Titan 806-032 Plunger (Replaces Titan 551521)

Plunger 806-032 (replaces Titan 551521) for Advantage and Impact

The 806-032 plunger is a precision-machined component that directly replaces the original Titan part number 551521. It is specifically designed for use in the pump assembly of Advantage 400; Advantage 500; and Impact 410 sprayer models. The plunger is the reciprocating element that moves within the pump cylinder to pressurize the fluid. It is typically made from hardened and ground steel or ceramic to provide a smooth, wear-resistant surface that seals effectively against the pump packings. The plunger is driven by the connecting rod and piston rod assembly, and its precise fit within the cylinder is critical for generating and maintaining high pressure. Over time, plungers can become scored, pitted, or worn due to contamination, inadequate lubrication, or normal wear. A damaged plunger will allow fluid to leak past the packings, causing loss of pressure, reduced output, and inefficient operation. Symptoms of a worn plunger include difficulty building pressure, fluid leaking from the pump, and visible scoring on the plunger surface. Replacing a worn or damaged plunger with this genuine part restores proper sealing and efficient pressure generation. This ensures that the sprayer delivers consistent performance and prevents further damage to the pump. When replacing the plunger, it is recommended to install new packings and seals and to inspect the connecting rod and cylinder for wear.