The Coyotes won their fourth straight game. After scoring two third-period goals, they have at least one in 10 consecutive games and 18 overall in the final period.
Louis Domingue made 25 saves for his fourth straight win. Ekman-Larrson assisted on all three goals that accounted for Domi’s first NHL hat trick.
Arizona forced overtime with two third-period goals by Domi, both on the power play. Domi hadn’t scored since Dec. 4 when he had two goals at Buffalo.
The Coyotes have five hat tricks this season to lead the NHL.
Arizona's power play was 3 for 4 and almost had another score, but Domi's first goal, in the second period, came just as the Oilers returned to full strength.
Leon Draisaitl and Jordan Schultz each had a goal and an assist for the Oilers, who lost their third straight game and have dropped six of eight. Jordan Eberle added three assists and has seven points in five games.
Edmonton took a 1-0 lead into the first intermission on Draisaitl's goal at 18:43. Schultz made it 2-0 after he took Eberle's pass through traffic on the power play and scored at 6:13 of the second period.
Domi made it 2-1, but Benoit Pouliot redirected Schultz's shot past Domingue only 1:02 into the third period for a 3-1 Oilers lead.
The Coyotes rallied with Domi scoring twice in 3:01, both on power plays. His third goal drew a smattering of caps from the stands.
Arizona looked drained when the game went to 3-on-3 in overtime and the Oilers saw a shot roll through the crease just in front of the net, their best chance to win in the extra 5 minutes. Ekman-Larrson's wrister eluded Anders Nilsson to win it.
Nilsson finished with 27 saves.
NOTES: Dave Tippett of the Coyotes coached in his 500th career game. ... Luke Gadzic and Matt Hendricks were out of Edmonton lineup. Hendricks began serving a three-game suspension for boarding. ... Steve Downie, John Scott and Stefan Elliott were scratched for Arizona.