Johnson 500 GPH Automatic Bilge Pump Plumbing Kit

This all-in-one bundle provides a complete drainage solution for your boat, featuring the high-efficiency Johnson Pump Ultimate Combo. Designed for compact reliability, this kit includes everything needed to route water from the bilge to the exterior of the hull with an emphasis on "no-moving-parts" technology.

The Johnson 500 GPH pump features the integrated Ultima Switch, which uses digital sensing cells to detect water levels without the mechanical failures common in traditional float switches. Paired with 10 feet of flexible, kink-resistant corrugated hose and marine-grade stainless steel clamps, this setup ensures a leak-proof connection that resists corrosion. The included 3/4-inch thru-hull fitting provides a clean, professional finish for your discharge point.

What’s in the Box:

• Johnson 500 GPH Automatic Bilge Pump (with Ultima Switch)

• 10' Length of 3/4" ID Corrugated Bilge Hose

• 2 Stainless Steel Hose Clamps

• 3/4" Plastic Thru-Hull Fitting

Why This Bundle Works:

• Solid-State Reliability: The integrated Ultima Switch has no moving parts to get jammed by debris, providing a more reliable automatic trigger than standard mechanical switches.

• Optimized Flow: The 3/4" interior diameter hose is perfectly matched to the Johnson 500 outlet to maintain maximum GPH output and prevent motor strain.

• Everything is Marine-Grade: Featuring an ABS plastic pump housing and 304 stainless steel hardware, every component is built to withstand continuous exposure to bilge water and salt.

• Simple DIY Installation: The 10' hose length offers significant flexibility for routing around stringers and bulkheads in small to mid-sized vessels.

Pro Tip: When installing, ensure the pump is mounted on a flat surface at the lowest point of the bilge to ensure the digital sensors can accurately detect rising water!