Preheat oven to 325°. Combine preserves, vinegar, pepper and salt. Place turkey breast on a rack in a large shallow roasting pan., Bake, uncovered, 1-1/2 to 2 hours or until a thermometer reads 170°, basting every 30 minutes with apricot mixture. (Cover loosely with foil if turkey browns too quickly.) Cover and let stand 15 minutes before slicing.