Bosch 7445 Spark Plug

Bosch 7445 Spark Plug Overview

Bosch 7445 is a conventional nickel-copper spark plug built for steady ignition performance and OE-style value. It uses a heavy-duty yttrium-enhanced nickel center electrode with a copper core to support longer service life in the applications listed below, including BMW M3, BMW M5, and BMW M6 coverage.

The Bosch Nickel line focuses on straightforward replacement spark plugs for drivers who want factory-style fit and dependable combustion performance. Bosch 7445 follows that approach with a standard design, flat seat, 12 mm thread diameter, and non-resistor construction.

Key Features

• Conventional nickel-copper spark plug for secondary ignition systems
• Yttrium-enhanced nickel center electrode with copper core
• Standard ground electrode design with J-gap configuration
• Flat seat and non-projected insulator design
• Removable nut terminal for common ignition wire setups
• Heat range 5 with 0.7 pre-gap size
• Compatible With 1988-1991 BMW M3, N/A
• Compatible With 1988 BMW M5, N/A
• Compatible With 1987-1988 BMW M6, N/A

Detailed Description

Bosch 7445 spark plug is engineered to meet or exceed original equipment specifications for nickel-copper core spark plugs. Its copper-core center electrode helps manage heat transfer, while the nickel electrode materials support consistent spark delivery in the specified BMW applications. This part number is a practical OE-style replacement for BMW M3, BMW M5, and BMW M6 models listed in the fitment data.

For buyers searching for a Bosch 7445 spark plug for BMW M3, BMW M5, or BMW M6, this plug provides the core dimensions and terminal style needed for direct replacement in the confirmed applications. The 17.5 hex size, 19 reach, ceramic insulator, and 12 mm thread diameter are important match points when verifying ignition service parts.

Common Issues This Part Can Address

• Worn spark plug electrodes that reduce ignition consistency
• Hard starting caused by degraded spark output
• Rough idle from aged secondary ignition components
• Misfire conditions tied to plug wear or incorrect heat range
• Loss of throttle response from inefficient combustion

Installation Notes and Tips

Verify thread diameter, reach, seat type, and terminal style before installation. Bosch 7445 uses a flat seat, 12 mm thread, removable nut terminal, and a pre-gap size of 0.7, so confirm those specifications against the vehicle’s service requirements before replacing the plug. Use proper spark plug handling practices and torque to the vehicle manufacturer’s specification.

For BMW M3, BMW M5, and BMW M6 service work, compare the existing plug’s dimensions and heat range to the listed Bosch 7445 specifications to ensure the correct match for the application.

Quality Assurance

Bosch designs the Nickel line as an OE-style replacement option for conventional nickel-copper spark plug applications. Bosch 7445 is built to align with original equipment specifications for the listed fitments and uses established spark plug construction materials for consistent service performance.