Projection device for a motor vehicle headlight, which projection device comprises - projection optics for imaging a light distribution formed from light emitted by at least one light source, - a aperture element, - a base body, wherein the projection optics and the aperture element are mechanically connected to the base body, wherein the aperture element can be pushed onto the base body along a push-on direction by means of at least two, preferably exactly two guide elements, wherein the guide elements engage in mating guide elements arranged on the base body and corresponding to the guide elements, and wherein the guide elements of the aperture element each have an end stop at a first end and the counter-guide elements of the base body each have a stop, which stops, in combination with the end stops of the guide elements, are designed to limit the displacement of the aperture element in the direction of the push-on direction towards an end position, wherein the projection device comprises at least one clamping device, which comprises a first and a second clamping element (120a, 220a), wherein the first clamping element is arranged on the aperture element and the second clamping element is arranged on the base body, and wherein the first clamping element is arranged to engage on the second clamping element, and wherein the at least one clamping device is arranged to clamp the aperture element in its end position on the base body, characterized in that the projection device comprises a holding element and at least one securing device, which at least one securing device comprises a first and a second securing element (120b, 320b), wherein the first securing element is arranged to engage on the second securing element, and wherein the at least one securing device is arranged securing the at least one clamping device against disengagement of the clamping elements (120a, 220a), wherein the first securing element is arranged on the aperture element and the second securing element is arranged on the holding element, wherein the holding element is fastened to the base body opposite the projection optics along the push-on direction. - projection optics for imaging a light distribution formed from light emitted by at least one light source, - a aperture element, - a base body, wherein the projection optics and the aperture element are mechanically connected to the base body, wherein the aperture element can be pushed onto the base body along a push-on direction by means of at least two, preferably exactly two guide elements, wherein the guide elements engage in mating guide elements arranged on the base body and corresponding to the guide elements, and wherein the guide elements of the aperture element each have an end stop at a first end and the counter-guide elements of the base body each have a stop, which stops, in combination with the end stops of the guide elements, are designed to limit the displacement of the aperture element in the direction of the push-on direction towards an end position, wherein the projection device comprises at least one clamping device, which comprises a first and a second clamping element (120a, 220a), wherein the first clamping element is arranged on the aperture element and the second clamping element is arranged on the base body, and wherein the first clamping element is arranged to engage on the second clamping element, and wherein the at least one clamping device is arranged to clamp the aperture element in its end position on the base body, characterized in that the projection device comprises a holding element and at least one securing device, which at least one securing device comprises a first and a second securing element (120b, 320b), wherein the first securing element is arranged to engage on the second securing element, and wherein the at least one securing device is arranged securing the at least one clamping device against disengagement of the clamping elements (120a, 220a), wherein the first securing element is arranged on the aperture element and the second securing element is arranged on the holding element, wherein the holding element is fastened to the base body opposite the projection optics along the push-on direction.