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. Choose quality: Valve Seat (MPN 0319428) has a 12-month warranty!

About Scania

Scania is a global leader in heavy trucks, buses, and engines, focusing on innovation, fuel efficiency, and reliable transport solutions.

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. Drive with confidence – choose Scania parts at FixParts Online.