STP is a long-time supporter of Richard Petty and the No. 43 and will also serve as the title sponsor for the Nationwide Series event this weekend.
Annett has six career starts at Chicago, accumulating one Top-5 and three Top-10 finishes with an average starting position of 17.7 and an average finish of 11.3.
"I'm really looking forward to this weekend in Chicago,” said Annett. “Not only do we have STP on the car, but we're qualified for a chance to win the Dash 4 Cash bonus. It felt really good to get our first Top-5 of the season out of the way last week, and we're definitely ready for more. We had two good runs at this track last year and I can't wait to see how we can build on that this year.
"To me, it's really cool that we'll have STP on the car this weekend. I think when everyone thinks of Richard Petty they think of STP and vice versa, so it's definitely an honor to drive the No. 43 with the STP logo on it. You have a lot of surreal moments working for Richard Petty, and I think this is definitely one of them."
His fifth-place finish at New Hampshire Motor Speedway last weekend was Annett's seventh career Top-5 in the Nationwide Series and earned him eligibility for the Dash 4 Cash program in Sunday’s STP 300. Annett qualified for the Dash 4 Cash program at this race last year and followed up with a strong performance at Indianapolis Motor Speedway where he won the $100,000 bonus for being the highest finishing regular NNS driver. He hopes for a repeat performance as the top finishing NNS driver at Chicago.