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The Motorcraft SW-6578 is an internal starter clutch switch built to Ford factory specifications for Ford, Lincoln and Mercury vehicles. It is the only starter clutch switch Ford recommends for its vehicles and is backed by a 2-year, unlimited-mileage warranty with limited labor coverage. It suits owners of compatible Ford models who want original-equipment fit and reliability. Compared with generic aftermarket switches, it offers guaranteed compatibility and dealer-supported warranty, though it costs more and fits only listed applications.
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The Motorcraft Starter Clutch Internal Switch SW-6578 is a replacement clutch switch for Ford, Lincoln and Mercury vehicles. It is designed to Ford Motor Company factory specifications for fit, finish and application. Ford Motor Company recommends it as the starter clutch internal switch for these vehicles.
It is made from first-quality materials for durability over repeated use, including in extreme conditions. The design is engineered to provide original equipment performance and reliability. It was tested in the lab and in real-world conditions to meet Ford engineering standards. It includes any innovations or improvements developed since the vehicle was manufactured.
The Motorcraft Service Parts Warranty covers it for 2 years with unlimited mileage, limited labor cost and no commercial exceptions. Ford/Lincoln dealers and Ford Authorized Distributors support the warranty nationwide.
