Mercedes-Benz SLK-Class 2008 Owners Manual - Manual (Page 440)

439
Technical data
Identification labels
4 VIN 5 Engine number (engraved on engine)
6 VIN (lower edge of windshield)
7 Emission control information label,
includes both federal and California
certification exhaust emission
standards
i
When ordering parts, please specify vehicle
identification and engine numbers.