In this study, the Cold Gas Dynamic Spraying process, or Cold Spray, was used to produce coatings of high-temperature resistant Al-alloy, to be used for performance enhancement of internal combustion engines. The Cold Spray process was selected due to its relatively low operating temperature, thus preventing significant heating of the particles during spraying and therefore enabling the original microstructure of the feedstock powder to be preserved. The metastable phases in the Al-Fe-V-Si alloy were produced by Rapid Solidification through means of gas atomization. Aging of the Cold Spray coating samples was performed to determine the thermal stability of the metastable phases. Chemical and mechanical properties of the Al-alloy are examined in both the feedstock powder and the resulting coatings.  The microstructure of the Cold Spray coatings and phase transformations during the aging process are investigated by means of SEM, XRD and TEM analyses.