Bosch 8525 EVO Spark Plug for Turbocharged GDI Engines

The Bosch 8525 EVO spark plug is engineered for maximum ignition performance in turbocharged engines with direct gasoline injection (GDI). Designed to meet the demanding requirements of modern high-performance engines, this premium spark plug delivers reliable ignition throughout its extended service life, even under extreme combustion conditions.

Advanced Engineering for Modern Engines:

• Improved insulator design with high dielectric strength greater than 45 kV withstands irregular combustion known as mega knocking
• Laser-welded iridium alloy pin on center electrode and platinum-iridium alloy plate on ground electrode ensures long service life and high wear resistance
• Improved insulator and housing design increases head bending strength, reducing risk of damage during installation and optimizing gas seal tightness
• Increased thermomechanical, mechanical, and electrical strength for extreme pressure resistance

Installation Notes:

• Pre-gapped at factory and does not require gap adjustment
• Specially indexed and must be torqued using a torque wrench to proper specification
• Adjusting the gap may damage the center and ground electrodes

Bosch EVO spark plugs are developed and produced with the same high quality as original equipment spark plugs, making them an ideal choice for both OE replacement and performance applications in modern turbocharged gasoline direct injection engines.