Bosch 8111 Spark Plug

Reliable Ignition Performance for Select Ford and Cadillac Models

The Bosch OE Fine Wire Double Platinum Spark Plug 8111 is engineered to deliver consistent ignition performance for a range of vehicles including Ford F-150, Lincoln Navigator, and Cadillac DeVille. Designed with durable platinum electrodes and a tapered seat, this spark plug supports efficient combustion and long service life.

Key Features of Bosch Spark Plug 8111

• Double platinum electrodes for enhanced durability and stable spark
• 6000 ohm resistance resistor to reduce electrical noise interference
• Standard ground electrode tip and configuration for reliable ignition
• Pre-gap size of 1.5 mm optimized for 4-cycle engines
• Nickel-yttrium and copper center electrode core for improved conductivity
• Ceramic insulator material with non-projected design for heat resistance
• Tapered seat type and 14 mm thread diameter for secure fitment
• Manufacturer heat range rating of 7 suitable for various driving conditions
• Compatible with multiple Ford, Lincoln, Mercury, and Cadillac models

About the OE Fine Wire Double Platinum Product Line

The Bosch OE Fine Wire Double Platinum line features spark plugs with fine wire platinum electrodes on both the center and ground electrodes. This design reduces electrode wear and maintains a consistent spark gap over time, contributing to improved ignition reliability and fuel efficiency. The 8111 spark plug benefits from this technology, making it suitable for vehicles requiring precise ignition performance.

Detailed Product Description

The Bosch 8111 spark plug is designed for secondary ignition systems in 4-cycle engines. Its platinum center and ground electrode tips provide extended durability compared to conventional spark plugs. The 1.5 mm pre-gap size ensures optimal spark exposure, while the 6000 ohm resistor minimizes radio frequency interference. The ceramic insulator and non-projected design help maintain thermal stability and prevent fouling. With a 17.5 mm reach and 16 mm hex size, installation and removal are straightforward for compatible vehicles.

Applications and Common Issues Addressed

• Restores proper ignition timing and spark consistency in Ford F-150 and Lincoln Navigator
• Reduces misfires and rough idling in Cadillac DeVille and Mercury Sable
• Improves fuel efficiency and engine responsiveness in Ford E-150 Econoline series
• Helps prevent electrode wear and maintains spark gap for extended service intervals
• Minimizes electrical interference affecting onboard electronics

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Use a torque wrench to tighten the spark plug to manufacturer specifications
• Check and adjust the spark plug gap if necessary before installation
• Inspect ignition wires and coils for wear during replacement
• Replace spark plugs in sets to maintain balanced engine performance

Quality Assurance and Warranty

Bosch spark plugs, including the OE Fine Wire Double Platinum 8111, are manufactured to meet strict OEM standards. The use of high-quality materials such as platinum and nickel-yttrium alloys ensures durability and consistent performance. While specific warranty details may vary, Bosch products typically come with a limited warranty covering defects in materials and workmanship.