We as BÜYÜKDEMİR OTOMOTİV SANAYİ TiCARET A.Ş. are manufacturer and exporter company in Istanbul / TURKEY dealing with spare parts for commercial vehicles (bus, truck and trailer) in 5.000m2 closed area and total 10.000m2 area.
Our company, founded in 1957, serves to the automotive spare part aftermarket with applying the requirements of the Total Quality Management principles.
We are mostly specialized in Air Brake Systems (Standard & Automatic Air Couplings, Diaphragms, Working Cylinders, and Valves), Plug and Socket Connectors and Diesel Fuel Injection Equipment. Our product range consists of more than 1000 spare parts for trucks, trailers and buses.
Today, we export our products to many leading companies in Europe, Middle East and Africa.
We control all our production process with modern, accurate measurament and control devices and with our skilled control staff whom are taking ISO 9001 as a reference.
With our expertise, we always support our customers in terms of material, technique, and design.
Please kindly contact us also for your special orders (Metal Injection, Cold Forging and Aluminium Extrusion Parts) which are not in our catalogue.
If you inform us about any kind of possible business opportunities, we will be happy to cooperate.


Being one of the leader companies in the commercial vehicles spare parts market for with advanced quality product range.


Meeting customer satisfaction at maximum level with high quality production and managing existing resources optimum.

Quality Policy

Focusing on the expectation, requirements and satisfaction of our customers.
Working as a team in every field and paying importance to the quality in everywhere
Improving and developing the system continuously followingISO 9001:2015 Quality Management System requirements.
Using all resources optimum and increasing market share continuously in the target market.
Meeting all customer requests, serving high quality products and best delivery time.