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Titan 315-555A Pump Assembly (Leather) is an OEM replacement pump designed for Hydra M4000 and M2000 sprayers, replacing part 315-555.
It serves as the complete fluid pump assembly responsible for drawing, pressurizing, and delivering coating material through the sprayer. The assembly includes all major internal components such as the displacement rod, pump block, cylinder, packing sets, springs, seals, O-rings, valve components, connecting rods, and mounting hardware.
When the original pump becomes worn or damaged, it can lead to pressure loss, inconsistent spray output, or reduced performance. Replacing the full assembly restores proper pumping function, stable pressure, and reliable operation.