The JCB 400J9700 is a genuine OEM adjusting bolt designed for precise adjustments within JCB Dieselmax engines. This critical component ensures optimal performance and fitment across a wide range of JCB agricultural and construction equipment, including Backhoe Loaders (3CX, 4CX, 5CX), Loadalls (531-70, 535-95, 540-140, 540-170), Excavators (JS130, JS160, JS200), Fastrac tractors, Wheel Loaders, and Telehandlers. Manufactured to JCB's rigorous standards, it guarantees durability and compatibility for essential engine adjustments.