Bosch 7900 Spark Plug

Reliable Ignition with Bosch Nickel Spark Plug 7900

The Bosch Nickel 7900 spark plug is engineered for consistent ignition performance in a wide range of vehicles including Ford, Honda, Toyota, and Volkswagen models. Designed for 4-cycle engines, this spark plug ensures efficient combustion and smooth engine operation.

• Resistance: 6000 ohms for noise suppression
• Ground Electrode Tip Design: Tapered v-profile for precise spark delivery
• Center and Ground Electrode Material: Durable nickel-yttrium alloy
• Pre-Gap Size: 0.8 mm for optimal spark gap
• Thread Diameter: 14 mm with 19 mm reach for proper fit
• Flat seat type and standard ground configuration
• Hex size: 20.8 mm for easy installation
• Non-projected ceramic insulator for heat resistance
• Manufacturer Heat Range: 7, suitable for moderate engine temperatures

About the Bosch Nickel Spark Plug Line

The Bosch Nickel product line focuses on reliable secondary ignition components made with nickel-yttrium and copper materials. These spark plugs provide stable resistance and consistent spark performance, making them suitable for a variety of passenger cars and light trucks. The Nickel line balances durability and cost-effectiveness, ideal for vehicles requiring standard ignition parts.

Technical Details and Compatibility

The Bosch 7900 spark plug features a single ground electrode with a tapered v-profile tip, enhancing spark efficiency and combustion. Its 6000 ohm resistance helps reduce electromagnetic interference with vehicle electronics. The flat seat and 14 mm thread diameter ensure compatibility with many models such as the Honda Civic, Toyota Celica, Ford Ranger, Volkswagen Golf, and Subaru Legacy. The 19 mm reach and 0.8 mm pre-gap size are designed to meet OEM specifications for these vehicles.

Common Applications and Problem Solving

• Restores engine misfire issues in compatible 4-cycle engines
• Improves cold start performance and throttle response
• Reduces ignition noise interference with onboard electronics
• Maintains consistent spark gap for efficient fuel combustion
• Prevents fouling and electrode wear in moderate heat range engines

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.8 mm if adjustment is needed. Use a 20.8 mm socket wrench for proper torque application. Ensure the flat seat matches the cylinder head design to avoid compression leaks. Avoid over-tightening to prevent thread damage. This spark plug is designed for 4-cycle engines and is not recommended for outdoor power equipment.

Quality Assurance and Warranty

Bosch spark plugs undergo rigorous testing to meet OEM standards for durability and performance. The Nickel 7900 spark plug includes a resistor to minimize radio frequency interference. While specific warranty details vary by distributor, Bosch products typically come with a limited warranty covering manufacturing defects.