This research was performed with Pinus oocarpa Schiede ex Schltdl. Var. Ochoterenai of Forest Plantation of Colombia, specie that have presented some important troubles that have limited its use, due to its dimensional instability and low mechanical resistance. Polymer impregnation treatments have reduced deformation and improved physical and mechanical properties of the wood. The aim of this research was evaluated the effect of polyethylene glycol impregnation with molecular weight 600 and 1500, polyvinyl alcohol and zeolite addition, on density, dimensional stability, static flexion and compression parallel to Grain. The samples were impregnated in hot bath at 95 degrees C for 8 hours, and then impregnated at room temperature for 16 hours. The assessment of the wood was carried out under the Colombian Technical Standards NTC 290, 663, 784 and other standards. The best results were obtained with the impregnation of polyethylene glycol 1500 where the density increased between 21 % and 24 %; the anti-swelling efficiency was 60 %; in static flexion the modulus rupture increased 20 %, modulus of elasticity 39 % and compression parallel to grain increased 8 %. Treatment with polyethylene glycol 600 provided lower anti-swelling efficiency (14%), and lower improvement in density (8%), and i n mechanical properties (1% to 7%). Impregnation with polymers evidenced wood with greater dimensional stability and better physical and mechanical properties.