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Engine
343
Engine
Model
SLK 300 (171.454)
21
SLK 350 (171.458)
21
SLK 55 AMG (171.473)
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Engine type 272 272 113
Mode of operation 4-stroke engine, gasoline injection 4-stroke engine, gasoline injection 4-stroke engine, gasoline injection
No. of cylinders 6 6 8
Bore 3.46 in (88.00 mm) 3.66 in (92.90 mm) 3.82 in (97.00 mm)
Stroke 3.23 in (82.10 mm) 3.39 in (86.00 mm) 3.62 in (92.00 mm)
Total piston
displacement
182.8 cu in (2 996 cm
3
) 213.5 cu in (3 498 cm
3
) 331.9 cu in (5 439 cm
3
)
Compression ratio 11.3:1 11.7:1 11:1
Output acc. to
SAE J 1349
228 hp / 6 100 rpm
(170 kW / 6 100 rpm)
22
300 hp / 6 500 rpm
(224 kW / 6 500 rpm)
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355 hp / 5 750 rpm
(265 kW / 5 750 rpm)
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Maximum torque acc. to
SAE J 1349
221 lb-ft / 2 500 rpm - 5 000 rpm
(300 Nm / 2 500 rpm - 5 000 rpm)
266 lb-ft / 4 900 rpm
(360 Nm / 4 900 rpm)
376 lb-ft / 4 000 rpm
(510 Nm / 4 000 rpm)
Maximum engine speed 6 500 rpm 7 200 rpm 6 500 rpm
21
The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.
22
Premium fuel required. Performance may vary with fuel octane rating.
Technical data