The Hammers began the day within the backside three however moved above the dotted line on purpose distinction after being annoyed on the London Stadium.
A degree leaves West Ham within the thick of a relegation battle and retains the highlight on David Moyes, who will see this as a possibility missed.
West Ham fell behind after 17 minutes when Alex Moreno whipped in a cross from the left and Ollie Watkins capitalised on some slack marking to move previous Alphonse Areola.
The Hammers equalised on 26 minutes when Lucas Paqueta went over below problem from Leon Bailey and Mentioned Benrahma thumped a penalty previous Emiliano Martinez.
West Ham had probabilities to win the sport within the second half however Benrahma and substitute Pablo Fornals each fluffed their strains and the house aspect needed to accept a degree.