Description
This pump repair kit is a direct-fit replacement for Airlessco part 187-042 and the OEM pump packing used in Airlessco 3600, 4100, 5100, 5300, and 6100 Pumps sprayers. It is commonly installed when pumps lose pressure, begin leaking, or require a full rebuild due to normal wear.
Common reasons this kit is replaced:
- Pressure drop during continuous spraying
- Fluid bypass inside the pump assembly
- Visible leakage around piston rod area
- Scheduled rebuild on high-use contractor equipment
This kit is frequently used by professional contractors to restore pump performance on Airlessco sprayers. All components are manufactured to OEM-equivalent dimensions to ensure proper sealing, durability, and reliable operation in demanding jobsite conditions.
Manufactured to OEM-equivalent dimensions for proper fit and performance. Compatible Airlessco equipment models are listed in the Compatible Equipment section below, where available.
