Ahly s left back Ali Maloul
They have now 47 points, five ahead of second-placed Future FC who played two matches more.
Ghazl El-Mahalla defender Mostafa El-Esh scored in his own net, while Tunisian fullback Ali Maaloul doubled the lead two minutes before the hour-mark.
Substitute striker Mohamed Sherif completed the rout in injury time.
Despite having an important clash against Pyramids FC in the Egypt Cup final on Monday, Ahly coach Marcel Koller kept his regular starting line-up against Ghazl El-Mahalla.
International keeper Mohmed El-Shenawi was the only regular member to miss the game as the Swiss coach preferred to rest him, giving the chance to substitute keeper Ali Lotfi.
On the other hand, South African forward Percy Tau was benched before being introduced in the 73 rd minute.
Ahly controlled the game from its start but they needed to wait until the 43 rd minute to open the scoring when Ghazl El-Mahalla defender Mostafa El-Esh converted Ali Maaloul cross from a corner into his own net.
The Red Devils were awarded a penalty in the 57 th minute when Mostafa El-Esh touched the ball with his hand inside the area and Maaloul converted the penalty to add the second.
They missed a number of many chances to double the score with Percy Tau squandered two clear chances.
In injury time Mohamed Sherif was on the rebound of Ahmed Kendouci shot that was blocked by the keeper to score easily in an empty net.
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