The objective of the paper was to analyse and assess the internet market of spare parts for agricultural machines. The research was carried out in the group of the selected servicing centres, which offer sale of spare parts on the web sites. Differences in the assortment of specific on-line shops and the manner of presenting information concerning sale in the Internet was analysed. Assortment offer of on-line shops is varied. Possibility of selling spare parts through the Internet constitutes an asset of an enterprise. On this basis, present directions of development of the web site department and sale of spare parts for farm tractors in Poland were determined.