Bosch 7447 Spark Plug

Bosch 7447 Nickel Spark Plug Overview

Bosch 7447 is a conventional nickel-copper spark plug built for steady ignition performance and value. It uses a copper core center electrode with nickel electrode materials and a standard ground design to meet or exceed original equipment specifications for nickel-copper core spark plugs.

The Bosch Nickel line focuses on dependable OE-style ignition service for older European applications, including Audi 100, Audi 90, Audi Coupe Quattro, Volkswagen Golf, and Volkswagen Jetta models listed below.

Key Features

• Conventional nickel-copper spark plug design for OE-style replacement service
• Copper core center electrode for consistent heat transfer
• Nickel center and ground electrode tip materials
• Multiple ground electrode configuration with 3 ground electrodes
• Flat seat, 14 mm thread diameter, 19 mm reach, and 16 mm hex size
• Non-resistor design with removable nut terminal
• Pre-gapped to .8 for specified applications
• 4-cycle spark plug construction with ceramic insulator

Detailed Description

Bosch 7447 is engineered as a direct-style ignition service part for drivers maintaining factory-type spark plug specifications. The copper core helps manage heat while the nickel electrode materials support durable spark delivery in secondary ignition systems. This part number is a practical choice for Audi and Volkswagen applications that call for a conventional nickel-copper spark plug, including 1992-1993 Audi 100, 1992-1993 Audi 100 Quattro, 1993 Audi 90, 1990-1993 Audi 90 Quattro, 1990-1991 Audi Coupe Quattro, 1987-1989 Volkswagen Golf, and 1987-1989 Volkswagen Jetta. Bosch 7447 is built to match the fit and specification requirements of these vehicles without changing the original ignition setup.

What It Helps Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent spark delivery
• Misfire conditions related to aged ignition components
• Reduced throttle response from degraded spark plug performance
• Maintenance replacement for factory-style nickel-copper spark plug service

Installation Notes and Tips

Verify the vehicle’s required thread diameter, reach, seat type, and heat range before installation. Bosch 7447 uses a 14 mm thread, 19 mm reach, flat seat, and manufacturer heat range 6, so it should be matched to the engine specification exactly. Check the gap against the engine’s service requirements before installing, and inspect ignition wires, coil components, and plug wells for wear while servicing the plugs.

Quality Assurance

Bosch designs this Nickel spark plug line to meet or exceed original equipment specifications for nickel-copper core spark plugs. That OE-focused construction supports consistent fitment and service performance in the listed Audi and Volkswagen applications.