Basically, this plug does what all spark plugs do – it creates the spark that ignites the air – fuel mixture in your engine, making it run. But the “suppressed” part is key. It adds a resistor inside the plug itself. That resistor lowers the voltage spike when the plug fires. It’s designed to minimize electrical interference. Think of it like this – when a spark plug fires, it sends out a little burst of electricity. Without suppression, that burst can mess with things like your radio, your engine control unit, even things like anti – lock braking systems. This plug, with its built – in resistor, acts like a shield, cleaning up that electrical signal and keeping everything else running smoothly. It’s not that your car won’t run without it, it's that other systems might not work quite right, or you’ll get a lot of static on the radio. It helps prevent false readings and malfunctions in sensitive electronic components. Modern cars are loaded with computers, and they don’t like electrical noise. You’ll notice if you have a bad suppressed plug mostly through radio interference – lots of static, or signals cutting in and out. Sometimes it can even cause a misfire or rough running, though that’s usually with multiple bad plugs. You can find these pretty easily online; we stock them at Fixparts Online, and lots of other places do too. It’s a relatively cheap part to replace, and a good way to keep everything working as it should. Top choice for reliability: Suppressed Spark Plug (MPN 0242229659) includes a 12-month warranty!

About Bosch

Robert Bosch GmbH is a global leader in automotive technology, offering high-quality parts and systems that enhance vehicle efficiency, safety, and reliability.

Why Choose Bosch?

• Bosch parts are known for lasting a long time, so you won't have to replace them often. • They're made with high-quality materials and tested thoroughly, meaning they perform reliably. • Bosch offers a wide range of parts, so you're likely to find what you need for almost any vehicle. • Mechanics and drivers around the world trust Bosch – it’s a name you can depend on. Drive with confidence – choose Bosch parts at FixParts Online.