Bosch 79173 Spark Plug

Reliable Spark Plug for Porsche 911, Boxster, and Cayman

The Bosch Nickel Spark Plug 79173 is engineered to deliver consistent ignition performance for Porsche 911, Boxster, and Cayman models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for effective electrical noise suppression
• Multiple ground electrode tips and configurations for improved spark distribution
• Nickel ground electrode core and tip material for durability
• Copper center electrode core with nickel tip for optimal conductivity
• Pre-gap size of 1.6 mm for precise spark gap
• Four ground electrodes to enhance ignition stability
• Flat seat type with 14 mm thread diameter and 19 mm reach
• Ceramic insulator with projected design for heat resistance
• Non-removable nut electrical terminal type
• Manufacturer heat range rating of 5 suitable for specific Porsche engines
• Hex size 16 mm for standard installation tools
• Resistor type spark plug to reduce electromagnetic interference

About the Bosch Nickel Spark Plug Line

The Bosch Nickel product line focuses on spark plugs featuring nickel alloy electrodes, which provide a balance of durability and cost-effectiveness. The Nickel line spark plugs, including part number 79173, are designed to meet the ignition requirements of various high-performance vehicles such as Porsche models, ensuring reliable spark delivery and consistent engine operation.

Technical Details and Performance

The Bosch 79173 spark plug incorporates a copper core center electrode with a nickel tip, enhancing electrical conductivity and heat dissipation. The multiple ground electrode design with nickel tips improves spark exposure and combustion efficiency. Its 5000 ohm resistance helps minimize radio frequency interference, protecting vehicle electronics. The ceramic insulator with a projected design supports high-temperature endurance, while the flat seat and 19 mm reach ensure proper fitment in Porsche 911, Boxster, and Cayman engines.

Common Applications and Problem Solving

• Restores consistent ignition in Porsche 911, Boxster, and Cayman engines
• Reduces misfires caused by electrode wear or improper gap
• Minimizes electrical interference affecting onboard electronics
• Improves fuel efficiency by ensuring optimal spark delivery
• Supports engine smoothness and performance under various driving conditions

Installation Notes and Tips

When installing the Bosch 79173 spark plug, ensure the spark plug gap is set to the specified 1.6 mm pre-gap size if adjustment is necessary. Use a 16 mm hex socket for proper torque application. The flat seat design requires careful seating to avoid damage to the cylinder head. Always follow manufacturer torque specifications and inspect the spark plug threads for cleanliness before installation.

Quality Assurance and Warranty

Bosch spark plugs, including part number 79173, are manufactured to meet strict quality standards for durability and performance. The resistor type design reduces electromagnetic interference, contributing to reliable vehicle operation. While specific warranty details are not provided here, Bosch products typically come with manufacturer-backed quality assurance to support long-term use in compatible Porsche models.