Page 439 of 481

438 Technical dataEngineModel
SLK 280 (171.454)
1
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.
SLK 350 (171.456)
1
SLK 55 AMG (171.473)
1
Engine
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
3.47 in (88.00 mm)
3.66 in (92.90 mm)
3.82 in (97.00 mm)
Stroke
3.24 in (82.20 mm)
3.39 in (86.00 mm)
3.60 in (92.00 mm)
Total piston displacement
182.8 cu in (2 996 cm
3)
213.5 cu in (3 498 cm
3)
331.8 cu in (5 439 cm
3)
Compression ratio
11.3:1
10.7:1
11:1
Output according to
SAE J 1349
228 hp / 6 000 rpm
2
(170 kW / 6 000 rpm)
268 hp / 6 000 rpm
2
(200 kW / 6 000 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
355 hp / 5 750 rpm
2
(265 kW / 5 750 rpm)
Maximum torque according
to SAE J 1349
221 lb-ft / 2 700 - 5 000 rpm
(300 Nm / 2 700 - 5 000 rpm)
258 lb-ft / 2 400 - 5 000 rpm
(350 Nm / 2 400 - 5 000 rpm)
376 lb-ft / 4 000 rpm
(510 Nm / 4 000 rpm)
Maximum engine speed
6500 rpm
6 500 rpm
6700 rpm
Firing order
1-4-3-6-2-5
1-4-3-6-2-5
1-5-4-2-6-3-7-8
Poly-V-belt
2404 mm
2 404 mm
2380 mm
Page 441 of 481
440 Technical dataRims and tires
iThe following pages also list the ap-
proved wheel rim and tire sizes for
equipping your vehicles with winter
tires. Winter tires are not available as
standard or optional factory equip-
ment, but can be purchased from an
authorized Mercedes-Benz Center.
Depending on vehicle model and the
standard or optional factory-equipped
wheel rim/tire configuration on your
vehicle (Sport Package etc.), equipping
your vehicle with winter tires approved
for your vehicle model may also require
the purchase of two or four wheel rims
of the recommended size for use with
these winter tires. See an authorized
Mercedes-Benz Center for more infor-
mation.
Page 442 of 481
441 Technical data
Rims and tires
Same size tiresModel
SLK 280
SLK 280
SLK 350
Summer tires
1
1Radial-ply tires
-
-
Rims (light alloy)
-
-
Wheel offset
-
-
Winter tires
1,2
2Not available as factory equipment.
205/55 R16 91H M+S.
225/45 R17 91H M+S.
Rims (light alloy)
7Jx16H2
7.5 J x 17 H2
Wheel offset
1.34 in (34 mm)
1.42 in (36 mm)
Winter tires*
1,2,3
3Must be used in conjunction with Run Flat Indicator* only.
225/45 R17 91H M+S.MOExtended
Rims (light alloy)
7.5 J x 17 H2
Wheel offset
1.42 in (36 mm)
Page 443 of 481
442 Technical dataRims and tiresModel
SLK 280 (Sport Package*)
SLK 350 (Sport Package*)
SLK 55 AMG
SLK 55 AMG
SLK 55 AMG (Performance Package*)
Summer tires
1
1Radial-ply tires
-
-
Rims (light alloy)
-
-
Wheel offset
-
-
Winter tires
1,2,3
2Not available as factory equipment.3For use with snow chains contact an authorized Mercedes-Benz Center.
205/50 R17 89H M+S.
or
225/45 R17 91H M+S.
225/40 R18 92H XL (Extra Load) M+S.
Rims (light alloy)
7.5 J x 17 H2
7.5 J x 18 H2
Wheel offset
1.46 in (37 mm)
1.46 in (37 mm)
Page 446 of 481
445 Technical data
Rims and tires
Spare wheel with collapsible tire
All models
Rim (light alloy)
4.5 B x 17 H2
Wheel offset
0.47 in (12 mm)
Collapsible tire
145/70-17 92P
1
1Must not be used with snow chains.!Please compare the recommended tire
inflation pressure for your vehicle with
the tire inflation pressure on the yellow
label located on the spare wheel rim.
If the tire inflation pressure on the yel-
low label on the spare wheel rim differs
from the values given in this Operator’s
Manual, inflate the collapsible tire to
the recommended tire inflation pres-
sure given on the yellow label on the
spare wheel rim.
iPlease note that the tire inflation
pressure of the collapsible tire differs
from the tire inflation pressure of the
road tires.
Inflate the collapsible tire to approxi-
mately 51 psi (3.5 bar).iThe SLK 55 AMG with Performance
Package* does not have a spare wheel.
The SLK 55 AMG with Performance
Package* is equipped with TIREFIT
(page 408).
Page 447 of 481
446 Technical dataElectrical systemModel
SLK 280
SLK 350
SLK 55 AMG
Generator (alternator)
14 V/150 A
14 V/150 A
14 V/150 A
Starter motor
12 V/1.4 kW
12 V/1.7 kW
12 V/1.7 kW
Battery
12 V/62 Ah
12 V/74 Ah
12 V/74 Ah
Spark plugs
NGK PLKR 6A
Bosch Platin Y 7 MPP33
NGK PLKR 6A
NGK IFR6D10
Electrode gap
0.031 in (0.8 mm)
0.031 in (0.8 mm)
0.039 in (1.0 mm)
Tightening torque
15 – 22 lb-ft (20 – 30 Nm)
15 – 22 lb-ft (20 – 30 Nm)
18 – 22 lb-ft (25 – 30 Nm)
Page 448 of 481
447 Technical data
Main Dimensions
Main Dimensions
Model
SLK 280
SLK 350
SLK 55 AMG
Overall vehicle length
160.7 in (4 082 mm)
160.7 in (4 082 mm)
160.9 in (4 087 mm)
Overall vehicle width
70.4 in (1 788 mm)
70.4 in (1 788 mm)
70.6 in (1 794 mm)
Overall vehicle height
51.0 in (1 296 mm)
51.1 in (1 298 mm)
50.0 in (1 271 mm)
Wheelbase
95.7 in (2 430 mm)
95.7 in (2 430 mm)
95.7 in (2 430 mm)
Track, front
60.2 in (1530 mm)
60.1 in (1526 mm)
60.0 in (1 524 mm)
Track, rear
61.0 in (1549 mm)
61.0 in (1549 mm)
61.0 in (1 549 mm)
Page 449 of 481
448 Technical dataWeightsModel
SLK 280
SLK 350
SLK 55 AMG
Maximum roof load
110lb (50kg)
110lb (50kg)
Maximum trunk load
220 lb (100 kg)
220 lb (100 kg)
!This vehicle is not designed to carry
items on its roof. Roof rails and any
roof-mounted devices, unless express-
ly approved by Mercedes-Benz for use
on this vehicle model, must not be used
as they will damage the vehicle and
retractable hardtop.
At time of printing, Mercedes-Benz
does not offer any roof racks or any
other roof-mounted devices for use on
this vehicle.
!This vehicle is not designed to carry
any items on its trunk lid or accommo-
date any type of trunk lid rack or de-
vice. Using such devices may damage
the vehicle and retractable hardtop
mechanism.