RAK makes sure to use the highest quality components feasible. We sell Genuine OEM products as well as aftermarket replacements. Obviously the OEM items will be the exact same as if it was bought at the dealership parts counter. Our aftermarket replacements for factory remotes are of higher quality than you could find from competitors or on other marketplaces. We use three types of Remote Keyless Signal testers to ensure the products are functioning properly before we send it to you. Some products are checked on specific kinds of testers like smart keys. When there is onboard programming, orders are shipped with programming instructions. Free expert tech support is included with purchases. Batteries are always included with products that use batteries.