BMW M73

BMW M73 engine
Overview
Manufacturer	BMW
Production	1993–2002
Combustion chamber
Configuration	60° V12
Chronology
Predecessor	BMW M70
Successor	BMW N73

The BMW M73 is a 60° V12 SOHC piston engine which replaced the M70 and was produced from 1993-2002.

Compared with its M70 predecessor, the M73 features increased displacement thanks to increased bore (85mm up from 84mm) and stroke (79mm up from 75mm), and an updated roller-rocker valve-train. While most other engines in the BMW range had switched to DOHC and 4 valves per cylinder, the M73 used SOHC and 2 valves per cylinder.

Some versions of the engine have two separate Bosch Motronic ECUs, while others use a single Siemens ECU.

Applications:

The M73tu won the "Above 4 L" category of the International Engine of the Year awards for 1999.

Applications:

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