Bosch 6726 Spark Plug

Overview of Bosch OE Fine Wire Platinum Spark Plug 6726

The Bosch OE Fine Wire Platinum Spark Plug 6726 is engineered for reliable ignition performance in a wide range of vehicles including BMW, Toyota, Mercedes-Benz, and Nissan models. Designed with precision, this spark plug supports efficient combustion and consistent engine operation.

• Platinum center electrode tip for enhanced durability
• Tapered ground electrode tip design for improved spark exposure
• 6000 ohm resistance to reduce electrical noise
• Flat seat type with a 14mm thread diameter and 19mm reach
• Ceramic insulator with non-projected design for heat resistance
• Manufacturer heat range rating of 8 for optimal thermal performance
• Compatible with 4-cycle engines across multiple makes and models

Detailed Product Features and Specifications

This Bosch spark plug features a platinum center electrode tip that provides long-lasting wear resistance and stable spark delivery. The ground electrode uses a tapered tip made from nickel-yttrium, which enhances ignition efficiency by increasing spark exposure. The spark plug includes a 6000 ohm resistor to minimize radio frequency interference, ensuring smooth operation of vehicle electronics.

With a pre-gap size of 0.8 mm and a single ground electrode, the spark plug is designed for standard ignition systems. The ceramic insulator is non-projected, offering excellent heat insulation and durability. The flat seat type and 16mm hex size facilitate straightforward installation and secure fitment. This spark plug is suitable for 4-cycle engines and has a manufacturer heat range of 8, balancing heat dissipation and combustion chamber protection.

About the OE Fine Wire Platinum Product Line

The Bosch OE Fine Wire Platinum line focuses on precision-engineered spark plugs that deliver consistent ignition performance and extended service life. The fine wire platinum center electrode reduces voltage requirements and wear, making it suitable for modern engines requiring reliable spark delivery. This product line is designed to meet or exceed original equipment specifications, ensuring compatibility and performance across various vehicle makes and models.

Compatible Vehicles and Common Applications

• Compatible with BMW 325i, 328i, and 525i models
• Suitable for Toyota 4Runner, Corolla, and Tacoma vehicles
• Fits Mercedes-Benz E320, S500, and C220 series
• Works with Nissan 200SX, Sentra, and Pathfinder
• Also compatible with Buick, Chevrolet, Dodge, Lexus, and Volkswagen models

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.8 mm before installation
• Use a 16mm socket wrench for proper torque application
• Verify thread diameter (14mm) and reach (19mm) match vehicle specifications
• Apply anti-seize compound on threads if recommended by the vehicle manufacturer
• Inspect ignition wires and coils for wear during replacement

Quality Assurance and Warranty

Bosch OE Fine Wire Platinum Spark Plug 6726 is manufactured to meet strict quality standards, ensuring reliable ignition and engine performance. The spark plug includes a resistor to reduce electrical interference and is constructed with high-grade materials such as nickel-yttrium and copper core electrodes. While specific warranty details vary by region, Bosch products typically come with a limited warranty covering defects in materials and workmanship.