3157/3156: GTR Armor (Amber) GMC They are designed to be

They are designed to be drop-in LED lights for truck replacements for halogen lights used in heavy-duty trucks like Peterbilt 579/587 and Kenworth T660 models

the Model 170 is the way to go

If your XB ballasts have stainless steel brackets / tech info on the back

The Model 8900 Evolution 2 5 x7in LED headlights offer a safety solution with improved light output

Designed with a flat back to the housing for a simple panel mounted solution fitting a wide range of applications including semi trucks

3157/3156: GTR Armor (Amber) GMC They are designed to beThe Armor Series of LED bulb: is impressively bright, with an unparalleled Black Chrome style. The white is one of the brightest bulbs we offer, and the other colors are vibrant and impressive. The Armor series look great on and off, so if you're looking for a super bright option that also looks cool, you've found the right option! Using state of the art: 2835 SMD LED chips to produce unparalleled light output with high efficiency power usage! The