Discover the Bosch EVO Spark Plug

Bosch EVO spark plug in turbocharged engine with direct gasoline injection.

Robust design for extremely high requirements

Bosch EVO spark plugs are engineered for a permanently reliable ignition performance in turbocharged engines with direct gasoline injection. They are developed and produced with the same high quality as original equipment spark plugs.

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Technical details

Improved dielectric strength through optimized insulator design
Increased mechanical robustness, even with repeated installation
High gas tightness over the entire lifetime
Improved corrosion protection through a nickel coating process developed by Bosch
Increased wear resistance through reduced wear of the electrodes

TechNugget

The Bosch Evo Spark Plug was specially developed for the harsh environment inside turbocharged engines with direct gasoline injection. These engines operate at very high pressures, often reaching the “knock limit”. However, extreme knocking events, known as mega knocking, can also occur.

Watch the video to see how these self-ignition events occur and the unpleasant consequences they can have.

Mega Knocking

In turbocharged engines with direct gasoline injection, extreme knocking events (mega knocking) can occur. These spontaneous self-ignition events are often caused by

unburnt fuel residues
smallest particles from returned gases

The pressure in the cylinder can increase so much that an unfavorable piston position can lead to engine damage. The Bosch EVO spark plug is therefore particularly robustly designed for use in such engines.

Watch the video to find out more about mega knocking.