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. Your satisfaction is our priority: Spark Plug Suppressor (MPN 1354489085) is covered for 12 months!

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 being reliable and lasting a long time, which can save you money on repairs in the future. • They’re a leading supplier to car manufacturers, so you’re getting the same quality parts used in many new vehicles. • Bosch invests a lot in research and development, meaning their parts often have the latest technology for better performance. • You can find Bosch parts for a wide range of vehicles, from older models to the newest cars and trucks. Bosch delivers excellence, FixParts Online delivers to your door.