This kit is everything needed to install a GM/Delco DR44 alternator on a Volvo 240. It does not include the alternator. DR44 alternators come in various flavors of Amp and voltage regulator, pick the one to support your needs. The bracket solid mounts the alternator to the block and belts are tensioned with an adjustable idler bracket. This keeps the alternator in a stationary position tight to the block and allows for more belt wrap on the crank pulley and alternator pulley. You can add the correct size belts and v belt pulley with the options on the right.