Bosch 96347 Spark Plug

Bosch EVO Spark Plug for Mercedes-Benz Performance

The Bosch EVO spark plug is built for modern gasoline engines that demand stable ignition under high cylinder pressure and elevated combustion temperatures. With iridium center electrode construction, a 1000 ohm resistor, and a projected ceramic insulator, Bosch EVO 96347 supports consistent spark delivery in turbocharged and direct-injection applications.

Compatible With Mercedes-Benz AMG GT, C300, GLC300, GLE350, S-Class, and Sprinter applications listed below, this Bosch EVO spark plug is engineered to meet the demands of late-model Mercedes-Benz and select INFINITI engines. Part number 96347 is developed to OE-level standards and uses an upgraded insulator design with dielectric strength above 45 kV.

Key Features

• Iridium center electrode tip for stable ignition performance
• 1000 ohm resistor helps control electrical noise
• Projected ceramic insulator for modern combustion chamber designs
• Flat seat and 12 mm thread diameter
• 0.7 mm pre-gap size for precise spark delivery
• Copper ground electrode core with standard single-ground configuration
• Designed for high-demand turbocharged and gasoline direct-injection engines

Product Details

Bosch EVO 96347 is a 4-cycle spark plug built for engines that face irregular combustion events and elevated ignition stress. The EVO line focuses on long service life and reliable ignition in modern powertrains, including Mercedes-Benz models such as CLA250, C300, GLC300, GLE350, GLS580, AMG GT, and S-Class variants. It also appears in select INFINITI Q50 and Q60 applications. If you are replacing worn plugs in a Mercedes-Benz C300, GLC43 AMG, or AMG GT 63, this part number 96347 matches the OE-style requirements for many listed vehicles.

This part cross-references Bosch EVO 96347 for the same application.

Common Problems This Part Helps Address

• Misfire under load
• Rough idle from worn spark plugs
• Hard starting in high-compression engines
• Ignition instability in turbocharged direct-injection setups
• Reduced throttle response from degraded spark performance

Installation Notes and Tips

Verify engine fitment by year, make, and model before installation. Check the specified gap against the engine requirement before threading the plug into the cylinder head. Use proper torque procedures for the 12 mm flat-seat design to avoid thread damage and ensure correct heat transfer. For Mercedes-Benz and INFINITI applications, replace plugs according to the service interval recommended for the engine.

Quality Assurance

Bosch develops and manufactures EVO spark plugs to OE-level quality standards. The EVO design uses an improved insulator and high dielectric strength to handle demanding combustion conditions found in modern Mercedes-Benz and other advanced gasoline engines.