Bosch FR7DII35V Spark Plug

Bosch OE Fine Wire Double Iridium Spark Plug

Bosch FR7DII35V is an OE Fine Wire Double Iridium Pin-to-Pin spark plug built for precise ignition performance and extended service life. It uses iridium-alloy electrodes and a preset gap for direct replacement service on select applications, including the 2011-2016 Honda CR-Z.

Key Features

• Double iridium pin-to-pin electrode design for efficient flame-kernel growth
• Iridium center electrode tip with a pin-to-pin ground electrode layout
• Preset 1.3 mm gap; do not gap before installation
• Resistor spark plug with 6000 resistance
• Flat seat, 14 mm thread diameter, 19 mm reach, 16 mm hex size
• OE Fine Wire Double Iridium Pin-to-Pin line for OE-style ignition service

Product Details

The Bosch OE Fine Wire Double Iridium Pin-to-Pin line focuses on stable ignition performance and long wear life. Bosch FR7DII35V uses two iridium-alloy electrodes: an iridium firing pin and an iridium-alloy pin laser-welded to the ground electrode. That electrode design supports efficient flame-kernel growth and helps maintain consistent spark quality over time. Bosch FR7DII35V is a direct-fit spark plug for the 2011-2016 Honda CR-Z, and the preset gap should remain unchanged during service.

This part cross-references select OE-style spark plug applications for the same vehicle platform.

Common Symptoms Addressed

• Rough idle caused by worn spark plug electrodes
• Hard starting from weak or inconsistent spark output
• Misfire conditions related to plug wear or gap drift
• Reduced throttle response from degraded ignition performance
• Service intervals shortened by standard copper plug wear

Installation Notes

Verify the application before installation on the Honda CR-Z. The gap is preset, so do not adjust it. Use the correct 16 mm spark plug socket, follow the manufacturer torque specification, and inspect the ignition coil boots and plug wells before reassembly. Bosch FR7DII35V is a 4-cycle spark plug with a flat seat and non-projected insulator design.

Quality Assurance

Bosch engineers this spark plug to OE-level specifications with iridium-alloy electrode construction for durability and consistent ignition performance. The ceramic insulator, nickel-yttrium and copper core materials, and resistor design support stable operation in modern ignition systems.