The result leaves Arsenal fifth in the table after their third win in four games, two points behind leaders Manchester City.
The result leaves Arsenal fifth in the table after their third win in four games, two points behind leaders Manchester City, while United are 11th in the table.Earlier, Arsenal shot out of the blocks, pinning United back in the warm September sunshine.
The England forward, largely anonymous in the early stages, cut inside and past two defenders before unleashing a shot past the despairing dive of Aaron Ramsdale. Arsenal were the quicker to settle after the break and were awarded a penalty just before the hour mark when Havertz tumbled in the box after being sandwiched between Aaron Wan-Bissaka and Casemiro but referee Anthony Taylor overturned his decision following a VAR check.