Mercedes-Benz 158ci Specs: 89.9 x 68.2 mm

Mercedes-Benz 158ci specs: 89.9 x 68.2 mm (3.5394 x 2.6850 in) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.

At a glance

Displacement	158 ci
Cylinders	6
Bore	3.539"
Stroke	2.685"
Compression	10.5:1
Years	2001–2005

This engine

Engine	Displacement	Bore × Stroke	CR	HP
M112	158 ci	3.5394" × 2.685"	10.5:1	—

Factory cars with a Mercedes-Benz 158ci

• Mercedes-Benz C-Class: 2001, M112; 2002, M112; 2003, M112; 2004, M112; 2005, M112

What varies across the family

This family is represented by a single engine in the database: 158 ci, 6 cylinders, a 3.5394" × 2.685" bore and stroke.

All are oversquare — bore larger than stroke, which favours revs over low-end torque.

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

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