Best Performance Engine Main Bolts & Studs of 2026

The ARP Pro Series Flexplate Bolt Kit is designed for Gen II/LS Series Small Block Chevrolet engines. The kit includes bolts with M11 x 1.5 thread size and a 3/4 inch wrenching. The product belongs to the Engine Main Bolts & Studs category.

The ARP 2342503 Stud Kit is designed to keep your engine's balancer locked into position. This kit is vehicle-specific, ensuring a perfect fit for your engine. With a package weight of 0.454 kilograms, this kit is lightweight and easy to install. As part of the Engine Main Bolts & Studs category, it is an essential component for maintaining the integrity of your engine.

The ARP Stud Kit is specifically designed for the SB Chevy LS1, making it an ideal choice for enhancing your engine's performance. Weighing just 4.15 pounds, this cast iron main stud kit provides a reliable fit tailored to your vehicle. With the part number 2345608, you can easily identify the right components for your engine. Using this kit can improve the strength and durability of your engine assembly, giving you peace of mind during high-performance driving. Upgrade your engine with this quality product for better performance and reliability.

The ARP 3/8-16 Stainless Bolts are designed with a 3/8" diameter and a standard 16-thread pitch, making them compatible with many engine applications. Their 1.250-inch under-head length ensures a secure fit, giving you confidence in your assembly. Rated at an impressive 170,000 PSI, these bolts offer strength well beyond typical Grade 8 hardware, so you get durable and reliable performance. Made from polished Stainless 300 steel, a special alloy that resists rust and corrosion, these bolts help maintain your engine’s integrity over time. Plus, their compact 12-point head design makes tightening easier, offering convenience during installation.

This ARP Carburetor Stud Kit (part number 2002402) is vehicle specific and weighs 0.134 kilograms. It falls under the category of Engine Main Bolts & Studs.

The ARP Black Oxide Fastener Kit offers you 12 different groups of fasteners, covering nearly everything needed to build a high-quality carbureted engine. Each set is carefully organized and clearly labeled in vacuum-sealed packages, making it easy for you to find exactly what you need without hassle. These fasteners are made from heat-treated 8740 chrome moly steel with a black oxide coating, providing durability and resistance to wear. Plus, the traditional hex heads and included premium washers give you a reliable fit and added convenience during assembly.

The ARP Stud Kit offers a durable black oxide coating that helps protect against rust and corrosion, ensuring long-lasting performance. This kit is designed specifically to fit certain vehicle models, giving you a perfect match without the hassle of modifications. With a package weight of about 5.7 kilograms, it’s sturdy and substantial, indicating high-quality materials. The part number 2504202 makes it easy to identify and order the exact kit you need. Overall, the ARP Stud Kit is a reliable choice for anyone looking to upgrade or replace engine main bolts and studs with a focus on fit and durability.

This 12-point balancer bolt kit is designed for GM LS7 engines. It comes with a package dimension of 10 x 1.75 x 6 inches and weighs 1.05 pounds. The product is made in the United States and has a part number of 234-2504. This kit belongs to the category of Engine Main Bolts & Studs.

The ARP Stud Kit offers a variety of socket sizes, including 3/8 and 9/16 12-point sockets, plus 1/8 and 3/16 Allen keys. This range means you have the right tool for different bolt heads, making your work easier and more efficient. Designed to fit specific vehicles, the kit ensures compatibility and a perfect fit, saving you time and hassle. Weighing 5.2 pounds, the kit is sturdy yet manageable, giving you a solid feel without being too heavy. With the ARP Stud Kit, you get a versatile and vehicle-specific toolset that helps you handle engine main bolts and studs with confidence.

The ARP Chevy Balancer Bolt is designed specifically for small block Chevy engines, ensuring a perfect fit for your vehicle. This bolt helps secure the harmonic balancer, which is crucial for reducing engine vibrations and protecting your engine components. Weighing just 0.75 pounds, it is lightweight yet durable, making installation easier and more convenient for you. With the trusted ARP brand behind it, you can expect reliable performance and high-quality materials that enhance your engine’s longevity and stability.