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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
Specification
Detail
Part Name
Valve Guide
Engine Model
Mitsubishi 4DR5, 4DR7
Material
High-strength Cast Iron / Sintered Alloy
Inner Diameter
8.0 mm (Standard)
Outer Diameter
14.0 mm (Standard)
Length
63.5 mm (Standard)
OEM Number
ME051120, ME051121
Position
Intake & Exhaust
Quantity per Engine
8 pcs (4 per cylinder)
OEM Cross-Reference
Mitsubishi OEM: ME051120, ME051121
Alternative Numbers: 31A11-00100, 31A11-00101 (Compatible cross-references)
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.
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