To provide an exterior member component having excellent adhesiveness, durability and heat resistance, and capable of constituting a three-layer structure of member/tape/member and enhancing the productivity.

In the exterior member component for automobiles, acrylic adhesive composition is obtained by performing photo polymerization of the polymerizing composition containing acrylic-based monomer component (a) mainly consisting of acrylic-based monomer consisting of alkyl (meta) acrylate with the carbon number of alkyl being 2-14 and polar group containing vinyl monomer, olefin-based polymer (b) having polymerizing unsaturated double bond on an end, hydrogenerated petroleum resin (c) and photo-polymerization initiator (d). The exterior member for the automobile is joined by an acrylic-based adhesive tape with an adhesive layer formed of the acrylic-based adhesive composition with the gel molar fraction being 40-70%.