Bosch 9615 Spark Plug

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

The Bosch 9615 spark plug is engineered for reliable ignition performance in select Lexus, Nissan, Toyota, and Volvo models. Featuring advanced iridium and platinum materials, this spark plug supports efficient combustion and consistent engine operation.

• Resistance: 3000 ohms for noise suppression
• Ground Electrode Tip Design: Pin-to-pin
• Center Electrode Tip Material: Iridium
• Ground Electrode Tip Material: Platinum-iridium and nickel-yttrium
• Pre-Gap Size: 1 mm
• Thread Diameter: 14 mm with 26.5 mm reach
• Hex Size: 16 mm for installation
• Manufacturer Heat Range: 7
• Seat Type: Flat
• Insulator Material: Ceramic, non-projected type
• Designed for 4-cycle engines

About the OE Fine Wire Double Iridium Pin-to-Pin Product Line

The OE Fine Wire Double Iridium Pin-to-Pin line by Bosch focuses on precision ignition components that combine fine wire iridium center electrodes with durable platinum-iridium ground electrodes. This design enhances spark efficiency and electrode longevity, making it suitable for modern engines requiring consistent ignition under varied driving conditions. The pin-to-pin ground electrode tip design further supports stable spark formation and improved combustion.

Detailed Product Description

The Bosch 9615 spark plug incorporates a 3000 ohm resistor to reduce electromagnetic interference, protecting vehicle electronics. Its iridium center electrode tip, supported by a nickel-yttrium and copper core, offers durability and stable spark delivery. The single ground electrode with a pin-to-pin tip design uses a platinum-iridium and nickel-yttrium alloy to resist wear and maintain optimal gap over time. The flat seat and 26.5 mm reach ensure proper fitment and sealing in compatible engines. Ceramic insulator material and a non-projected insulator type provide reliable insulation and heat dissipation. This spark plug is designed for 4-cycle engines commonly found in Lexus Avalon, Toyota Camry, Nissan Frontier, Volvo XC60, and other compatible models.

Compatible Vehicles and Common Applications

• Ignition replacement for Lexus ES350, RX350, RX450h
• Suitable for Nissan Maxima, Frontier, and Pathfinder
• Fits Toyota Avalon, Camry, Highlander, RAV4, Sienna, Venza
• Compatible with Volvo S60, S80, V60, V70, XC60, XC70, XC90
• Addresses ignition misfires, rough idling, and poor fuel economy

Installation Notes and Tips

• Use a 16 mm socket for proper installation torque
• Verify the 1 mm pre-gap before installation to ensure optimal spark
• Apply anti-seize compound on threads if recommended by vehicle manufacturer
• Ensure flat seat contact for proper sealing and heat transfer
• Replace spark plugs in sets to maintain engine balance

Quality Assurance and Warranty

Bosch spark plugs, including the 9615 model, are manufactured to meet OEM specifications for fit, form, and function. The use of premium materials such as iridium and platinum alloys supports long service life and consistent performance. While specific warranty terms may vary, Bosch products typically come with a limited warranty covering defects in materials and workmanship.