Part No. 52-1274_KS (oro2u.com)
TOP END GASKET KIT FOR
HONDA CRF450R 2002-2008
Top end direct OEM replacement gasket kit from K&S Technologies includes all gaskets, washer and o-rings for a top end rebuild.

18 piece kit includes:
Cylinder Base Gasket, Cylinder Head Cover Gasket, Cam Chain Tensioner Gasket (02-04) Cam Chain Tensioner Gasket (05+), Valve Stem Seal x2, Valve Stem Seal x2 Exhaust Pipe Gasket, O-Ring Water Pipe (Cylinder Head), Cam Chain O-Ring

Seal Ring (Cylinder Head Cover), Cylinder Head Bolt Rubber Setting x3 Sealing Washer 6mm (Cam Chain), Sealing Washer 6mm (Cam Chain)