This Ignition Coil, manufactured by Wabco under MPN 4421977022, is a critical component within the ABS Hydraulic Unit of braking systems. It functions to provide the high-voltage spark needed to initiate combustion, ensuring optimal engine performance and efficient braking control. This coil measures 48 x 34 x 45 mm and is manufactured to OE specification, delivering reliability and consistent performance, and improving the overall efficiency of the braking system. Basically, the ignition coil takes your car’s 12 – volt power and boosts it up to a really high voltage – tens of thousands of volts. That high voltage is what creates the spark in your spark plugs, and that spark is what ignites the air – fuel mixture in the engine, making it run. Each cylinder usually has its own coil these days, or sometimes a coil pack serving multiple cylinders. It’s a pretty simple idea, but it’s gotta happen perfectly every time the engine fires. It’s part of the ignition system, naturally. It sits right in the path of getting that spark to the engine. It doesn’t directly connect to the brakes or ABS – that listing under ‘Brakes’ is a bit of a website quirk, don't worry about that. It's an electrical component powering combustion. A good way to think of it is it’s like a little power plant for each cylinder. A failing ignition coil causes all sorts of problems. You’ll likely notice misfires – the engine will run rough, maybe shake a little. It'll probably feel like a loss of power, especially when accelerating. Your check engine light will almost certainly come on. Sometimes a bad coil will cause the car not to start at all. It acts like a shield, protecting the rest of the ignition system from overload. If it goes bad, other parts can be damaged. Replacing a coil is usually pretty straightforward, and you can find them easily enough online – places like Fixparts Online carry a good selection. It’s one of those things that, when it's working, you don’t even think about it. But when it’s not, you’ll definitely notice. Reliable performance guaranteed: Ignition Coil (MPN 4421977022) has a 12-month warranty!

About Wabco

WABCO specializes in air braking systems, EBS, ABS, ADAS, and trailer control systems.

Why Choose Wabco?

• Wabco parts are known for lasting a long time, saving you money on repairs in the long run. • We have a huge selection of parts, so you’re likely to find exactly what you need for your vehicle. • Our parts meet or exceed industry standards, giving you peace of mind on the road. • Wabco has been a trusted name in auto parts for decades, with a reputation for quality and reliability. Wabco delivers excellence, FixParts Online delivers to your door.