Bosch 7407 Spark Plug

Reliable Spark Plug for Mercedes-Benz C230 and SLK230

The Bosch Nickel 7407 spark plug is engineered to deliver consistent ignition performance for select Mercedes-Benz models. Designed specifically for the C230 and SLK230, this spark plug ensures efficient combustion and reliable engine operation.

• Resistance: 6000 ohms for optimal electrical performance
• Multiple ground electrode tips and configuration for improved spark stability
• Nickel center electrode tip and core material for durability
• Pre-gap size of 1 mm for precise ignition timing
• Three ground electrodes to enhance spark exposure
• Flat seat type with 14 mm thread diameter and 19 mm reach
• Ceramic non-projected insulator for heat resistance
• Hex size 16 mm for standard installation tools
• Manufacturer heat range rating of 7 suitable for specific engine conditions
• Designed for 4-cycle engines, compatible with Mercedes-Benz C230 and SLK230

About the Bosch Nickel Spark Plug Line

The Bosch Nickel product line focuses on spark plugs featuring nickel alloy electrodes, providing a balance of durability and cost-effectiveness. The Nickel 7407 spark plug incorporates nickel and copper in the center electrode core, enhancing conductivity and wear resistance. This line is tailored for vehicles requiring reliable secondary ignition components without the need for precious metal electrodes.

Technical Details and Performance

The Bosch 7407 spark plug offers a resistance of 6000 ohms, which helps suppress electrical noise and ensures stable ignition. Its multiple ground electrode tips and configuration improve spark exposure, contributing to more complete combustion. The flat seat design and 19 mm reach ensure proper fitment and sealing in the combustion chamber. The ceramic insulator is non-projected, providing excellent heat insulation and durability under high-temperature conditions. With a heat range of 7, this spark plug is suited for the thermal requirements of the Mercedes-Benz C230 and SLK230 engines.

Applications and Problem Solving

• Compatible with Mercedes-Benz C230 and SLK230 models requiring secondary ignition spark plugs
• Addresses misfires caused by worn or faulty spark plugs
• Helps improve engine starting reliability and smooth idling
• Reduces ignition system electrical interference due to built-in resistor
• Supports consistent combustion for better fuel efficiency and emissions control

Installation Notes and Tips

When installing the Bosch Nickel 7407 spark plug, ensure the pre-gap size of 1 mm is maintained for optimal ignition performance. Use a 16 mm socket wrench to tighten the spark plug to the manufacturer’s torque specifications. The flat seat design requires proper seating to avoid compression leaks. It is recommended to replace all spark plugs simultaneously to maintain balanced engine operation in Mercedes-Benz C230 and SLK230 vehicles.

Quality Assurance and Warranty

Bosch spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Nickel 7407 spark plug includes a built-in resistor to reduce electromagnetic interference. While specific warranty details may vary, Bosch products typically come with manufacturer-backed quality assurance to support long-term use in compatible Mercedes-Benz models.