Features Modern LED replacements compatible with Ford Mustang 2010-2014 factory sidemarkers Increased output, with LED styling Plug-and-play installation, no modification needed Includes four sidemarkers, to replace both front and rear OEM-grade retroreflector optics Engineered and assembled in USA Overview Upgraded Styling. If you're looking to give your vehicle an upgrade in styling and appearance, this is the perfect way to do it! These replacement units are loaded with hundreds of LEDs, for a modern and unique appearance. With the full LED array, they illuminate brighter than factory as well! Choose from three lens color options to match your vehicle or preference. OEM Grade. The Diode Dynamics LED sidemarkers use OEM-grade retroreflector optics, which provide required the reflective safety and a clean, premium appearance when off. Compare this to "diffuser" or plain flat lenses, without any reflective features. The units themselves are designed directly from OEM CAD data for a perfect fit, and the connector plugs right into the factory socket. Reliability. Like most Diode Dynamics products, these Sidemarker LEDs compatible with Ford Mustang, are designed with newer constant-current circuitry and transient voltage protection. These features, found in factory-installed lighting components, protect the circuit over time, ensuring years of flicker-free performance.