Spark Plug

The way forward: Bosch spark plugs for guaranteed mobility

The Bosch range has just the right spark plug for virtually every application.

Bosch Super plus
Reliable as ever at an exceptionally high level: The “Plus” driving experience

A rare earth metal ensures that reliability goes without saying. The innovative yttrium alloy used for Bosch Super plus has its origins in motor sports, where it is seen as the key to top performance. But is has long since also found its way into ordinary vehicles on the road. Nowadays the Bosch Super plus has become part of everyday life. Its characteristic feature is the special electrode design (pointed, profiled ground electrode) requiring a lower ignition voltage.

The advantages at a glance:

• Rapid attainment of operating temperature
• Increased cold starting reliability
• Protection of engine and catalytic converter
• Set electrode gap
• Extra-long service life

Bosch Super plus is available with nickel-yttrium alloy and with platinum electrodes. The compact range of 54 types contains just the right spark plug for virtually every car.

Bosch platinum-iridium
Top performance: Noble metal for winners

Platinum is the most precious of all the noble metals. And it is also the most valuable for Bosch spark plugs, as it offers the lowest thermal and electrical conductivity of any of the noble metals as well as the least thermal expansion. Due to the fact that it is largely resistant to corrosion, Bosch platinum spark plugs also have a particularly long service life. Our platinum-iridium spark plugs feature a copper core and noble metal electrodes. Double platinum spark plugs are provided with laser-welded platinum tips (center electrode) or the electrode is platinum-tipped (ground electrode).

Even more advantages are the result:

• Rapid attainment of operating temperature
• Increased cold starting reliability
• Protection of engine and catalytic converter
• Set electrode gap
• Fine platinum-iridium electrodes for enhanced ignition and smooth engine operation
• Ideal for use in gas-driven vehicles

Bosch Super 4
Innovative and powerful: High-end for optimum starting

This high-performance spark plug operates on the latest surface air gap principle. It is the first spark plug to have four thin ground electrodes with a pointed, silver-plated center electrode. This technical superiority also becomes apparent in the engine performance in all driving situations and throughout the entire service life.

The advantages at a glance:

• Appreciably better acceleration
• Far smoother operation
• Superior engine elasticity
• Factory-set electrode gap
• Eight possible spark gaps for greater ignition reliability
• Self-cleaning thanks to surface gap design
• Extended heat range: Capacity for up to three times more cold starts than with conventional spark plugs
• Enhanced environmental and catalytic converter protection
• And: The Super 4 spark plug can also be used in older vehicles, so that they too can benefit from the advantages of modern spark plug technology

Bosch Silver
Powerful: Fully equipped to meet the sporting challenge

Bosch can offer the right alternative for all types of engine. So the range is not just restricted to four-wheel vehicles. Absolute spark plug reliability is essential for engine systems constantly operating at high revs and thus demanding top performance standards, as is the case for example with motorcycles and speedboats or even snowmobiles. Bosch Silver is designed to meet this challenge.

The silver electrode spark plug:

• Ensures reliable ignition
• Prevents engine misfire