After a dull first-half Antalyaspor took the lead through Moroccan international winger Ismail Aissati, who scored through a penalty in the 77th minute, after Sancak Kaplan was adjudged to have fouled an opponent in the box.
However a 90th minute goal from Kalu ensured that had a share of the spoils.
Kalu converted a penalty resulting from a foul by Aissati to level the scores, as the Moroccan midfielder turned from hero to vallian.
Kalu was on for the entire duration of the game while Isaac Promise was taken off in 65th minute for Hasan Sismanoglu.
Kalu has now scored six goals in eleven appearances for third placed Kasimpasa and is the second highest goal scorer in the Turkish League.
While his countryman Isaac has scored three goals in eight appearances for table topping Antalyaspor