Bosch 79159 Spark Plug

Bosch Nickel Spark Plug for BMW Applications

Bosch 79159 is a conventional nickel-copper spark plug built for steady ignition performance and OE-style fitment. It uses a copper-core center electrode with a nickel tip, a projected ceramic insulator, and a resistor design to support consistent spark delivery in the listed BMW applications.

Key Features

• Conventional Bosch Nickel line spark plug for secondary ignition service
• Copper-core center electrode with nickel tip for durable spark delivery
• Multiple ground electrode design with three ground electrodes
• Resistor spark plug with 6000 ohms resistance
• Projected ceramic insulator and flat seat design
• 12 mm thread diameter, 14 mm hex size, 26.5 mm reach
• Pre-gapped at .7 for direct replacement use

Product Details

The Bosch Nickel line focuses on practical replacement value for drivers who want an OE-style spark plug without unnecessary complexity. Part number 79159 uses a heavy-duty nickel center electrode with a copper core to support longer service life than a basic copper-core design, while the nickel ground electrode tip and multiple-ground configuration help maintain stable ignition performance. This Bosch spark plug is engineered to meet or exceed original equipment specifications for nickel-copper core spark plugs.

Compatible With BMW Z4 2009-2016, BMW 335is 2011-2013, BMW 740i 2011-2012, BMW 740Li 2011-2012, BMW 1 Series M 2011, BMW 135i 2008-2010, BMW 335i 2007-2010, BMW 335i xDrive 2009-2010, BMW 535i 2008-2010, BMW 535i xDrive 2009-2010, BMW X6 2008-2010, BMW 335xi 2007-2008, and BMW 535xi 2008. Bosch 79159 is a direct-fit ignition service part for these BMW models when the listed plug specification matches the engine application.

This part cross-references common OE-style spark plug applications for BMW turbocharged and performance models, including Bosch 79159 and equivalent nickel-copper plug references used for the same application.

Common Issues This Part Can Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weak or inconsistent spark output
• Misfire codes related to ignition wear
• Reduced throttle response from degraded plug performance
• Service intervals reached on BMW ignition maintenance

Installation Notes and Tips

Verify the engine’s required spark plug specification before installation, including thread diameter, reach, seat type, and heat range. Bosch 79159 uses a 12 mm thread, flat seat, 26.5 mm reach, and heat range 6. Inspect ignition coils and plug wells during service, and follow the vehicle manufacturer’s torque specification for final installation.

Quality Assurance

Bosch designs the Nickel line to meet or exceed original equipment specifications for nickel-copper core spark plugs. Part number 79159 is built as a conventional replacement ignition component for BMW applications that call for this plug design.