def urea pump A0001407878

This A0001407878 pressure‑relief valve assembly serves as the vital regulating fitting of the truck SCR exhaust‑gas treatment urea pump. It stabilizes internal urea working pressure, prevents excessive system pressure‑build‑up and stops urea liquid crystallization and pump block‑down during long‑haul transportation. Our aftermarket repair kit strictly follows original‑equipment dimensional benchmarks. Every built‑in diaphragm, sealing ring and filter mesh undergoes anti‑crystallization and pressure‑resistant screening. Replacing the worn‑out relief valve helps your AdBlue pump maintain steady urea delivery, cut down SCR‑system breakdown risks and keep heavy‑duty vehicles compliant with Euro‑6 emission requirements. It is an economical replacement spare for routine urea‑pump overhaul.