The unit has been designed to provide a friendly, spacious and welcoming environment to visitors.
Scarlets Commercial Director, Rupert Moon said: "I have been involved with Tenovus since the mid 1990's. I started serving in restaurants to raise money.
"This is a cause which is very close to my heart. We are proud that Tenovus have chosen Parc y Scarlets as a venue to house their Mobile Unit when visiting Llanelli. It is a worthwhile cause and an outstanding vehicle."
From November 24 onwards the unit will be visiting Llanelli every other Tuesday, opening between 10am and 4pm each day. For the first three visits the unit will be loacted at Parc y Scarlets.