Bosch 96338 Spark Plug

Overview of Bosch OE Fine Wire Double Iridium Spark Plug 96338

The Bosch OE Fine Wire Double Iridium Spark Plug 96338 is engineered for reliable ignition performance in select Ford vehicles. Designed specifically for Ford EcoSport, Fiesta, and Focus models, this spark plug offers precise ignition control and durability for 4-cycle engines.

• Double iridium center electrode tip for enhanced durability
• Tapered ground electrode tip design with copper core for efficient spark
• Standard ground configuration with a single ground electrode
• 6000 ohm resistance resistor to reduce electrical noise
• Pre-gap size of 0.7 mm for optimal spark gap
• 14 mm hex size and 25 mm reach for proper fitment
• Ceramic projected insulator for improved heat dissipation
• Manufacturer heat range rating of 5 for balanced thermal performance
• Tapered seat type ensuring secure installation

Detailed Product Features and Specifications

This Bosch spark plug features a double iridium center electrode tip, combining iridium with a nickel-chromium-iron and copper core to provide a fine wire design that supports consistent ignition and longer service life. The ground electrode tip is tapered and constructed from platinum, nickel-chromium-iron, and copper, enhancing spark efficiency and wear resistance. The spark plug includes a 6000 ohm resistor to minimize radio frequency interference, ensuring stable engine electronics operation. Its ceramic projected insulator improves heat management, while the standard ground configuration with a single electrode supports reliable spark delivery. The 14 mm hex size and 25 mm reach are designed to fit Ford EcoSport, Fiesta, and Focus models precisely, matching OEM specifications.

About the OE Fine Wire Double Iridium Product Line

The Bosch OE Fine Wire Double Iridium line focuses on delivering spark plugs with fine wire iridium electrodes on both the center and ground sides. This design reduces voltage requirements for ignition, improves fuel efficiency, and extends spark plug life compared to conventional plugs. The 96338 spark plug exemplifies this technology by combining durable materials and precise engineering to meet the demands of modern Ford 4-cycle engines.

Applications and Common Issues Addressed

• Replacement for worn or fouled spark plugs in Ford EcoSport, Fiesta, and Focus
• Improves ignition stability and reduces misfires
• Helps restore engine performance and fuel economy
• Reduces radio frequency interference affecting vehicle electronics
• Addresses rough idling and hard starting conditions

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.7 mm pre-gap before installation. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the tapered seat. The 14 mm hex size allows for standard spark plug socket compatibility. It is recommended to replace all spark plugs simultaneously to maintain balanced engine performance.

Quality Assurance and Warranty

Bosch OE Fine Wire Double Iridium spark plugs are manufactured to meet strict OEM standards for fit, form, and function. The 96338 spark plug includes a built-in resistor to protect vehicle electronics and is constructed with high-quality materials such as iridium, platinum, and ceramic insulators. While specific warranty details may vary, Bosch products typically come with a limited warranty against manufacturing defects when installed and used according to guidelines.