3M Rubberized Undercoating Aerosol Spray, 08883, 19.7 oz, Textured Finish, Anti-Corrosive, Multi-Purpose for Automotive Cars, Trucks, and Recreational Vehicles Black

Best under coating spray I have used for sure! 3m is the way to go.

Used on the rear fender wells of a new 2023 Silverado. Easy to apply (mask carefully) and durable.

Worked great. Was able to do both rear fender wells on a 2024 F150 with one can. I did a light coat just to protect the paint before installing plastic fender liners. If you are using this as the only protection for your fender wells I would recommend 1 can per well. Spray nozzle is just right for this task

I use this product on the underside of my street Rod. It left a beautiful appearance.

I bought this product to spray on the inner fender wells of my pickup. I generally have a very good opinion of 3M products plus other reviews on this product were good so I felt confident with this purchase. I must say, it does apply nicely and evenly. It dries quickly enough that a second coat can be applied after about 10-15 minutes and I did add a second coat. It doesn't drip either which is a big plus in my book. The product dries to an even, smooth texture that's a slate gray color. The result looks promising. The only qualifier is that I haven't had the truck in a situation where I would know if the product is durable. Only time will tell on that and that's the only reason I gave it 4 stars. I still have about half the can left and I did give the fender wells a thorough coating so I'm also happy with the price per area ratio. If this product is deficient in any way, I will update the review.

Used this for undercoating a new wheel well for an old truck. Applied a few coats. Nice rubber texture.

Sprayed underneath the truck on all the rusty areas. Also painted my chrome bumpers black with this and it seems to be holding up well.

Works as a great corrosion inhibitor under my Nissan Rogue and under my Nissan Frontier. lf you intend to keep your car long , use this !