[Fit on] 190593GS Chemical Injector Kit is a replacement soap injector kit for various pump models, compatible with FAIP Pumps and Himore Pumps. [Function] This kit can replace a worn-out, rusted, or clogged chemical injector on your pressure washer. [Easy Installation] To replace: Follow the soap hose to the end to locate the injector. Use a wrench to remove the old injector. Clean any residue or dried soap from the receptacle. Ensure the rubber O-ring is in place on the injector. Insert the ball bearing into the injector, then place the spring with the smaller end against the ball bearing. Insert the injector into the receptacle and tighten using a 13mm wrench. Do not overtighten to avoid damaging the O-ring or cracking the pump housing. Note: Installation guide is not included; professional installation is recommended. Please verify compatibility before purchase. Tips: Product design may vary slightly between batches, including minor color or appearance differences, which do not affect functionality. Color: As shown. Material: Copper. Package Contents: 1 x Injector Kit. Only the listed item is included; other items are not part of this package. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement tolerance: +/- 1-3 cm.