Van Dyke had missed a would-be winning 3-pointer in early January at Arizona, but he took a pass fromSedrick Barefield and buried this one.
Sophomore guard Jalen Hands led UCLA with 27 points and seven assists. Timmy Allen scored 22 points, Barefield added 19, Riley Battin had a season-high 18 and Van Dyke scored all of his 15 points in the second half.
Utah (13-10, 7-4 Pac-12) started the day in a four-way tie for second place in the conference. UCLA is 12-12, 6-6.