About Us

For almost 40 years our company has been a leading Northern Ireland supplier of diesel engines and parts - new and re-manufactured.

Shawson Supply Ltd was established in 1973 by the late Mr John Mahon assisted by his father, the late Mr John Mahon, Sen., who provided an engineering consultancy service to the business during the early years.

The development of the business has also been greatly assisted by the present owner of Damian Mahon, son of the present owner.

Our business success has been achieved through a dedicated focus on customer service. We are currently in the process of obtaining ISO9001 Quality Standard. Other success factors include:

• Efficient and expert purchasing processes developed over many years.
• Rigorous pre- and post-purchase product inspection and quality control.
• Identifying and maintaining a network of diesel users and providing them with reliable and exceptional value products.
• Honouring delivery promises and providing our own careful delivery service throughout Ireland.
• Provision of appropriate warranties, as required.

We are situated in the heart of County Down, Northern Ireland, near Belfast and close to motorways, ports and airports.