The E46 introduces a new 5 speed automatic transmission manufactured by General Motors Powertrain division of Strasbourg, France. The transmission will be available as an option in both the 323i and 328i models from start of production. The A5S 360R will also be available in the 1999 528i (9/98 production). The A5S 360R transmission offers the following features and benefits: The A5S 360R’s has a maximum torque rating of 360Nm. Designed and manufactured to provide maintenance free lifetime operation, Gradual torque converter lock up providing a controlled degree of clutch slippage and smooth transition to full lock. Transmission diagnostics improved due to the new E46 diagnostic concept. Components : Made of aluminum alloy, the cases are light weight. The single piece oil pan is made of single wall sheet metal. It includes a drain plug on the bottom surface at the rear.
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http://www.bmwtech.ru/pdf/e46/ST034/12%20Automatic%20Transmission%20Internet.pdf