Window louvers are those horizontal slats you see a lot in some cars from the 1980s and prior, along with more recent muscle cars like certain Mustangs and Camaros. They're generally either black ...

The governing body believed the two teams had altered their hood louvers on the #31 car driven by Justin Haley, as well as all four cars from Rick Hendrick's organization. The louvers in question ...

He should know; Hot Rods by Dean recently built him a sharp A-bone on Deuce 'rails, and even though many say it's Brian's finest car, one thing prevented it from being his finest hot rod: louvers.

Now that street rods and early '50s customs are so popular, louvers are making a strong comeback. The older cars, with their rounded body styles, look great with the traditional louvers and now ...

Hendrick cars were permitted to use those louvers in practice, with officials taking them after the opening session at the 1-mile track. RELATED: Full practice results There is no penalty to ...

The penalties occurred after NASCAR confiscated the hood louvers from all five cars before Sunday’s race at Phoenix Raceway. The Hendrick teams involved were the No. 5 Chevrolet driven by Kyle ...

It certainly looks cosy enough for a car packing over 1000 hp. The most interesting detail seems to be a collection of active louvers cut into the carbon fiber front fenders. When open ...

Louvers are good and right ... You have a pickup truck, not a sports car. Fight me in the comments, but I see no good coming from this.

"I don't know anything about a race car anyways so I had to ask what a louver was," Hendrick driver Kyle Larson said. "I'm joking a little bit. Yeah, you worry about potential penalties ...