Bosch 96338 Spark Plug

Bosch OE Fine Wire Double Iridium Spark Plug

Bosch 96338 is an OE Fine Wire Double Iridium spark plug built for precise ignition performance and extended service life. It uses an ultra-fine iridium center electrode firing pin, a projected ceramic insulator, and a tapered seat design to support consistent combustion in modern Ford engines.

This Bosch spark plug is a direct-fit choice for 2014-2017 Ford Fiesta, 2015-2018 Ford Focus, and 2018-2021 Ford EcoSport applications that call for the OE Fine Wire Double Iridium design. The preset .7 gap and resistor construction help maintain stable ignition characteristics in the specified factory applications.

Key Features

• Bosch OE Fine Wire Double Iridium line for OE-style ignition performance
• Iridium center electrode tip for durable firing performance
• Preset .7 gap; do not gap before installation
• Tapered seat and 12 mm thread diameter for the listed Ford applications
• Resistor spark plug with 6,000 ohm resistance
• Projected ceramic insulator for modern 4-cycle engine use
• Part number 96338 for easy catalog matching

Product Details

Bosch 96338 is engineered around fine-wire iridium technology to support reliable spark delivery and long wear characteristics in secondary ignition systems. The plug features a tapered ground electrode tip design, a single ground electrode, and a copper-core ground electrode construction. Its nickel-chromium-iron and copper center core, along with platinum and nickel-chromium-iron and copper ground tip materials, reflect the OE-style material mix used in modern spark plug design. For shoppers searching for a Bosch 96338 spark plug for Ford Fiesta, Focus, or EcoSport, this part matches the specified factory configuration and preset gap requirements.

The Bosch OE Fine Wire Double Iridium product line focuses on factory-style ignition performance with durable electrode materials and precise fitment details. For drivers and technicians servicing Ford Fiesta, Ford Focus, or Ford EcoSport engines, this line provides a direct replacement path where the original plug specification calls for double iridium construction.

Common Issues This Part Can Address

• Misfires caused by worn spark plug electrodes
• Hard starting from degraded ignition spark
• Rough idle related to inconsistent combustion
• Reduced throttle response from weak spark delivery
• Service intervals reached on OE-style iridium plugs

Installation Notes and Tips

Install Bosch 96338 only in applications listed for 2014-2017 Ford Fiesta, 2015-2018 Ford Focus, and 2018-2021 Ford EcoSport. The gap is preset, so do not gap the plug before installation. Verify the engine calls for a 12 mm thread diameter, 14 mm hex size, tapered seat, and the specified heat range before service. Use proper spark plug removal and installation procedures to avoid thread or insulator damage.

• Fits 2018-2021 Ford EcoSport, N/A; Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Double Iridium
• Fits 2015-2018 Ford Focus, N/A; Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Double Iridium
• Fits 2014-2017 Ford Fiesta, N/A; Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Double Iridium

Quality Assurance

Bosch is a recognized OE-focused ignition brand, and this spark plug is built to match the specified factory-style configuration for the listed Ford applications. Part number 96338 is intended for direct catalog lookup and service replacement in the confirmed fitments above.