Browse our range of Grundfos service kits and replacement parts—designed to support maintenance and keep pump systems running reliably. At Pump‑Stop.com, we carry OEM service kits for popular Grundfos series like CR/CRI, SQE, SP, MAGNA, ALPHA, TP, and DDA dosing pumps. Each kit includes authentic components such as mechanical seals, diaphragms, O-rings, gaskets, impellers, connectors, and mounting hardware tailored for each model. These complete kits simplify repairs, reduce the risk of leaks, and restore pump efficiency without guesswork. Ideal for residential, commercial, or industrial applications, our parts help owners, contractors, and technicians minimize downtime and extend equipment life. Not sure which kit fits your model? Our expert team is ready to assist with model matching and installation tips. Enjoy fast U.S. shipping and secure checkout with every order.