In 1967, with the foundation of the enterprise, Holger Diederichs started the sale of spare-parts. To this day selling spare-parts is still the core activity of Diederichs. By 55 years of excperience in the fields of spare-parts & lightning and a careful selection of the suppliers we make possible the sale of high-quality spare-parts comparable to original parts.

In 2003, Jan-Christian Diederichs began with the development of the make „Diederichs Tuning & Refining“. In the meantime Diederichs has got the greatest tuning sortiment in Europe. Our products, as a rule, are controlled by TUV or as far as they can be used as spare-parts.

In 2016 , our youngest make of Diederichs-Climate went to the market. With this we cover the full range of all the current cooling and climate products. It is the higth product quality that is given priority. We exclusively cooperate with suppliers, who we know and who we trust. All the parts are developed in cooperation with the suppliers and thus are consatantly optimized