This brand-new multi-circuit protection valve with part numbers AE4528, 1607416 and 1612054 is a key chassis pneumatic part. It stably controls and protects each air brake circuit, ensuring driving safety under various conditions. Adopting high-precision internal components and anti-corrosion housing, it features airtight performance and long service life. Made to OEM standards, it is easy to install and ideal for replacing faulty original valves.