Bosch FR7NI33 Spark Plug

Bosch OE Fine Wire Iridium Spark Plug FR7NI33

Bosch FR7NI33 is an OE Fine Wire Double Iridium spark plug built for direct replacement use in select Volvo, Subaru, Saab, and Land Rover applications. It combines a fine-wire iridium center electrode with a laser-welded ground electrode to support consistent ignition performance and long service life.

The Bosch OE Fine Wire Iridium line focuses on OE-style fit and electrode construction for engines that require a preset gap and precise heat range control. For vehicles such as the Volvo S80, Volvo XC70, and Subaru Outback, FR7NI33 is specified as a do-not-gap plug with factory-set spacing.

• OE Fine Wire Double Iridium construction for stable spark delivery
• Laser-welded tapered ground electrode for improved ignitability
• Iridium-alloy center electrode firing pin for durability
• Preset .7 gap; do not gap before installation
• Resistor design with 6000 resistance specification
• Flat seat, 14 mm thread diameter, 26.5 mm reach, 16 mm hex
• Heat range 7 with ceramic insulator and non-projected design

Detailed Product Overview

Bosch FR7NI33 is engineered as a secondary ignition spark plug for 4-cycle engines that call for an OE-style iridium plug with a flat seat and preset gap. The fine-wire electrode design helps concentrate the spark for reliable ignition, while the iridium-platinum electrode materials are selected for wear resistance in demanding daily driving conditions. This part number is commonly searched for Volvo S40, Volvo V50, Volvo XC90, and Subaru Forester spark plug replacement applications.

Use Bosch FR7NI33 when servicing engines that specify the OE Fine Wire Iridium design and require the original gap to remain unchanged. This part number FR7NI33 is also a strong match for buyers looking for a Bosch iridium spark plug for select Volvo S80 and Subaru Outback applications.

Common Issues This Spark Plug Can Address

• Rough idle caused by worn or fouled spark plugs
• Hard starting from weak ignition output
• Misfire conditions related to electrode wear
• Reduced throttle response from inconsistent spark delivery
• Service intervals shortened by standard-plug wear in iridium-specified engines

Installation Notes and Tips

Verify vehicle application by year, make, model, and engine requirements before installation. FR7NI33 is a preset-gap spark plug, so do not adjust the gap. Confirm the flat seat, 14 mm thread diameter, 26.5 mm reach, and 16 mm hex match the original specification. This part is listed for select 2004-2014 Volvo, 2004-2009 Subaru, 2006-2007 Saab 9-2X, and 2008-2012 Land Rover LR2 applications; always follow the vehicle service information for torque and replacement procedure.

• Fits 2011-2014 Volvo S80, N/A; Do Not Gap, Gap is Preset
• Fits 2008-2013 Volvo C30, N/A; Do Not Gap, Gap is Preset
• Fits 2006-2013 Volvo C70, N/A; Do Not Gap, Gap is Preset
• Fits 2008-2012 Land Rover LR2, N/A; Do Not Gap, Gap is Preset
• Fits 2004-2011 Volvo S40, N/A; Do Not Gap, Gap is Preset
• Fits 2005-2011 Volvo V50, N/A; Do Not Gap, Gap is Preset
• Fits 2010 Volvo S80, N/A; Do Not Gap, Gap is Preset; To Chassis # 134000
• Fits 2007-2010 Volvo S80, N/A; Do Not Gap, Gap is Preset
• Fits 2010 Volvo V70, N/A; Do Not Gap, Gap is Preset; To Chassis # 134000
• Fits 2010 Volvo XC60, N/A; Do Not Gap, Gap is Preset
• Fits 2010 Volvo XC70, N/A; Do Not Gap, Gap is Preset; To Chassis # 94000
• Fits 2008-2010 Volvo XC70, N/A; Do Not Gap, Gap is Preset
• Fits 2007-2010 Volvo XC90, N/A; Do Not Gap, Gap is Preset
• Fits 2008-2009 Subaru Legacy, N/A; Do Not Gap, Gap is Preset
• Fits 2005-2009 Subaru Outback, N/A; Do Not Gap, Gap is Preset
• Fits 2004-2009 Volvo S60, N/A; Do Not Gap, Gap is Preset
• Fits 2004-2009 Volvo V70, N/A; Do Not Gap, Gap is Preset
• Fits 2004-2008 Subaru Forester, N/A; Do Not Gap, Gap is Preset
• Fits 2006-2007 Subaru B9 Tribeca, N/A; Do Not Gap, Gap is Preset
• Fits 2004-2007 Subaru Impreza, N/A; Do Not Gap, Gap is Preset
• Fits 2006 Saab 9-2X, N/A; Do Not Gap, Gap is Preset
• Fits 2004-2006 Subaru Baja, N/A; Do Not Gap, Gap is Preset

Quality Assurance

Bosch OE Fine Wire Iridium spark plugs are built around OE-style electrode materials and factory-specified dimensions for direct replacement service. FR7NI33 follows the preset-gap requirement and the listed heat range, seat type, and thread specifications for the confirmed applications above.