10 bestAuto Body Fillerof June 2025
112M consumers helped this year.
1
Bondo Glass Reinforced Filler, 00272, 1 Quart
3M
9.8
2
3M Bondo Glazing and Spot Putty, 4.5 oz, Fills Pinholes, Scratches, Minor Dings & Hairline Cracks, Can Be Used on Metal, Fiberglass, Wood and more, Fast Drying, Sandable in 30 Minutes (907C)
3M
9.6
3
3M Bondo 312 Autobody Filler Kit Quart Can
bondo
9.4
4
Fibreglass Evercoat 446 Spot-Lite Premium Lightweight Polyester Finishing and Spot Putty - 30 oz. Pumptainer
Evercoat
9.1
5% off
5
3M 01131 Platinum Plus Filler - 102 oz
3M
8.8
OtherUp to 9% off
Rust-Oleum Automotive 260510 12-Ounce 2 in 1 Filler and Sandable Primer Spray, Gray
Evercoat 120 Rage Xtreme High Performance Premium Lightweight Body Filler - Gallon
Evercoat 282 Z-Grip Non-Clog Lightweight Filler - Gallon
U-Pol P38 Easy Sanding Body Filler 250Ml Tin
6
3M Lightweight Body Filler, 05801, 1 gal , White
3M
8.5
7
Evercoat 156 Light Weight Body Filler - Gallon
Evercoat
8.2
8
Bondo Body Filler, 1.87lb, (262C)
Bondo
7.9
9
Evercoat 112 Rage Gold Premium Lightweight Body Filler - Gallon
Evercoat
7.6
22% off
10
Evercoat 125 Rage Ultra Body Filler - 0.8 Gallon
Evercoat
7.3
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A Guide to Selecting the Best Auto Body Filler
Choosing the right auto body filler is important for achieving a smooth, durable repair on your vehicle. Whether you're fixing a small dent or preparing a larger area for painting, understanding the key features of body fillers will help you get the best results. The right filler will be easy to work with, adhere well to your car's surface, and provide a finish that lasts. By learning about the main specifications, you can match the product to your project and skill level, ensuring a successful repair.
Type of Filler
Auto body fillers come in several types, such as standard polyester, lightweight, fiberglass-reinforced, and specialty fillers. This specification refers to the main material and its intended use. Standard polyester fillers are versatile and suitable for most small to medium repairs, while lightweight fillers are easier to sand and shape, making them ideal for finishing work. Fiberglass-reinforced fillers are stronger and better for larger holes or areas that need extra support. Specialty fillers may be designed for specific surfaces or conditions. To choose the right type, consider the size and location of your repair—smaller dents can use standard or lightweight fillers, while larger or structural repairs may need reinforced options.
Cure Time
Cure time is the amount of time it takes for the filler to harden and be ready for sanding or painting. This is important because it affects how quickly you can move through the repair process. Fillers with a fast cure time (often 15-30 minutes) are good for quick jobs or when you want to finish the repair in one session, but they may be harder to work with if you need more time to shape the material. Slower-curing fillers give you more working time, which is helpful for beginners or complex repairs. Think about your experience level and how much time you want to spend on the repair when choosing a cure time.
Sandability
Sandability refers to how easy it is to sand the filler smooth after it has cured. This is important for achieving a seamless finish that blends with the rest of the car's surface. Some fillers are designed to be very easy to sand, which is great for final finishing and for those new to bodywork. Others may be tougher and require more effort, but can be more durable. If you want a smooth finish with less effort, look for fillers labeled as easy to sand. If durability is more important, you may accept a bit more work during sanding.
Adhesion
Adhesion describes how well the filler sticks to the surface of your car, whether it's bare metal, painted surfaces, or plastic. Good adhesion is crucial for a long-lasting repair that won't crack or peel. Some fillers are formulated to bond better with certain materials, so it's important to check what surfaces the filler is designed for. If you're working on bare metal, make sure the filler is rated for that use. For repairs on plastic or fiberglass, choose a filler that specifically mentions compatibility with those materials.
Shrinkage
Shrinkage is the amount the filler contracts as it cures. High shrinkage can lead to cracks or visible lines after painting, which means more work to fix. Low-shrinkage fillers maintain their shape and size better, resulting in a smoother, more professional finish. If you want to minimize the risk of having to redo your work, look for fillers that advertise low shrinkage, especially for larger repairs or areas that will be highly visible.
Mixing Ratio
Most auto body fillers require mixing with a hardener before use. The mixing ratio tells you how much hardener to add to the filler. This is important because the right ratio ensures proper curing and performance. Some fillers have a simple, easy-to-measure ratio, while others may require more precise mixing. If you're new to bodywork, a filler with a straightforward mixing process can help you avoid mistakes and get consistent results.
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