The invention concerns a cam follower (1), comprising: a tappet (10) which includes two flanges (21, 22) provided with opposite holes (23, 24) centered on a transverse axis (X1); a pin (30) extending along the transverse axis (X1) between two opposite ends (33, 34) received in the opposite holes (23, 24); and a roller (40) movable in rotation relative to the pin (30) around the transverse axis (X1) and adapted to roll on a cam. According to the invention, each of the opposite holes (23, 24) is provided with: an open portion (231, 241) for mounting the pin (30) by translation in a first direction (D1) perpendicular to the transverse axis (X1), a cylindrical portion (233, 243) for supporting the pin (30) along the first direction (D1) and a plane portion (235, 245) for retaining the pin (30) along the transverse axis (X1) during transport and mounting of the cam follower (1). The invention also concerns a method for manufacturing such a cam follower (1).