Bosch 8122 Spark Plug

Overview of Bosch OE Fine Wire Double Platinum Spark Plug 8122

The Bosch OE Fine Wire Double Platinum Spark Plug 8122 is engineered for reliable ignition performance in a range of vehicles including Toyota, Nissan, Lexus, and Subaru models. Designed with durable platinum electrodes and a ceramic insulator, this spark plug supports efficient combustion and consistent engine operation.

• Double platinum electrodes for extended durability
• 6000 ohm resistor to reduce electrical interference
• Standard ground electrode tip and configuration
• Flat seat type with 14mm thread diameter and 26.5mm reach
• Compatible with 4-cycle engines in select Toyota, Nissan, Lexus, Subaru, Infiniti, and Suzuki vehicles

Detailed Features and Specifications

This Bosch spark plug features a center electrode tip made of platinum combined with a nickel-yttrium and copper core, enhancing conductivity and wear resistance. The ground electrode tip also uses platinum and nickel-yttrium for improved longevity. The insulator is constructed from high-quality ceramic material with a non-projected design, ensuring reliable insulation and heat dissipation. With a pre-gap size of 1.1 mm and a manufacturer heat range of 7, this spark plug is optimized for stable ignition under various operating conditions. The 16mm hex size allows for standard installation tools, and the flat seat ensures proper sealing in the combustion chamber.

About the OE Fine Wire Double Platinum Product Line

The OE Fine Wire Double Platinum line by Bosch is designed to provide consistent ignition performance with enhanced electrode durability. The fine wire design reduces voltage requirements for spark generation, while the double platinum electrodes extend service life compared to conventional spark plugs. This product line is suitable for modern 4-cycle engines requiring precise ignition timing and reliable spark delivery, such as those found in many Toyota, Nissan, Lexus, and Subaru vehicles.

Compatible Vehicles and Applications

• Toyota 4Runner, Tacoma, Tundra, Land Cruiser, Sequoia, FJ Cruiser, LX570
• Nissan Altima, Maxima, Frontier, Titan, Sentra, Pathfinder, Quest, 350Z
• Lexus GX460, RX, LX570, IS, ES, GS series
• Subaru Outback, Legacy, Tribeca
• Infiniti G35, FX35, FX45, Q45, QX4, QX56
• Suzuki Grand Vitara

Common Issues Addressed by Bosch Spark Plug 8122

• Engine misfires and rough idling
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Increased exhaust emissions from poor ignition
• Loss of engine power and acceleration

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 1.1 mm as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or improper sealing. The 16mm hex size fits standard spark plug sockets. Ensure the engine is cool before replacing spark plugs to prevent thread damage. This spark plug is designed for 4-cycle engines and is not intended for outdoor power equipment.

Quality Assurance and Warranty

Bosch OE Fine Wire Double Platinum Spark Plug 8122 is manufactured to meet strict OEM standards for fit, form, and function. The use of premium materials such as platinum electrodes and ceramic insulators ensures durability and consistent performance. While specific warranty details may vary, Bosch products typically come with a limited warranty covering defects in materials and workmanship.