different angle and material requirement for drawing in the air-fuel mixture. The 31A01-01201 is the exhaust valve seat, designed to withstand the higher temperatures of escaping exhaust gases. This set includes the correct parts for both positions.

Q: What other parts should I replace when installing new valve seats?

A: When the cylinder head is off for valve seat replacement, it is standard practice to also replace the valve guides, valves, valve stem seals, and head gasket. This ensures a complete top-end rebuild and prevents future failures. We can supply a full K4N engine overhaul gasket kit and valve train components upon request.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .