Mitsubishi 6D22 Engine Valve Guide ME051123 – Heavy-Duty Diesel Cylinder Head Component

Product Details

Product Overview

This high-precision Mitsubishi 6D22 Valve Guide (Part Number: ME051123) is a critical component for the cylinder head assembly of the renowned Mitsubishi 6D22 and 6D22T diesel engines. Manufactured to meet or exceed OEM specifications, this valve guide ensures precise valve stem alignment, optimal heat dissipation, and long-term durability in heavy-duty applications. We are a global supplier serving the construction, mining, and agricultural machinery sectors, with established distribution networks across North America, Europe, Southeast Asia, the Middle East, and Australia.

Key Features & Benefits

• Premium Material Composition: Made from high-grade, wear-resistant alloy cast iron, ensuring excellent thermal conductivity and resistance to scuffing.
• Precision Engineering: Machined to strict tolerances (typically within 0.01mm) for a perfect press-fit into the cylinder head and optimal clearance for the valve stem.
• Enhanced Durability: Designed to withstand the extreme temperatures and cyclic stresses of heavy-duty diesel operation, reducing the frequency of top-end overhauls.
• Direct OEM Replacement: Part number ME051123 is a direct cross-reference for the original Mitsubishi part, guaranteeing a perfect fit without modifications.
• Improved Engine Performance: Proper valve guide function is essential for maintaining compression, reducing oil consumption, and preventing valve seat distortion.

Technical Specifications

OEM Cross-Reference

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

• Mitsubishi OEM: ME051123
• Alternative / Interchange Numbers: ME051124 (may refer to oversized version), 31341-01000

Compatibility

This component is specifically designed for the Mitsubishi 6D22 series diesel engines and their turbocharged variants (6D22T). These engines are commonly found in:

• Excavators: Mitsubishi MS180, MS240, MS300 series
• Wheel Loaders: Mitsubishi WS200, WS250 series
• Forklifts: Heavy-capacity Mitsubishi FD/FG series (8-16 ton)
• Industrial & Marine: Various Gen-set and marine propulsion applications using the 6D22 platform.

Global Supply & Distribution

We are a dedicated exporter of heavy-duty engine parts with a robust logistics network. We can ship this 6D22 valve guide to virtually any destination worldwide.

• Shipping Capabilities: Express (DHL, FedEx, UPS), Air Freight, and Sea Freight (FCL/LCL).
• Major Markets Served: USA, Canada, UK, Germany, UAE, Saudi Arabia, South Africa, Australia, Indonesia, and Singapore.
• Fast Delivery: Stock items shipped within 24 hours. Bulk orders dispatched from our main warehouse within 3-5 business days.
• Trade Compliance: We provide all necessary documentation for customs clearance (Commercial Invoice, Packing List, Certificate of Origin upon request).

Quality Assurance

• Manufacturing Standard: ISO 9001:2015 certified production facility.
• Inspection: 100% dimensional inspection for inner and outer diameter, length, and concentricity before packaging.
• Warranty: 12-month warranty against manufacturing defects in material and workmanship.

FAQ

Q1: How can I confirm that this ME051123 valve guide fits my Mitsubishi 6D22 engine?
A: Please verify your engine model number (located on the engine data plate). This part is specifically for the 6D22 and 6D22T (turbo) engines. You can also measure your old valve guide; the standard outer diameter is 14mm and length is 62mm. For oversized guides (e.g., for re-bored cylinder heads), please contact our sales team for the correct part number.

Q2: Is it necessary to ream the valve guide after installation?
A: Yes, absolutely. While our guides are precision-machined, the final inner diameter must be reamed after press-fitting into the cylinder head. This corrects for any slight deformation caused by the interference fit and ensures the exact valve stem-to-guide clearance (typically 0.03mm – 0.07mm) required for 6D22 engines. Always use a proper valve guide reamer and follow the service manual.

Q3: Can I replace just the valve guides without removing the cylinder head?
A: No. The valve guides must be pressed out from the combustion side of the cylinder head and the new ones pressed in from the top. This requires the cylinder head to be removed from the engine and disassembled. We recommend replacing all valve guides, valve stem seals, and lapping the valve seats during a top-end overhaul for best results.