M178 may refer to
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M-178 (Michigan highway)
M-28 is an east–west state trunkline highway that traverses nearly all of the Upper Peninsula of the U.S. state of Michigan, from Wakefield to near Sault Ste. Marie in Bruce Township. Along with US Highway 2 (US 2), M-28 forms a pair ...
, a former state highway
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Mercedes-Benz M178 engine
The M176/M177/M178 is a V8 petrol engine range designed by Mercedes-AMG, replacing Mercedes-Benz M278 engine and Mercedes-Benz M157 engine, and is based on the Mercedes-Benz M133 engine.
The engine has two BorgWarner turbochargers positioned be ...
, an automobile engine
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M178 gun mount, a mount used on the M109 howitzer
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