Today will be the day I find out. The engine came with nothing but a check list for installation. After 20 hours I had the oil changed and mailed the paper work for warranty. Every part that did not come installed on the engine, including hoses were replaced with new Mercruiser parts. Had the outdrive resealed, new bellows and bearing, shift cable, trim and tilt senders, thermo housing and warning sensors replaced. I also had new gauges and shifter,and cables installed, new ignition switch, fuel lines and tank cleaned. I did not spare any expense and wanted trouble free boating for years to come. Look where that got me! The season is over so if they warranty and give me a new engine, it will not be installed till spring. Will keep posted.