Camco D-I-Y Boat Winterizer Engine Flushing System

Camco D-I-Y Boat Winterizer Engine Flushing System — Prep Your Marine Engine for Storage at Home

Winterizing a boat engine doesn't have to mean an expensive trip to the marina. The Camco D-I-Y Boat Winterizer Engine Flushing System gives boat owners a straightforward, cost-effective way to flush and protect inboard and outboard marine engines before laying them up for the cold months. With just five gallons of antifreeze and your existing flusher, the whole job can be handled in your own driveway — season after season.

Why This Kit Makes Winterizing Easier

• Designed for DIY confidence: The system is built around a straightforward process that doesn't require professional tools or specialized training, making it a practical choice for everyday boat owners.
• Compatible with inboard and outboard engines: Covers a broad range of common marine engine setups, so it works for many recreational boats.
• Efficient antifreeze use: The system is engineered to work with just five gallons of antifreeze — no waste, no guesswork about how much product to have on hand.
• Works with your existing flusher: Rather than replacing what you already own, this kit integrates with a standard flusher you likely have in the garage.
• Saves money over time: Avoiding marina service fees for a routine annual task adds up to meaningful savings across multiple seasons.
• Useful for marine technicians too: Professionals who service multiple boats will find the system efficient enough for shop use.

What's Included and Compatibility Notes

The kit contains everything needed to get started with a standard raw water pump configuration. However, if your engine has a front-mounted raw water pump system, you will need the Flush Adapter, which is sold separately — check your engine specifications before purchasing to confirm which setup you have.

If you're also looking for a standalone flushing solution, the Panther Inboard HD Flush Buddy is worth comparing for inboard applications, and the Sea-Dog Rectangular Motor Flush offers another option for outboard flushing needs.

Fitting This Into Your Full Winterization Routine

Engine flushing is one important step in a complete winterization process, but protecting the whole boat takes a few more measures. Keeping moisture out of the engine block with a proper blow-out is another common step — the Camco Blow Out Plug is a simple companion tool for that job. Once the engine is prepped, covering the boat correctly over winter matters too; the Camco Adjustable Boat Cover Support Kit helps keep a cover properly supported and ventilated during storage.

A Few Things to Know Before You Buy

• Antifreeze not included: Plan to have five gallons of marine-grade antifreeze on hand before starting the job.
• Prop 65 Notice: This product carries a California Proposition 65 warning for exposure to chemicals including lead. For full details, visit P65Warnings.ca.gov.
• Front-mounted pump systems: Require the separately sold Flush Adapter for compatibility.

WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.