The JCB 400S8674 Grease Tensioner RH is a genuine OEM component designed for the right-hand side of JCB machinery undercarriages. This critical part maintains correct track tension, which is essential for optimal machine operation, reduced wear on track components, and improved stability. Manufactured to JCB's rigorous standards, it ensures durability and reliable performance in demanding environments. Proper functioning of the grease tensioner helps prevent track derailment and extends the lifespan of the undercarriage system.