The Volvo Penta KAD diesel Aquamatic family was pinnacle of diesel sterndrives while it was produced. The KAD series combines a mechanical compressor, turbo, charge-air cooling, and advanced electronics to create a true performance package. The KAD300, the last and most advanced of the series, boasts 4 valves per cylinder and deliverd performance in every aspect of the word. From low-speed maneuvering to unequalled acceleration and excellent top speed, the KAD300 was a true powerhouse. The specially developed Duoprop drive transforms the massive torque created by the engine to deliver unparalleled acceleration. At higher speeds, the turbo produces high power for excellent top speed and cruising comfort. The KAD series is known for its traditional diesel reliability, long service life, and overall economy. The compact design and low power-to-weight ratio make it equally suitable for single or twin installations. The KAD series was the world's best-selling diesel engine with sterndrive, and for good reason. With low exhaust and noise emissions, the dynamic comfort characteristics are outstanding, making it absolutely top class.