8 Piece Set of Bosch OEM Spark Plug # 0242135509 / YR7MPP33 / 7424 - Mercedes Benz #'s 0041591803
- Laser welded Platinum inlay ground electrode provides 3X longer service life compared to standard copper plugs.
- Fine wire Platinum firing pin for better ignitability and performance.
- Unique 360 continuous laser weld fuses corrosion resistant Platinum firing pin to base.
- Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize for installation.
- Bosch Double Platinum spark plugs are pre-gapped at the factory and do not require a gap adjustment prior to installation.