This par Fits for the Following Vehicles: 2001-2011 Crown Victoria V8 281 4.6L ; 2002 Explorer V8 281 4.6L; 1999-2004 Mus tang V8 281 4.6L; 2001-2011 Mercury Grand Marquis V8 281 4.6L; 2002 Mercury Mountaineer V8 281 4.6L; 2001-2011 Lincoln Town Car V8 281 4.6L. Customers can find the product you need accurately according to the OE number. Replacement Part Number: 1W7Z9424AB; 3W7Z9424AA; 3W7Z9424AD; 3W7Z9424AE; 6W7Z9424AA; 9W7Z9424A; 615-175; 1L2Z9424FA; 329-01780; 615175; 1W7Z 9424-AB; 3W7Z 9424-AA; 3W7Z 9424-AD; 3W7Z 9424-AE. Intake Manifold is part of your car's engine whose function is to equally distribute the fuel-air mixture to each of the cylinders. Your vehicle needs the right amount of fuel-air mixture at the right time to reach its full efficiency. It is usually bolted to the engine block. They have a series of hollow channels or ports that are fitted to line up with the heads of the engine's cylinders. Intake manifold receives the air-fuel mixture from the carburetor or fuel-injection system and releases it into the cylinder during its intake stroke. A leak in the intake manifold can have adverse effects on your car's engine. A leaking manifold will result in the manifold sucking in extra air from outside through the leak. This will cause more air to enter intake ports and disrupt the air-fuel ratio in the cylinders. This reduces the engine's efficiency. If you find that your vehicle responds sluggishly to the throttle or has a rough idle, it is a possible indication of a leaky intake manifold. You should find a replacement for the faulty manifold at the earliest to prevent any further detriment to your car's engine. Please rest assured to buy our products, we will give you a satisfactory shopping experience.