Bosch 8515 EVO Spark Plug for Turbocharged GDI Engines

The Bosch 8515 EVO Spark Plug is engineered to deliver maximum ignition performance in the extreme combustion environment of modern turbocharged engines with gasoline direct injection (GDI). Designed to withstand the high mechanical and performance demands placed on spark plugs by turbocharged GDI engines, this premium spark plug provides reliable ignition even under the most challenging conditions.

Advanced Engineering for Extreme Conditions:

• Features increased thermomechanical, mechanical, and electrical strength to withstand extreme combustion pressures and mega knocking
• Improved insulator and housing design provides increased head-bending strength, reducing installation damage risk
• High dielectric strength (greater than 45 kV) ensures reliable performance in advanced engines
• Optimized gas seal tightness in the cylinder head for superior performance

Premium Precious Metal Construction:

• Laser-welded iridium alloy pin on the center electrode for exceptional durability
• Platinum-iridium alloy plate on the ground electrode delivers long service life
• High wear resistance ensures extended performance
• Pre-gapped at the factory for convenient installation

Developed and produced with the same high quality standards as original equipment spark plugs, the Bosch 8515 EVO represents advanced OE spark plug technology. This spark plug is pre-gapped and requires no gap adjustment—adjusting the gap may damage the electrodes. Always torque to the specification printed on the package for optimal performance.