This manual covers Mitsubishi vehicles equipped with the 4G63 engine family, a robust and versatile Inline 4-Cylinder engine. This engine, typically displacing 2.0 Liters (1997 cc), features DOHC 16-valve technology and is known for its adaptability, often found in performance-oriented applications where its tunability and driving characteristics are highly valued. Variants may include turbocharging, contributing to significant power output, and are paired with either manual or automatic transmissions. The engineering quality and reliability associated with this engine family have made it a cornerstone in various Mitsubishi models across different generations. This comprehensive Service Repair Workshop Manual in English provides full service and repair instructions. It details essential maintenance procedures, including recommended oil types and capacities, timing belt replacement intervals, coolant specifications, and spark plug types. Technical specifications for engine components, such as bore, stroke, and compression ratio, are included, alongside information on transmission options. This manual serves as an indispensable resource for owners, mechanics, and technicians, enabling them to perform accurate diagnostics, maintenance, and repairs, ensuring the longevity and optimal performance of their vehicles.