* Cork gasket: These are typically multiple pieces that form a complete seal around the pan. They are less expensive but generally require more careful installation and are more prone to leaks.
* Silicone gasket: These are usually one-piece, but the term "one piece" refers to the *material* being a single, molded piece of silicone rubber, not that it's a single, simple piece to install compared to a multi-piece cork gasket. They are more expensive but offer a better seal and are generally easier to install.
* Fel-Pro PermaTorque (or similar): These are a type of reusable, rubberized gasket that provides an excellent seal. They are more expensive than cork but less expensive than some silicone gaskets and offer excellent reliability.
When ordering, you'll need to specify the year and model of your 350 Chevy engine (as oil pans varied slightly) to ensure you get the correct gasket. Additionally, make sure you specify whether you want cork, silicone, or a PermaTorque style gasket.
