Rev9Power Rev9_AC-064; Fiberglass Turbine Blanket For T4 Turbocharger Product Details T4 TURBO BLANKET This will fit : t4 , gt40, gt42 ,gt55, t67, t66? and most t4 turbine housing turbo charger high quality and durability can hold up to 2000 degree F. protect other engine bay parts from heat that create by turbo charger. -made of fiberglass that can hold 2000 degree F. -stainless steel knitted wire mesh inner liner. -stainless steel capstan rivets. -stainless steel lacing wire fastening system. -comes with 2 springs fastener.