Bosch 9746 Spark Plug

Reliable Ignition Performance for Ram 2500 and 3500

The Bosch OE Fine Wire Iridium spark plug 9746 is engineered to deliver consistent ignition and efficient combustion for Ram 2500 and 3500 models. Designed with advanced materials and precise specifications, this spark plug supports optimal engine performance and durability.

Key Features of Bosch OE Fine Wire Iridium Spark Plug 9746

• Resistance rating of 6000 ohms for effective electrical noise suppression
• Standard ground electrode tip and configuration for reliable spark delivery
• Copper ground electrode core material enhances heat dissipation
• Pre-gap size of 1.1 mm optimized for ignition efficiency
• Single ground electrode with flat seat type for secure fitment
• 16 mm hex size and 14 mm thread diameter for compatibility with Ram engines
• Reach length of 26.5 mm suitable for specified engine designs
• Center electrode composed of nickel-yttrium and copper with platinum-iridium tip for durability
• Ground electrode tip made from platinum-iridium, nickel-yttrium, and copper for extended wear resistance
• Ceramic projected insulator for improved voltage insulation and heat resistance
• Manufacturer heat range rating of 8 to match engine thermal requirements
• Designed for 4-cycle engines commonly found in Ram 2500 and 3500 trucks

About the Bosch OE Fine Wire Iridium Product Line

The OE Fine Wire Iridium line from Bosch focuses on precision-engineered spark plugs that utilize fine wire iridium technology to improve ignition reliability and longevity. This product line combines advanced electrode materials such as platinum-iridium and nickel-yttrium alloys to reduce wear and maintain consistent spark performance over time. The 9746 spark plug benefits from this technology, providing a balance of durability and efficient combustion tailored for heavy-duty Ram trucks.

Detailed Product Description

The Bosch 9746 spark plug is designed to meet the ignition demands of Ram 2500 and 3500 vehicles. Its 6000 ohm resistor helps minimize electromagnetic interference, protecting sensitive onboard electronics. The copper core ground electrode and platinum-iridium tips on both center and ground electrodes ensure stable spark generation and extended service life. The ceramic projected insulator enhances voltage insulation and heat management, while the flat seat and precise thread dimensions guarantee proper installation and sealing. With a manufacturer heat range of 8, this spark plug is suited for engines requiring moderate heat dissipation.

Common Applications and Issues Addressed

• Replacement for worn or fouled spark plugs in Ram 2500 and 3500 engines
• Improves ignition stability and reduces misfires under heavy load conditions
• Helps restore fuel efficiency by ensuring complete combustion
• Reduces engine hesitation and rough idling caused by degraded spark plugs
• Supports consistent engine starting performance in demanding environments

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 1.1 mm pre-gap before installation. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque specification to avoid damage to the threads or improper sealing. The 16 mm hex size allows for standard spark plug socket compatibility. Inspect the spark plug threads and seat area for cleanliness to ensure a proper fit. This spark plug is designed specifically for 4-cycle engines in Ram 2500 and 3500 models; verify compatibility with your vehicle’s engine specifications before installation.

Quality Assurance and Warranty

Bosch OE Fine Wire Iridium spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The use of premium materials such as platinum-iridium and copper alloys contributes to long service life. While specific warranty details are not provided, Bosch products typically adhere to industry standards for automotive ignition components.