Engine expires on No. 4, which was leading at the time
RELATED: Full race results | Updated series standings
LONG POND, Pa. -- The engine on Kevin Harvick's No. 4 Stewart-Haas Racing Chevrolet expired while leading Sunday's Windows 10 400 at Pocono Raceway.
Harvick, who started on the front row alongside pole-winner Kyle Busch, stayed out under the competition caution from Laps 17-19 and led the field to green on Lap 20 when he noticed a problem with his power plant.
"Coming off of Turn 2, I knew I had some issues and didn't realize they were going to be that big, but all in all, just really proud of my team," Harvick said. "Car was fast. You'll have days like this."
The reigning NASCAR Sprint Cup Series champion is winless at Pocono, one of only five tracks on the circuit where he hasn't gone to Victory Lane. He's also without a win at Dover, Kentucky, Sonoma and Texas.
Sitting atop the points standings with two wins on the season, Harvick clinched a Chase berth three races ago at Kentucky Speedway in his attempt to defend his title this fall.
Hendrick Motorsports supplies engines to SHR, and Harvick was asked whether his team was working on something special for the Chase.
"I have no idea," Harvick said. "That would be a great question for the engine shop, but I don't think that's the case."
The 42nd-place finish was Harvick's worst since last spring at Texas.