An internal combustion engine system, comprising: a cylinder block; a cylinder head attached to the cylinder block, the cylinder head including: a lateral surface including a plurality of fasteners positioned along a bottom edge of the lateral surface; and a plurality of coolant passages; an exhaust gas recirculation cooler; and a coolant collector bracket configured to vertically support the EGR cooler, the coolant collector bracket horizontally coupled to the cylinder head and perpendicularly coupled to the EGR cooler, the coolant collector bracket including: a plurality of mounting legs directly coupled to the lateral surface of the cylinder head, the plurality of mounting legs including a plurality of slots, wherein the plurality of mounting legs are slidably inserted onto the plurality of fasteners of the cylinder head via the plurality of slots, wherein the lateral surface includes a plurality of bracket connection openings, and wherein the plurality of mounting legs include a plurality of fasteners that correspond with the plurality of bracket connection openings; characterised in that the plurality of mounting legs of the coolant collector bracket include a plurality of coolant inlets. a cylinder block; a cylinder head attached to the cylinder block, the cylinder head including: a lateral surface including a plurality of fasteners positioned along a bottom edge of the lateral surface; and a plurality of coolant passages; an exhaust gas recirculation cooler; and a coolant collector bracket configured to vertically support the EGR cooler, the coolant collector bracket horizontally coupled to the cylinder head and perpendicularly coupled to the EGR cooler, the coolant collector bracket including: a plurality of mounting legs directly coupled to the lateral surface of the cylinder head, the plurality of mounting legs including a plurality of slots, wherein the plurality of mounting legs are slidably inserted onto the plurality of fasteners of the cylinder head via the plurality of slots, wherein the lateral surface includes a plurality of bracket connection openings, and wherein the plurality of mounting legs include a plurality of fasteners that correspond with the plurality of bracket connection openings; characterised in that the plurality of mounting legs of the coolant collector bracket include a plurality of coolant inlets. a lateral surface including a plurality of fasteners positioned along a bottom edge of the lateral surface; and a plurality of coolant passages; an exhaust gas recirculation cooler; and a coolant collector bracket configured to vertically support the EGR cooler, the coolant collector bracket horizontally coupled to the cylinder head and perpendicularly coupled to the EGR cooler, the coolant collector bracket including: a plurality of mounting legs directly coupled to the lateral surface of the cylinder head, the plurality of mounting legs including a plurality of slots, wherein the plurality of mounting legs are slidably inserted onto the plurality of fasteners of the cylinder head via the plurality of slots, wherein the lateral surface includes a plurality of bracket connection openings, and wherein the plurality of mounting legs include a plurality of fasteners that correspond with the plurality of bracket connection openings; characterised in that the plurality of mounting legs of the coolant collector bracket include a plurality of coolant inlets. a plurality of mounting legs directly coupled to the lateral surface of the cylinder head, the plurality of mounting legs including a plurality of slots, wherein the plurality of mounting legs are slidably inserted onto the plurality of fasteners of the cylinder head via the plurality of slots, wherein the lateral surface includes a plurality of bracket connection openings, and wherein the plurality of mounting legs include a plurality of fasteners that correspond with the plurality of bracket connection openings; characterised in that the plurality of mounting legs of the coolant collector bracket include a plurality of coolant inlets.