•The easiest and most convenient way to finish your LS engine and get it ready to run in your vehicle is with one of our serpentine accessory drive systems. They include the accessories, brackets, drive belts and hardware your engine needs, saving you the time of sourcing them individually. Our kits include an alternator, power steering pump, pulleys, idlers and even an air conditioning compressor. They’re all-inclusive systems that bolt right on to the engine for a factory fit and appearance.