Product Overview

This K3H Full Gasket Kit is a premium, comprehensive sealing solution engineered for Mitsubishi’s robust 4M series diesel engines. Designed for professional rebuilds and overhauls, this kit ensures a complete, leak-free seal for critical engine components. We supply this high-quality aftermarket part globally, with extensive experience serving major markets across North America, Europe, the Asia-Pacific region, and the Middle East, supporting construction, mining, and industrial equipment maintenance worldwide.

Key Features & Benefits

• Complete Engine Seal: Contains all necessary gaskets and seals for a top-to-bottom engine rebuild, eliminating the need for multiple part purchases.
• Premium Material Construction: Manufactured from high-grade materials including multi-layer steel (MLS) for head gaskets and nitrile rubber for seals, ensuring superior heat resistance, oil compatibility, and long-term durability.
• Precision Fitment: Engineered to exact OEM specifications for a perfect fit, guaranteeing optimal compression and preventing fluid or compression leaks.
• Enhanced Engine Performance & Reliability: Restores factory sealing integrity, maintaining correct compression ratios and preventing power loss, overheating, and contamination of engine fluids.
• Cost-Effective Maintenance Solution: A single, comprehensive kit streamlines the procurement process and reduces downtime, offering significant value for fleet managers and rebuild shops.

Technical Specifications

OEM Cross-Reference

This K3H Full Gasket Kit is a direct replacement for the following OEM and aftermarket part numbers:

• Mitsubishi OEM Reference: MDx##### (Series) – Please confirm exact OEM number based on specific engine serial number.
• Common Aftermarket Numbers: FG-340, KS-1003 (Equivalent kits from major brands).

Note: Always verify compatibility using your engine model and serial number before ordering.

Compatibility

This kit is designed for Mitsubishi’s 4M40, 4M50, and 4M51 series diesel engines. These engines are widely used in a range of heavy machinery, including:

• Excavators: Mitsubishi, Caterpillar (older models with Mitsubishi engines), Kobelco, Hitachi.
• Generators & Industrial Power Units: Various stationary and mobile generator sets.
• Heavy-Duty Trucks & Buses: Select models in Asian and European markets.

These engines were commonly manufactured from the late 1980s through the 2000s. Specific application depends on the machine model and engine configuration.

Global Supply & Distribution

We are a leading B2B supplier specializing in diesel engine components for the global heavy equipment market. Our logistics network ensures reliable delivery to key industrial hubs worldwide.

• Worldwide Shipping: We export via air and sea freight to all major continents.
• Major Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East (UAE, Saudi Arabia), and South Africa.
• Fast Delivery: Consolidated shipments to major ports like Los Angeles, Rotterdam, Singapore, Dubai, and Sydney, with reliable in-country forwarding options.
• Export Compliance: All shipments are prepared with professional commercial invoices, packing lists, and comply with international trade regulations for smooth customs clearance.

Quality Assurance

We partner with ISO-certified manufacturers to deliver parts that meet rigorous performance standards.

• Manufacturing Standards: Components are produced to meet or exceed OEM specifications for dimensional accuracy and material performance.
• Warranty: Backed by a standard 12-month warranty against manufacturing defects from date of purchase.
• Testing: Gaskets undergo material integrity tests (heat, pressure, fluid resistance) to ensure they perform under extreme engine operating conditions.

FAQ

Q1: Is this a complete gasket set for a full engine overhaul?
A1: Yes, the K3H is a full gasket kit. It is designed to provide all the necessary gaskets and seals required for a complete engine rebuild, including the cylinder head, oil pan, valve cover, and manifold gaskets, as well as critical front and rear main seals.

Q2: How do I confirm this kit fits my specific Mitsubishi 4M engine?
A2: The K3H kit is compatible with the 4M40, 4M50, and 4M51 engine families. For absolute certainty, please provide your engine’s model designation and, if possible, the serial number. Cross-reference with your machine’s service manual or consult with our technical team for verification.

Q3: What is the difference between a “Full” gasket kit and a “Top End” kit?
A3: A Full Gasket Kit (like this K3H) includes seals for both the upper and lower engine assembly (head, block, oil system). A “Top End” kit typically only includes components for the cylinder head and valve train. For a complete rebuild involving the crankshaft and main bearings, the full kit is essential.

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 .