TK10050 Brand New Timing Chain Kit for 98-01 Nissan Altima 2.4L DOHC KA24DE Engine 98-04 Frontier / 01-04 Xterra Meets or exceeds OEM standard quality and performance requirements. This kit fits 1998-04 Nissan 2.4L DOHC 16V KA24DE (Please see product description below) This Kit includes : 1 Timing Chain upper (cam chain single row) 1 Timing Chain lower (crank to idler - 92 link) 1 Tensioner upper (for upper - cam chain) 1 Tensioner lower (for lower chain) 1 Guide Rail lower (left side straight) 1 Guide Rail lower (right tensioning rail) 2 Cam Sprockets (cam sprocket - 2 req) 1 Crank Sprocket (18 teeth) 1 Idler Sprocket (36 & 19 teeth sprocket) 2 Bolts with Washers 1 Front Oil Seal 1 Oil Pump Gasket 5 O-rings