A replacement spring for pumps and unloaders from AR North America. Designed for Gymatic 3/B+ID, Gymatic 3/8+IDR, VR 3/B+ID, Gymatic 3/8+IDR, VR 3/B+ID, VRC-BM, XM and RK pumps, XT, XM and RC pumps, and XM, RK, and RR pumps. This OEM part ensures a proper fit and material compatibility when used with the recommended products.