Bosch 8124 Spark Plug

Bosch OE Fine Wire Double Platinum Spark Plug

Bosch 8124 is an OE Fine Wire Double Platinum spark plug built for direct replacement service in select Porsche applications. It uses platinum on the center electrode and platinum inlay on the ground electrode to reduce gap erosion and maintain stable performance over time.

Compatible With Porsche 718 Boxster, Porsche 718 Cayman, and Porsche 911 applications listed below, this Bosch spark plug follows original-equipment specifications for double platinum service. The preset gap and resistor design support consistent ignition performance in modern 4-cycle engines.

Key Features

• OE Fine Wire Double Platinum construction
• Platinum center electrode tip for durability
• Platinum ground electrode inlay to reduce wear
• Preset .7 gap; do not gap before installation
• Resistor spark plug with 8,000 ohm resistance
• Flat seat, non-projected ceramic insulator design
• 12 mm thread diameter, 26.5 mm reach, 14 mm hex
• Bosch part number 8124

Product Details

Bosch OE Fine Wire Double Platinum spark plugs are engineered around OE-style materials and dimensions for long service life and consistent ignition performance. The nickel-ytrium center electrode core, platinum center tip, and platinum-and-metal ground electrode construction help control electrode wear in demanding street use. Bosch 8124 is a direct-fit spark plug for select Porsche 718 Boxster, 718 Cayman, and 911 models, including 2017-2025 applications listed in the fitment data. This part number is also referenced as Bosch 8124 for catalog and service lookup.

Common Issues This Part Helps Address

• Misfires caused by worn spark plug electrodes
• Hard starting from degraded ignition performance
• Rough idle related to spark plug wear
• Loss of throttle response from inconsistent spark delivery
• Reduced service life from gap erosion in platinum applications

Installation Notes

• Fits 2020-2025 Porsche 718 Boxster, N/A
• Fits 2023-2025 Porsche 718 Cayman, N/A
• Fits 2022-2025 Porsche 911, N/A
• Fits 2020-2022 Porsche 718 Cayman, N/A; Do Not Gap, Gap is Preset; OE Fine Wire Double Platinum
• Fits 2017-2021 Porsche 911, N/A; Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Double Platinum
• Fits 2017-2019 Porsche 718 Boxster, N/A; Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Double Platinum
• Fits 2017-2019 Porsche 718 Cayman, N/A; Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Double Platinum

Install with the preset gap as supplied and verify the vehicle application against the listed Porsche model, year, and notes before service. This Bosch 8124 spark plug is specified for 4-cycle ignition systems and uses a flat seat design.

Quality Assurance

Bosch OE Fine Wire Double Platinum spark plugs are built to meet original equipment specifications for double platinum applications. The design focuses on electrode durability, stable ignition performance, and OE-style fitment for the listed Porsche vehicles.