PRODUCT REPLACEMENT:Engine Timing Chain Kit, also known as Timing Kit.Its function is to actuate the engine's valve mechanism, so that the engine's inlet and outlet valves open or close at the right time, thus ensuring the normal inlet and outlet of the engine cylinders.When you notice a rattling sound from the front of your engine,or a noisy timing chain,then you need to replace your engine timing kit. COMPATIBLE:This Timing Chain Kit fits For Nissan Altima Sedan 1998 1999 2000 2001,For Nissan Frontier Crew Cab Pickup 2004,For Nissan Frontier Extended Cab Pickup 1998 1999 2000 2001 2002 2003 2004,For Nissan Frontier Standard Cab Pickup 1998 1999 2000 2001,For Nissan Xterra Sport Utility 2001 2002 2003 2004. PACKAGE DETAILS:1x Timing Chain upper (cam chain single row),1x Timing Chain lower (crank to idler - 92 link),1x Tensioner upper (for upper - cam chain),1x Tensioner lower (for lower chain),1x Guide Rail lower (left side straight),1x Guide Rail lower (right tensioning rail),2x Cam Sprockets,1x Crank Sprockett (18 teeth),1x Idler Sprocket (36 & 19 teeth sprocket).
