This little guy basically takes the high – voltage electricity going from your ignition coil to your spark plugs and cleans it up. It filters out radio frequency interference, or RFI, that’s created during the spark process. It’s also designed to reduce electromagnetic interference, EMI, that can mess with other electronic systems in your car. Think of it as smoothing out the electrical signal, making sure everything runs cleanly. It sits right on the spark plug wire, right where it connects to the spark plug. You’ll usually find one on each spark plug. It’s a key part of the ignition system, working alongside the coil, wires, distributor (if your car has one), and of course, the plugs themselves. Its job isn't to make the spark, but to ensure the spark is clean and doesn’t cause issues elsewhere. Honestly, without these, you can get all kinds of weird electrical gremlins. Interference can affect your radio, your engine control unit, even things like your anti – lock brakes or airbags. It acts like a shield, preventing those signals from scrambling things up. You’ll notice if one goes bad because you might get static on the radio, or even a check engine light. They’re relatively inexpensive to replace, and doing it proactively can save you a headache down the road. We carry a good selection of these at Fixparts Online, and they’re pretty straightforward to install. They're one of those parts that doesn't get a lot of attention until something starts acting up, but they're important for keeping everything running smoothly. A warranty you can count on: Spark Plug Suppressor (MPN 0356150022) has a 12-month guarantee!

About Bosch

With a heritage of innovation, Bosch provides dependable and efficient automotive components that set industry standards.

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. Performance you can rely on – Bosch parts from FixParts Online.