Genuine BOSCH Suppressed Spark Plug
Part number YR7SII33U

Equipped with iridium firing pins at the center and ground electrode: Bosch Double-Iridium spark plugs are developed to the same high quality as original equipment and engineered for high performance in gasoline engines.

Features and Benefits:

  • Developed with the same high quality which we supply to original equipment: Outstanding spark plug technology which meets exactly the requirements of the respective engine
  • Fine wire 360° continuous laser welded iridium firing pins and a tapered iridium alloy ground electrode inlay: For excellent combustion and an improved service life
  • Large copper core center electrode: Enables an improved heat transfer
  • Nickel-plated housing and thread: For protection against corrosion and seizure in the aluminum cylinder head without the need for lubrication
  • Factory pre-set electrode gap: Enables hassle-free replacement for workshops
  • Manufactured using heat-shrink assembly: Greater resilience in extreme temperatures and ensures high gas-tightness
  • Ribbed insulator design: Prevents misfires due to flash-over

Electrode Gap [mm]

1,0

Tightening Torque [Nm]

23

Tightening angle [degrees]

90

Outer thread [mm]

12

Thread Pitch [mm]

1,25

Thread Length [mm]

26,5

Spanner Size

16

Spark Position [mm]

5

Number of Poles

1