Need a replacement engine for your Citation 500 or 501SP? Take advantage of special limited-time pricing on premium pre-owned engines. Highlighted in green below, these as-removed mid-time engines will keep your Citation flying for years to come at a fraction of the cost (and time) of overhauling your existing engines. Sierra STCs are available for installation on Citation 500 and 501 models. Download a spec sheet or call us for details.