Bosch 8180 Spark Plug

Bosch OE Fine Wire Double Platinum Spark Plug 8180

Bosch 8180 is an OE Fine Wire Double Platinum spark plug built for steady ignition performance and extended service life. It uses platinum on the center electrode and a platinum inlay on the ground electrode to help reduce gap erosion while maintaining OE-style specifications.

For drivers servicing a Volkswagen Golf, Volkswagen Jetta, or Audi A3 Sportback e-tron, this Bosch double platinum plug supports consistent combustion in 4-cycle engines that call for a flat-seat, projected-tip design.

Key Features

• Double platinum construction with platinum firing pin and platinum ground inlay
• OE Fine Wire Double Platinum line for OE-style ignition performance
• Resistor spark plug with 1000 resistance
• Projected ceramic insulator for stable flame exposure
• Flat seat, standard ground configuration, and standard ground electrode tip design
• 12 mm thread diameter, 19 mm reach, and 16 mm hex size
• Pre-gapped to .7 for direct replacement use
• Part number 8180, previously cataloged as 8166

Product Details

Bosch’s OE Fine Wire Double Platinum line focuses on OE-style fit and long-term durability. The platinum center electrode and platinum ground electrode inlay help slow wear at the gap, which supports stable spark delivery over time. Bosch 8180 is a 4-cycle spark plug with a ceramic insulator, nickel-ytttrium and copper center electrode core material, and copper-based ground electrode core material for dependable secondary ignition performance.

Fitment includes 2019-2021 Volkswagen Golf, 2019-2021 Volkswagen Jetta, 2019 Volkswagen Golf SportWagen, 2016-2018 Audi A3 Sportback e-tron, and 2013-2018 Volkswagen Jetta. This Bosch 8180 spark plug is a direct OE-style service part for these applications.

Common Issues This Part Can Address

• Misfires caused by worn spark plug electrodes
• Hard starting from weak or inconsistent spark output
• Rough idle linked to plug wear or gap erosion
• Reduced fuel efficiency from incomplete combustion
• Loss of ignition stability under normal driving conditions

Installation Notes and Tips

Verify the engine calls for a 12 mm, flat-seat spark plug with a 19 mm reach before installation. Check the gap specification against the vehicle service information, even though the plug is pre-gapped to .7. Use proper spark plug removal and installation procedures to avoid thread damage in the cylinder head.

Fits 2019-2021 Volkswagen Golf, N/A; Fits 2019-2021 Volkswagen Jetta, N/A; Fits 2019 Volkswagen Golf SportWagen, N/A; Fits 2016-2018 Audi A3 Sportback e-tron, N/A; Fits 2013-2018 Volkswagen Jetta, N/A.

Quality Assurance

Bosch manufactures this spark plug to meet Original Equipment specifications for double platinum applications. The OE Fine Wire Double Platinum design is built around durability, gap control, and consistent ignition performance for the listed Volkswagen and Audi applications.