Restore your diesel engine's power and efficiency with this genuine-quality cylinder head combustion chamber block designed specifically for MITSUBISHI 4D55 and 4D56 engines. This critical component (OEM MD-720189-S/MD720189) ensures proper combustion, maintains compression, and protects your engine from costly damage.

✔ Key Features & Benefits:

Precision Engineered Replacement:

• Exact OEM specification (MD-720189-S/MD720189) for perfect fitment

• Designed specifically for 4D55/4D56 diesel engines

• Maintains factory compression ratios and combustion efficiency

Superior Durability:

• Manufactured from high-grade alloy to withstand extreme pressures

• Heat-resistant design handles diesel combustion temperatures

• Precisely machined surfaces ensure optimal seal with cylinder head

Performance Restoration:

• Corrects compression loss from worn or damaged chambers

• Restores proper fuel combustion patterns

• Helps maintain engine power and fuel efficiency

• Reduces excessive smoke and emissions

✔ Common Failure Symptoms:

• Loss of engine power

• Excessive blue/white exhaust smoke

• Difficult cold starting

• Poor fuel economy

• Compression test failures

✔ Ideal Applications:

• 4D55/4D56 engine overhauls

• Cylinder head repairs

• Combustion chamber replacement

• Preventive maintenance during head gasket replacement

✔ Why This Combustion Chamber Block?
The OEM-spec MD-720189-S/MD720189:

• Restores factory-engineered combustion characteristics

• Prevents compression leaks

• Maintains proper swirl patterns for efficient burning

• Provides long-lasting durability

Compatible With:

• MITSUBISHI L200/Triton

• MITSUBISHI Pajero/Montero

• MITSUBISHI Delica

• Other vehicles equipped with 4D55/4D56 engines

Installation Note: For best results, should be installed by a qualified mechanic with proper cylinder head machining and torque procedures. Always inspect and replace all related gaskets and seals during installation.

This genuine-quality combustion chamber block is the reliable solution for restoring your 4D55/4D56 diesel engine's performance and longevity, whether you're repairing damage or performing preventive maintenance.

With over 30 years of expertise in automotive parts export, we specialize in manufacturing high-precision, high-performance components for global markets. Our products meet stringent quality standards and are trusted by clients worldwide.

• Equipped with advanced testing machinery for material analysis and heat treatment verification.
• Dedicated engineering and QC teams ensure every product meets your exact specifications and performance requirements.

• Custom solutions available based on your samples or technical drawings.
• Trial orders (small quantities accepted) to facilitate smooth collaboration and build long-term partnerships.