Bosch 8113 Spark Plug

Bosch OE Fine Wire Double Platinum Spark Plug 8113

Bosch 8113 is an OE Fine Wire Double Platinum spark plug built for steady ignition performance and extended service life. It uses platinum on the center electrode and a platinum inlay on the ground electrode to help reduce gap erosion and maintain consistent firing over time.

Compatible With Ford Ranger, Ford Crown Victoria, Ford F-150, Ford E-250, Ford E-350 Super Duty, Lincoln Town Car, Mercury Grand Marquis, Mazda B4000, and other listed applications, this Bosch double platinum plug is a direct OE-style replacement for vehicles that call for a tapered-seat, 14 mm spark plug with a preset gap.

Key Features

• OE Fine Wire Double Platinum design for stable ignition performance
• Platinum center electrode tip with platinum ground electrode inlay
• Helps reduce gap erosion for longer service life
• Resistor spark plug with 6000 ohm resistance
• 14 mm thread diameter, 17.5 mm reach, tapered seat
• Preset 1.1 gap; do not gap where fitment notes specify preset gap
• Non-projected ceramic insulator and standard ground configuration
• Part number 8113 for OE-style replacement matching listed applications

Product Details

Bosch’s OE Fine Wire Double Platinum line focuses on OE-level ignition geometry and durability. The fine-wire platinum center electrode and platinum-enhanced ground electrode are used to maintain consistent spark quality while resisting wear, which is important in applications that specify double platinum construction. Bosch 8113 is a fitment-based replacement for many Ford, Lincoln, Mercury, and Mazda vehicles, including 2007-2012 Ford Mustang, 2007-2011 Ford Crown Victoria, 2006-2011 Lincoln Town Car, 2006-2011 Mercury Grand Marquis, 2001-2003 Ford Ranger, 2000-2003 Ford F-150, and 1998-2000 Mazda B4000. The part number 8113 is also listed for additional Ford truck and van applications across the 1996-2014 model years shown in the fitment data.

Common Uses

• Restoring weak spark or inconsistent ignition performance
• Replacing worn plugs with excessive electrode wear
• Addressing misfire concerns related to aged spark plugs
• Maintaining OE-style ignition performance in high-mileage engines
• Servicing vehicles that require a preset-gap double platinum plug

Installation Notes

Verify engine application by year, make, and model before installation. This plug uses a preset 1.1 gap, and fitment notes indicate do not gap on applications marked “Do Not Gap, Gap is Preset.” Confirm the tapered seat, 14 mm thread diameter, 17.5 mm reach, and heat range 6 match the engine specification. Use proper spark plug service procedures and torque to the vehicle manufacturer’s specification.

Quality Assurance

Bosch engineers this spark plug to meet Original Equipment specifications for double platinum applications. The platinum-on-platinum electrode design is used to improve durability and support long service life in the listed Ford, Lincoln, Mercury, and Mazda applications.