Brand New TK10060 (164 LINKS) Timing Chain Seal Kit QR25DE Engine for 02-06 Nissan Altima Sentra 2.5L Brand New Aftermarket Products : Meets or exceeds OEM standard quality and performance requirements. Fits : 2002-06 Nissan 2.5L 2500CC L4 DOHC (16-Valve), QR25DE Includes : 1 Timing Chain upper (cam chain 164 links) 1 Timing Balance Shaft Lower Chain (70 links) 1 Crankshaft Sprocket (crank gear / 22 teeth, 48 teeth) 1 Exhaust Camshaft Sprocket (cam gear / 44 teeth) 1 Upper Tensioner 1 Balance Shaft Lower Tensioner 1 Upper Guide (short clip on rail; Rail-Top) 1 Guide Rail (Left) 1 Guide Rail (Right) Seals CONFIRM THIS PART FITS YOUR VEHICLE BEFORE PURCHASING (Check Fitment Data Above)