These liners, sometimes called cylinder liners, are basically sleeves that fit inside the engine block’s cylinders. They create the actual surface the piston rings slide against as the piston moves up and down. They're designed to handle a lot of heat and pressure from combustion, and they’re usually made of a very durable cast iron or a special alloy. Some are “wet sleeve” meaning they’re cooled directly by the engine coolant, others are “dry sleeve” and rely on the engine block for cooling. They’re a fundamental part of the engine’s combustion process. Basically, the explosion pushes the piston down, and the liner is what keeps everything sealed and directs that force. They help convert that combustion energy into the power that moves your vehicle. They work closely with the piston rings to maintain compression, which is critical for engine efficiency. Well, if these liners get scored or worn, you lose compression. You’ll notice if that happens – reduced power, increased oil consumption, and maybe even some rough idling. They really act like a shield protecting the engine block itself from wear. Replacing them is often a lot cheaper than replacing the entire block. You can find a good selection of liners at places like Fixparts Online, and getting the right ones is key. If they're damaged, it affects how well your engine runs, how much fuel it uses, and ultimately, how long your engine will last. They're not something you want to put off addressing if you’re having problems. Safe driving starts here: Liner (MPN 007WN7400) has a 12-month warranty!

About MAHLE

Mahle is a leading German supplier of engine components and thermal management solutions, celebrated for its technological innovation. Based in Germany, Mahle drives advancements in automotive efficiency and sustainability.

Why Choose MAHLE?

• MAHLE parts are built to last, using high-quality materials and manufacturing processes so you get reliable performance. • We offer a wide range of parts, covering everything from engine components to filters and beyond – meaning you can find what you need all in one place. • MAHLE is a trusted name in the automotive industry, with over 100 years of experience and a commitment to innovation. • Our parts are designed to meet or exceed original equipment specifications, giving you peace of mind and helping your vehicle run its best. Performance you can rely on – MAHLE parts from FixParts Online.