Best Car Bolts of 2025

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Car bolts are an essential component of any vehicle, as they play a crucial role in holding different parts together. These bolts come in various shapes, sizes, and materials, and are designed to withstand extreme pressure and tension. They are commonly used in the engine, suspension, and braking systems of a car, and are made from high-grade steel or titanium to ensure durability and strength. Car bolts are available in different types, including hex bolts, flange bolts, and carriage bolts, each designed for specific applications. Proper installation and maintenance of car bolts are vital to ensure the safety and longevity of a vehicle.
At a Glance: Our Top Picks
Top 10 Car Bolts
Stacool Stainless Steel Skid Plate Bolts
The Stacool Skid Plate Bolts are designed to fit various Toyota models from 2000 to 2021, ensuring compatibility with your vehicle. Made from high-quality stainless steel, these bolts resist wear and deformation, providing long-lasting strength. Their precise threading and sharp screw teeth guarantee a secure fastening, making it easy for you to install and replace old or damaged bolts. With convenient storage options, these bolts come in sets of 4, 8, or 12, allowing you to keep them handy in your vehicle or toolbox whenever you need them.
Speedway Motors 1/4 Inch Body Bolts
The Speedway Body Bolt Set includes ten sturdy bolts designed for mounting body panels, wheel covers, and more. The 7/16-inch hex head features a built-in washer, which helps keep the hardware secure during removal. You’ll appreciate the quick start lug on the bolt tips, making installation easier and minimizing the risk of cross-threading. With a thread length of 7/8 inch, these bolts are versatile enough for various applications. Plus, the black oxide coating offers excellent corrosion resistance, ensuring durability and longevity in your projects.
ARP 6131250 Stainless Steel 3/8-16 12-Point Bolts
Introducing the ARP Stainless Steel Bolts, the perfect choice for your exhaust header needs. These bolts, made from polished Stainless 300 steel, are designed to be rust and corrosion resistant, ensuring their durability and longevity. With a diameter of 3/8" and a standard thread pitch of 16, these bolts provide a secure and reliable fit. Their compact 12-point style heads make them easy to tighten and loosen with a 3/8 wrench. Rated at an impressive 170,000 PSI, these bolts are considerably stronger than Grade 8 hardware, providing you with the utmost confidence in their performance. Packaged in a convenient 5-pack card, these ARP Stainless Steel Bolts are a must-have for any exhaust header project.
ARP Stainless Steel 7/16" Bolts
The ARP 7/16" Stainless Bolts offer exceptional strength and durability for your automotive needs. With a 7/16" diameter and a standard thread pitch of 14, these bolts are designed for reliable performance. Their impressive rating of 170,000 PSI makes them significantly stronger than typical Grade 8 hardware, ensuring they can withstand high-stress applications. Made from polished Stainless 300 steel, these bolts resist rust and corrosion, giving you peace of mind in various environments. The compact 12-point head design allows for better wrenching access, making installation and removal easier for users.
ARP 6110515 Stainless Steel Bolts
The ARP Stainless Steel Bolts are designed for strength and durability, making them a great choice for your automotive needs. With a robust rating of 170,000 PSI, these bolts outperform standard Grade 8 hardware, ensuring reliable performance. The polished Stainless 300 steel construction means you won't have to worry about rust or corrosion, adding to their longevity. Their compact 12-point head design allows for better wrenching, making installation easier and more efficient. Each pack contains five bolts, providing you with enough quantity for your projects.
Dorman 81101 Motor Mount Bolt Kit
The Dorman Motor Mount Bolt Kit is designed to be a perfect replacement for your vehicle's original engine mount bolts. This kit ensures that you have a reliable solution if your current bolts are missing or worn out. Made from high-quality materials, these bolts are built to last, providing dependable performance over time. With over a century of automotive expertise backing this product, you can trust that it meets high standards of quality. To ensure compatibility with your specific vehicle, simply enter your make, model, and trim level into the provided garage tool.
A.A 10-Bolt Ring Gear Bolt Set
The A.A Ring Gear Bolt Set is designed specifically for GM 7.5", 8.25", 8.5", and 8.6" applications, ensuring a perfect fit for your needs. This set includes ten reverse thread bolts, which are essential for securely attaching the ring gear to your differential. Made from Grade 8 hardened steel, these bolts offer superior strength and durability, giving you peace of mind during use. The black oxidized finish not only enhances the bolts' appearance but also provides corrosion resistance, extending their lifespan. With this set, you can confidently tackle your automotive projects, knowing you have reliable and robust components at your disposal.
ARP Starter Bolt Kit
The ARP Starter Bolts are essential auto parts designed to ensure a secure fit for your vehicle's starter. With compact dimensions of 6.0 inches long, 4.0 inches wide, and 3.4 inches high, they are easy to handle and store. Weighing only 0.14 pounds, these bolts are lightweight, making installation simpler for you. Proudly made in the United States, you can trust their quality and durability. By using these bolts, you enhance the reliability of your starter system, ensuring smoother engine starts and improved performance.
Ohleats 4PCS Stainless Steel Skid Plate Bolts
The Ohleats Skid Plate Bolts are designed to enhance the security of your vehicle's front skid plate, hood, and splash guard. With a precise size of 1.03×0.65 inches and an 8 mm thread diameter, these bolts ensure a snug fit for reliable performance. Made from durable 304 stainless steel, they resist rust and corrosion, making them ideal for long-term use. Installation is straightforward; simply replace old bolts with the new ones using a screwdriver, allowing you to easily manage repairs yourself. Available in four or eight-piece packs, they are a practical addition to your toolbox for emergencies.
ARP 6131750 Stainless Steel Bolts
The ARP Stainless Steel Bolts are designed for exceptional strength and durability. With a diameter of 3/8" and a thread pitch of 16, they offer a reliable fit for various applications. Rated at an impressive 170,000 PSI, these bolts surpass Grade 8 hardware, ensuring they can withstand heavy loads. Made from polished Stainless 300 steel, they resist rust and corrosion, making them ideal for outdoor use or in harsh environments. The compact 12-point head design allows for better wrenching access, making installation easier for you.
Frequently Asked Questions (FAQs)
1. What type of bolts are used in cars?
The most common type of bolts used in cars are hex head bolts, followed by hex-headed cap screws and studs. If any of these fasteners become loose, it can cause problems with the vehicle's performance.
2. What size bolts are commonly used on cars?
American manufacturers commonly use bolt sizes of 13mm, 15mm, 18mm, and 19mm on cars. Smaller sizes such as 8mm and 10mm are also used by both Asian and American companies. However, specific manufacturers may have their own size preferences.
3. What are the strongest bolts for cars?
The strongest bolts for cars are the Metric 12.9 grade bolts. These bolts are made of alloy steel, quenched and tempered, and are designed to withstand extreme forces. They have a proof load of over 1100M Pa.
4. Do any cars use SAE bolts?
Most domestic cars nowadays prefer using Metric bolts rather than SAE inch-sized bolts. It's important to recognize the type of bolts used in your car, as it may be a combination of Metric and SAE bolts.
5. Can you use any bolts in a car?
It is important to use the correct type of bolts in a car. Coarse-thread UNC-spec nuts and bolts should not be used on cars, trucks, or motorcycles. Only fine-thread UNF-pattern fasteners should be used, as they provide superior holding power and help prevent loosening.
6. What grade bolts are best for cars?
Grade 10.9 bolts, also known as 'car bolts', are commonly used in the automotive industry. These bolts are made of boron or carbon steel and have a high tensile strength of 1040 MPa.
7. What is the hardest bolt to break?
Steel fasteners used in cars are commonly available in different grades: 2, 5, 8, and 18-8 stainless. Grade 8 is the hardest, Grade 5 is medium, and Grade 2 is the softest. Grade 8 is the most common and least expensive grade of steel fastener.
During our car bolt research, we found 24 car bolt products and shortlisted 10 quality products. We collected and analyzed 3,397 customer reviews through our big data system to write the car bolts list. We found that most customers choose car bolts with an average price of $12.18.
The car bolts are available for purchase. We have researched hundreds of brands and picked the top brands of car bolts, including Stacool, Speedway Motors, ARP, Dorman, A.A. The seller of top 1 product has received honest feedback from 584 consumers with an average rating of 4.9.

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.