Spark plugs
| Spark plugs | 
| 
      
       Engine
      
       | 
     
      
       Designation
      
       | 
    
| 
      
       B204I
      
       | 
     
      
       NGK BCP 5EV (Precious metal)
      
       | 
    
| 
      
       B204L
      
       | 
     
      
       NGK BCPR 7ES
      
       | 
    
| 
      
       B234I
      
       | 
     
      
       NGK BCP 6EV (Precious metal)
      
       | 
    
| Electrode gap | 
   
   Measure and adjust the spark plug at pos. 2 with tool 85 80 045. Measure the spark plug at pos. 1 with a wire gauge.
| 
       
        Engine
       
        | 
      
       
        Electrode gap, mm (in)
       
        | 
     
| 
       
        B204I/B234l
       
        | 
      
       
        0.6 ± 0.1 (0.023 ± 0.004)
       
        | 
     
| 
       
        B204L
       
        | 
      
       
        1.0 - 1.1 (0.039 - 0.043)
       
        | 
     
Tightening torque, spark plugs: 27 Nm (20 lbf ft).
Illustration: Tool 85 80 045 for measuring and adjusting electrode gap 0.6 mm
