Brock and Rutgers linebackers coach Dave Cohen were both candidates for the position following K.C. Keeler's removal.
Rutgers coach Kyle Flood will have a new offensive coordinator in his second year as head coach. The change marks the fourth straight season with a new Rutgers play-caller on the offensive side of the ball.
Flood will begin his search for a replacement immediately, with running backs coach Norries Wilson and quarterbacks coach Rob Spence getting in-house looks.
Brock's Rutgers offense ranked 104th in overall production, but produced the first 1,000-yard rusher in four seasons in Jawan Jamison. The 26 sacks allowed in 2012 are down for 61 in 2010 under Kirk Ciarrocca.