BMW 198ci Specs: 87 x 91 mm

BMW 198ci specs: 87 x 91 mm (3.4252 x 3.5827 in) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.

At a glance

Displacement	198 ci
Cylinders	6
Bore	3.425"
Stroke	3.583"
Compression	11.5:1
Advertised power	315–333 hp
Years	2001–2008

This engine

Engine	Displacement	Bore × Stroke	CR	HP
S54B32	198 ci	3.4252" × 3.5827"	11.5:1	315–333

Factory cars with a BMW 198ci

• BMW 3 Series / M3: 2001, 333 hp; 2002, 333 hp; 2003, 333 hp; 2004, 333 hp; 2005, 333 hp; 2006, 333 hp
• BMW Z3: 2001, 315 hp; 2002, 315 hp
• BMW Z4: 2006, 330 hp; 2007, 330 hp; 2008, 330 hp

What varies across the family

This family is represented by a single engine in the database: 198 ci, 6 cylinders, a 3.4252" × 3.5827" bore and stroke.

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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