Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Mercedes Benz ML320FACTORY OEM SERVICE PROCEDURE
Spark Plug Specifications
SPARK PLUG TYPES
| Application | Beru | Bosch | NGK |
|---|---|---|---|
| C230, C32 & SLK32 | N/A | N/A | IFR 6 D 10 |
| C240 & C320 | 14 FGH 8 DPUR X 2 | F 8 DPER | IFR 5 D 10 |
| CL500, CLK320, E320, E430, S430, S500 & SLK320 | 14 FGH 8 DPUR X 2 | F 8 DPER | PFR 5-11 |
| CL55, CLK55, E55, S55 & ML55 | N/A | N/A | PFR 5-11 |
| CL600 & S600 | 14 F 7-DPUR X 2 | N/A | N/A |
| CLK430, G500, ML320, ML500 & SL500 | 14 FGH 8 DPUR X 2 | F 8 DPER | N/A |
| SL600 | 14 FGH 8 DPUR X 2 | N/A | N/A |
| SLK230 | N/A | F 7 KTCR | N/A |
SPARK PLUG SPECIFICATIONS
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) | |
|---|---|---|---|
| 4-Cyl., V6 & V8 | .039 (1.0) | 15-22 (20-30) | |
| V12 | |||
| CL600 & S600 | .041 (1.05) | 15-22 (20-30) | |
| SL600 | .039 (1.0) | 15-22 (20-30) | |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.