# Sea-Dog Rectangular Motor Flush [521520-1]

**Rectangular Motor Flush**

Molded PVC/Painted Steel

Outboard Rectangular Motor Flush quickly flushes away salt, sand, minerals, and contaminates from your lower unit cooling system, extending the engine’s service life. Easy-to-use molded PVC cups deliver fresh water to flush the cooling system through side intakes on the lower unit. Simple garden hose connection, no tools required. Great for winterizing, tune-ups, and other maintenance that requires running an outboard engine out of the water. Features rectangular cups for use with larger outboards.

![Warning](https://productimageserver.com/prop65/6pt.png)**WARNING:** This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to [P65Warnings.ca.gov](http://P65Warnings.ca.gov).

## Details

- **Price:** 11.25 USD
- **Type:** Flush Kits
- **Tags:** Brand_Sea-Dog, Engine Parts & Service, Engine Parts & Service | Flush Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 11.25 USD | In stock |

## Images

- Sea-Dog Rectangular Motor Flush [521520-1] Sea-Dog

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> Source: [Besafe1st](https://besafe1st.com/products/sea-dog-rectangular-motor-flush-521520-1)
> Updated: 2026-05-27