The Bosch EVO spark plug is designed for high-compression, turbocharged, gasoline direct-injection (GDI) engines, featuring an iridium firing pin and platinum-iridium ground disc for durability and a long service life. Its improved gas seal and insulator design enhance mechanical strength and prevent combustion leaks, while the high dielectric strength of its ceramic insulator (over 45 kV) enables it to withstand extreme conditions like mega knocking, ensuring reliable ignition even under challenging conditions. 
 
Key Features and Benefits 
For GDI Engines: 
Specifically engineered to handle the higher compression and demands of modern turbocharged GDI engines. 

Durable Materials: 
Utilizes a laser-welded iridium firing pin and a platinum-iridium alloy ground electrode for extended life and wear resistance. 

Improved Gas Seal: 
A tighter, improved gas seal design prevents leaks through the spark plug body. 

Stronger Ceramic Insulator: 
A more robust ceramic insulator provides increased strength, making it less prone to damage during installation, especially in difficult-to-reach areas. 
 
High Dielectric Strength: 
Withstanding voltages greater than 45 kV, the plug can endure irregular combustion events like mega knocking, which can cause damage in advanced engines. 

Longer Service Life: 
The combination of precious metal electrodes and improved design contributes to a significantly longer service life compared to other types of spark plugs. 

Mega Knock Resistance: 
The plug's overall design, particularly its high dielectric strength and improved insulator, helps it withstand the extreme pressures and conditions caused by mega knocking. 
 
Details Parameters
Length (unpacked): 83 mm
Width (unpacked): 17 mm
Thread: M 12 x 1,25
Tightening torque (ft.lbs): 17 FT. LBS
Type of connection: Non-detachable DIN/SAE head
Tightening torque: 23 Nm
Number of ground electrodes: 1
Sealing seat: flat and solid
Electrode gap: 0.7 mm
Interference suppression / burn-off restistor: 6 kOhm
Spark position: 4 mm
Thread length: 26.5 mm
Center electrode material: Ir
Width across flats: 14 mm
Ground electrode material: Ir