Santosh Auto-Part is a quality-driven manufacturing company certified with ISO 9001:2015 and IATF 16949:2016. We specialize in the manufacturing and export of engine cylinder liners and sleeves for OEM and aftermarket applications worldwide. Our strength lies in a skilled workforce of 350+ professionals and a strong quality control system that ensures reliable performance and long service life of every product.

Backed by over four decades of industry experience, our management brings deep technical knowledge in the production of liners, sleeves, engine blocks, and other critical automotive components. Our manufacturing facilities are based in Rajkot, Gujarat, India — a well-known hub for automotive engineering excellence.