This little piece is where the valve actually seals against the cylinder head. Think of it like the rim of a glass meeting a coaster—it creates that tight seal. It's machined to a very precise angle, and that’s super important for how well the valve closes. It's what allows the engine to build compression, which ultimately makes power. Different engines use different types – some are swirled, some are stepped, and materials vary too – but they all do that basic sealing job. It’s a critical part inside the engine, specifically within the cylinder head. Every time the engine fires, the valves are opening and closing, and the valve seat is taking a beating. It’s part of the whole combustion process – air and fuel come in, get ignited, and exhaust goes out. Without a good valve seal, that process just doesn’t happen efficiently. It's a pretty small part, but it's working constantly whenever the engine is running. Honestly, it’s hugely important. If a valve seat gets worn, damaged, or burned, you'll lose compression. You’ll notice if it’s bad – things like rough idling, a loss of power, or even the engine misfiring. It can also cause increased emissions. A bad valve seat can eventually lead to more serious engine damage if left unchecked. They’re typically replaced when you’re doing a valve job or a head rebuild, but sometimes you’ll replace just the seats if they’re the only thing damaged. You can find them on sites like Fixparts Online, and there’s a lot of variation based on your specific engine, so getting the right one is key. Built to last: Valve Seat (MPN 2171484) includes a 12-month warranty!

About Scania

Scania provides innovative and sustainable transport solutions for commercial vehicles worldwide.

Why Choose Scania?

• Scania parts are built to last, even in tough conditions, which means fewer repairs and less downtime for your vehicle. • We use genuine Scania designs and materials, so you can be sure everything fits perfectly and works as it should. • Choosing Scania parts helps keep your vehicle’s value high, because buyers trust the quality and reliability of our brand. • Our wide network of service centers and dealers means you can easily get the parts you need, when you need them, along with expert support. Scania delivers excellence, FixParts Online delivers to your door.