Product Details

Product Overview

This high-quality valve guide is specifically engineered for Mitsubishi 4DR5 and 4DR7 diesel engines. As a critical component in the cylinder head assembly, this valve guide ensures precise valve stem alignment, reducing wear and maintaining optimal compression. We are a leading global supplier of heavy-duty engine parts, serving the North American, European, Asia-Pacific, and Middle Eastern markets with reliable, export-ready logistics.

Key Features & Benefits

• Precision Fitment: Manufactured to strict OEM tolerances for seamless installation in Mitsubishi 4DR5 and 4DR7 cylinder heads.
• Superior Durability: Constructed from high-grade cast iron or sintered alloy, offering excellent resistance to heat and friction.
• Reduced Oil Consumption: Proper valve guide clearance prevents oil from entering the combustion chamber, improving engine efficiency.
• Enhanced Valve Life: Smooth inner surface minimizes valve stem wear, extending the service life of the entire valve train.
• Corrosion Resistance: Engineered to withstand harsh operating conditions and high exhaust temperatures.

Technical Specifications

OEM Cross-Reference

• Mitsubishi OEM: ME051120, ME051121
• Alternative Numbers: 31A11-00100, 31A11-00101 (Compatible cross-references)

Compatibility

• Engine Models: Mitsubishi 4DR5, 4DR7, 4DR50, 4DR51
• Vehicle Applications: Mitsubishi FK/FM Series trucks, Canter (early models), Forklifts, and Industrial machinery powered by 4DR engines.
• Year Range: 1980s–2000s (Consult your engine serial number for exact fitment).

Global Supply & Distribution

We offer worldwide shipping with fast delivery to major ports and industrial centers. Our logistics network covers North America, Europe (Rotterdam, Hamburg), Asia-Pacific (Singapore, Shanghai, Tokyo), the Middle East (Dubai, Jeddah), and Africa. We specialize in bulk export for B2B clients, ensuring customs compliance and reliable tracking for every order.

Quality Assurance

• Manufacturing Standard: ISO 9001 certified production line.
• Testing: 100% dimensional inspection for inner/outer diameter, hardness, and concentricity.
• Warranty: 12-month warranty against manufacturing defects under normal operating conditions.
• Certification: SGS or equivalent third-party inspection available upon request.

FAQ

Q: Will this valve guide fit my Mitsubishi 4DR7 engine?
A: Yes, this valve guide is designed for both 4DR5 and 4DR7 engines. Please verify your engine’s cylinder head specifications (inner diameter 14mm, outer diameter 14mm, length 63.5mm) to confirm compatibility. We recommend comparing the OEM number ME051120 or ME051121 against your original part.

Q: Do I need to ream the valve guide after installation?
A: Yes. For optimal performance, we strongly recommend using a valve guide reamer to achieve the correct stem-to-guide clearance (typically 0.03–0.08 mm for intake and 0.05–0.10 mm for exhaust). This ensures proper oil control and prevents valve sticking.

Q: What is the recommended maintenance interval for valve guides?
A: Valve guides should be inspected during every major cylinder head overhaul, typically every 8,000–10,000 operating hours for industrial engines. Replace if clearance exceeds 0.15 mm or if the guide shows scoring or excessive wear. Always replace valve stem seals simultaneously.

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 .