For your body fillers to properly adhere and protect your vehicle from future damage, you need a quality body filler hardener to mix with it. Add these hardeners in the correct ratio to auto body fillers, glazes, and putties during the repair process to ensure you get the hardness and longevity you’re looking for. Our collection of hardeners help your filler set up quickly so you can get to sanding and optimize turnaround time on your repair job. These products can also help maximize the quality of your results and have your car looking brand new. Check out the body filler hardeners we have in stock today to find the perfect complement for your body filler product.