This comprehensive Mercedes-Benz W123 Service Repair Manual provides detailed information for all years and models of this iconic car. It is your ultimate resource for everything from routine maintenance to complex repairs, enabling you to confidently maintain and restore your W123 to its former glory.

The manual delves into every aspect of the vehicle, including engine overhaul and rebuilding, brake systems, sunroof operation, timing belt replacement, troubleshooting, diagnostics, computer diagnostics, engine performance, front end and alignment procedures, suspension components, transmission removal and installation, air conditioning service, transmission servicing, computer diagnostic codes, firing orders, detailed specifications for every model, factory maintenance schedules, serpentine belt routing, timing belt service procedures, brake servicing procedures, driving concerns, complete torque specifications, U-joint and CV-joint service procedures, repair procedures, complete wiring diagrams, and hundreds of illustrations. This extensive manual also includes vacuum diagrams, making it a truly comprehensive resource for W123 owners and mechanics alike.

No matter your experience level, this manual empowers you to tackle any repair or restoration project with confidence. Its step-by-step instructions, detailed diagrams, and clear explanations guide you through every process, allowing you to save money and gain a deeper understanding of your W123.

The Mercedes-Benz W123 is a mid-size executive car produced by Mercedes-Benz from 1976 to 1985. It was the successor to the W114/W115 "Stroke Eight" model and was offered in a wide range of body styles, including sedan, station wagon, coupe, and convertible. The W123 was known for its robust build quality, strong engines, and comfortable interior. Its design was considerably more modern than its predecessor, featuring a cleaner, more angular aesthetic with sharp lines and a distinctive grille. It was the first Mercedes-Benz car to feature an independent rear suspension, which improved handling and ride comfort. Additionally, the W123 was one of the first cars to incorporate safety features like crumple zones and a robust passenger safety cell.

The W123 was a resounding success for Mercedes-Benz, selling over 2.7 million units worldwide. It was renowned for its reliability and durability, becoming a popular choice for taxi drivers and businesses due to its robust construction and low maintenance requirements. The W123 was offered with a wide selection of petrol and diesel engines, including the famous 2.4-liter OM616 diesel engine lauded for its fuel efficiency and longevity. It also featured several drivetrain options, including manual and automatic transmissions, as well as rear-wheel drive. The W123's combination of practicality, performance, and comfort made it a highly sought-after car in its time and continues to be a popular classic car today.