Bosch 9620 Spark Plug

Overview of Bosch OE Fine Wire Double Iridium Pin-to-Pin Spark Plug

The Bosch 9620 spark plug is engineered for reliable ignition performance in select Chevrolet, Nissan, and Toyota vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Resistance: 6000 ohms for optimal electrical noise suppression
• Ground Electrode Tip Design: Pin-to-pin for precise spark delivery
• Center Electrode Tip Material: Iridium for durability and stable ignition
• Ground Electrode Tip Material: Platinum-iridium and nickel-yttrium for enhanced wear resistance
• Pre-Gap Size: 1 mm for proper spark gap
• Thread Diameter: 12 mm with 26.5 mm reach
• Hex Size: 14 mm for standard installation tools
• Insulator Material: Ceramic with non-projected design
• Manufacturer Heat Range: 8, suitable for specific engine requirements
• Seat Type: Flat for secure sealing

Details on the OE Fine Wire Double Iridium Pin-to-Pin Product Line

The Bosch OE Fine Wire Double Iridium Pin-to-Pin spark plug line features a dual iridium electrode design that enhances ignition reliability and longevity. This product line focuses on precise spark control through its pin-to-pin ground electrode tip design, which improves combustion efficiency and reduces misfires. The use of premium materials such as iridium and platinum-iridium alloys ensures consistent performance under demanding conditions.

Technical Description and Application

The Bosch 9620 spark plug incorporates a nickel-yttrium and copper core center electrode, combined with a ceramic insulator to withstand high temperatures and electrical stress. Its 6000 ohm resistor helps minimize radio frequency interference, making it suitable for modern vehicles with sensitive electronics. The flat seat and 26.5 mm reach ensure proper fitment and sealing in compatible engines. This spark plug is designed for 4-cycle engines and is compatible with Chevrolet, Nissan, and Toyota models including the Nissan Altima, Sentra, Rogue, Rogue Select, Cube, City Express, NV200, and Toyota Prius and Prius Prime.

Common Issues Addressed by Bosch 9620 Spark Plug

• Engine misfires and rough idling
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Increased emissions from inefficient ignition
• Wear-related performance degradation in ignition components

Installation Notes and Tips

When installing the Bosch 9620 spark plug, ensure the engine is cool to prevent damage to the threads. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid over-tightening or under-tightening. Verify the pre-gap size of 1 mm before installation, although the spark plug comes pre-gapped. Compatible with standard 14 mm hex sockets, this spark plug fits securely with a flat seat design. Replace all spark plugs in the engine simultaneously for balanced performance.

Quality Assurance and Warranty

Bosch spark plugs, including the 9620 model, are manufactured to meet strict OEM standards for durability and performance. The use of high-grade iridium and platinum materials contributes to extended service life. While specific warranty details may vary, Bosch typically offers coverage against manufacturing defects. Refer to Bosch’s official documentation for exact warranty terms.