Scarlets loose-head prop Phil John and new coach Wayne Pivac are to take responsibility for the region's scrum.
It follows the departure of technical scrum coach Danny Wilson, who has left the region to concentrate on his new role at Bristol.
Wilson, who is now forwards coach at the English Championship club, had been working part-time at the Welsh region.
"We mutually agreed that Danny would concentrate wholeheartedly on his commitments with Bristol," said Pivac.
"Danny did a lot of work here over the last two seasons laying the foundations for improved forward and set-piece play.
"During that time Danny worked closely with Phil [John] to ensure a longer-term succession plan for the region, whilst helping Phil to develop as a young coach.
"We fully appreciate the work that Danny has done with the Scarlets over that period."
Wilson has previously held head coach positions at London Welsh and Wales Under-20s, as well as working as forwards coach at Newport Gwent Dragons.
He said he "enjoyed" his time in west Wales and believes John, 33, is the right man to take on his former post.
"I've been fortunate enough to work with a fantastic group of players at the Scarlets and be a part of a region that has a very passionate support," said Wilson.
"Phil has been a huge part of the region's scrum development up until now and I believe he's the right person to take on the role, alongside Wayne, and he will go on to make a very good scrum coach in the future."
Scarlets are away to Leinster in the Guinness Pro12 on Saturday, 13 September.