This paper analyzes the influence of large auto parts manufacturers on the introduction of production organization practices at small supplier companies. Case studies taken in eleven companies, i.e., one large auto parts manufacturer and ten of its suppliers, allow to identify a diffusion pattern. Certain practices are more adopted by the buyers' imposition. On the other hand, other practices are usually adopted by initiative of the own small companies. Small companies suffer other influences from their buyers, which are also used as references, and there is also the influence of other organizations (consulting, managerial associations, qualification and training and financing institutions). Small companies have difficulties to access these institutions, but there are those which make better use of such relations.
small-medium suppliers; buyer-supplier relations; production management
