Advantage 400/500 Repair Kit

SprayTech Titan Genuine OEM part 0551533 (S/S 0552951) Pump Packing Repair Kit for the Titan Advantage 400/500, SprayTech EPX2155, EPX2255, SW623XL, and the New style SW419 Airless paint Sprayer.
The new style SW419 handle went from left to right and the serial number has 10 numbers only.