![]() ![]() TVDI - Turbo Valvetronic Direct Injection Not based on M50, single and double VANOS (names seem to follow the traditional M code logic above, regardless of year) S Code BMW Motorsport-designed Production Engines US-spec M57 Diesel US-specific SCR emissions system. M Code (1964-2006) Regular Production Engines We have intentionally left off engines not commonly available or known to the US market. This list includes the engine code, number of cylinders, engine size, the BMW models it's typically found in, and other important information. Engines may change from one type to another based on different factors, including model year and even geographical region. This list is some of the more common engine code designations that a US enthusiast may encounter. We concentrated on engines used in the US market, as well as BMW Motorsport production (S code) and racing (P code) engines. Below are charts detailing the BMW engine family codes with a handy de-coder image so you know how each code is broken down. BMW has gone through several variations on the engine designations from the 1960s to the 2000s they had the "M" engine family (not to be confused with BMW Motorsport) from the 2000s-2010s they had an N engine code from the mid 2010s they have a new modular B engine family. With revisions and updates over the years it's unlikely that parts will simply interchange so knowing the specific engine type can be very helpful when sourcing parts. For example, the inline-6 cylinder engines in the E34, E36, E39, E46, E53, Z3 and Z4 can all trace their origin to the M50 introduced in 1991. BMW engines evolve from one generation to the next but generally derive from one original design. But another code refers to the type of engine used in your BMW. The BMW E-chassis and F-chassis codes are obvious. You may come across many acronyms and short hand "codes" while shopping for parts for your BMW. ![]()
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