The ARP Main Bolt Kit (Product Code 154-5201) is specifically designed to suit SB Ford 4-bolt engines, making it the perfect choice for those looking to upgrade their crankshaft. Crafted by the renowned brand ARP, this kit is known for its high-quality construction and durability.

With socket sizes of 1/2 hex, 9/16 hex, and 11/16 hex, this bolt kit is versatile and compatible with a variety of tools, ensuring ease of use during installation. The ARP Main Bolt Kit is specially engineered to provide a secure and reliable connection, giving you peace of mind when it comes to your engine's performance.

ARP is a trusted manufacturer in the automotive industry, with years of experience and expertise in producing top-notch fasteners for a wide range of applications. With their state-of-the-art facilities in Southern California, ARP is able to maintain the highest standards of quality in their products. Whether you're a professional racer or a DIY enthusiast, the ARP Main Bolt Kit is a must-have for anyone looking to enhance the performance of their vehicle's engine.