Premium 1999 Ford Mustang Door & Window Manifolds - Restore Your Classic's Performance! These genuine OEM-spec manifolds are essential for maintaining proper vacuum distribution to your Mustang's door locks, window motors, and climate control systems. Sourced from a well-maintained '99 Mustang, these manifolds feature durable construction that withstands heat and pressure while ensuring consistent airflow throughout your vehicle's pneumatic systems. Perfect for enthusiasts restoring their fourth-generation Mustang to factory specifications or mechanics seeking reliable replacement parts that won't leave customers stranded with malfunctioning windows or door locks. These hard-to-find components can save you hundreds compared to dealership prices while delivering the same quality and fitment you'd expect from Ford. Whether you're doing a complete restoration or simply need to replace failing vacuum lines, these manifolds will get your Mustang's convenience features working like new again. Don't let small vacuum leaks turn into expensive repair bills - grab these essential components while they're available!