Mitsubishi 4D55 4D56 Cylinder Liner Set MD168963 MD050430 | Engine Repair Parts

Product Details

Product Overview

This high-quality cylinder liner set is specifically engineered for Mitsubishi 4D55 and 4D56 diesel engines, commonly found in popular models like the L300, Delica, Pajero, and Canter. As a critical component for engine overhaul and repair, these liners are manufactured to meet or exceed original equipment specifications. We offer global shipping with extensive experience serving major industrial markets in North America, Europe, Asia-Pacific, the Middle East, and Africa, ensuring fast and reliable delivery to ports and inland destinations worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured from high-grade cast iron with a precise hardness rating of HB220-280 for exceptional wear resistance.
• Superior Durability: Features a controlled plateau honed surface finish (Ra 0.4-0.8µm) for optimal oil retention and reduced piston ring friction.
• Reliable Performance: Strictly tested for pressure resistance and dimensional accuracy to ensure a perfect seal and consistent compression.
• Corrosion Resistant: Specially treated outer surface to prevent pitting and galvanic corrosion in the engine block.
• Cost-Effective Solution: Offers a premium aftermarket alternative to OEM parts without compromising on quality or fitment.

Technical Specifications

OEM Cross-Reference

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

• MD168963 (Standard OEM Number)
• MD050430 (Alternative OEM Number)
• Also compatible with: MD110170, MD301625 (superseded numbers)

Compatibility

These liners are designed for Mitsubishi 4D55 and 4D56 diesel engines, which power the following vehicle applications:

• Mitsubishi L300 / Delica (1980s – 1990s)
• Mitsubishi Pajero / Montero (2.5L Turbo Diesel models)
• Mitsubishi Canter (4D56 engine variants)
• Mitsubishi Starion / L200 (Diesel variants)
• Hyundai H100 / Porter (Models using Mitsubishi 4D56 derivative)

Note: Always verify your engine block casting number to confirm fitment before purchase.

Global Supply & Distribution

We maintain a robust supply chain to ensure fast delivery to our international clients. Our distribution network covers:

• North America: Stock available for rapid dispatch to the USA, Canada, and Mexico.
• Europe: Fast shipping to the UK, Germany, Netherlands, and Spain via air and sea freight.
• Asia-Pacific: Direct shipping to Japan, Australia, Thailand, and the Middle East.
• Africa & South America: Reliable delivery to major ports and industrial hubs.
• Shipping Options: Express (DHL/FedEx), Air Freight, and Sea Freight (FCL/LCL) available.

Quality Assurance

• Manufacturing Standards: Produced under ISO 9001:2015 certified facilities.
• Warranty: 12-month warranty against manufacturing defects (excluding installation errors or misuse).
• Testing: 100% dimensional inspection and pressure testing before packaging to ensure zero defects.
• Certifications: Material composition reports and hardness test certificates available upon request.

FAQ

Q: Are these liners a direct fit for my Mitsubishi 4D56 engine?
A: Yes, these liners (MD168963 / MD050430) are the standard OEM specification for the 4D56 engine block. They are a drop-in replacement. However, we strongly recommend checking the casting number on your engine block to confirm compatibility, especially for early 4D55 models which may have slight variations.

Q: Do I need to machine the block before installation?
A: Generally, no. These are standard size liners designed for a press-fit installation into a clean, undamaged block. If the bore in your engine block is worn or out of round, you may need to have it professionally honed to the correct interference fit specification (typically 0.025-0.075mm of interference). We always recommend professional installation.

Q: What is the recommended piston ring gap for these liners?
A: The recommended ring end gap for a standard rebuild is 0.25-0.45mm for the top compression ring and 0.20-0.40mm for the second ring. Always check the service manual for your specific engine model (4D55 vs 4D56) as turbocharged variants may require slightly larger gaps to prevent ring butting under high heat.