The JCB 400J9704 is a genuine OEM adjusting block designed for various JCB backhoe loaders, including the 3CX, 4CX, and 5CX models. This critical component ensures precise adjustments within the machine's systems, contributing to optimal performance and longevity. Manufactured to JCB's high-quality standards, this adjusting block provides reliable fitment and durability for demanding agricultural and construction applications.