Attwood Marine Garboard Drain Plug, 7/8 in Diameter, SS316
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Overview
The Attwood Marine 7557-7 is a stainless steel garboard drain plug for boats that use a 7/8 in drain opening. It uses a threaded removable plug with a retention feature that keeps the plug attached to the fitting, and the opening measures 7/8 in (27 mm). The body is polished 316 stainless steel, which makes sense for a drain point that sees regular splash, washdowns, and repeated removal through the season.
This plug is a straightforward replacement for a worn or missing garboard plug on a boat with the same drain size. The larger opening also works well where the drain point is used for stern drive service access. A gasket is not included, so the seal should be matched to the existing drain assembly.
Key features
- Fits a 7/8 in (27 mm) garboard drain opening
- Polished 316 stainless steel construction for better corrosion resistance around the transom and drain area
- Threaded removable plug with a retention feature so the plug stays with the fitting during draining and cleaning
- Large opening gives easier access on boats where the garboard drain is also used when servicing stern drives
- Gasket is not included, which matters when replacing an existing seal or matching the current setup
Compatibility and fit
The main point to confirm before ordering is drain size. This part is built around a 7/8 in opening, so it should be matched to the boat's existing garboard drain assembly rather than chosen by boat length or brand alone.
It is a good match for owners replacing a lost, corroded, or hard-to-remove plug on a boat that already uses this size. On older boats or custom installations, it is worth checking the existing fitting and sealing method before installation.
Installation and use
The threaded plug format keeps routine draining simple at haul-out, on the trailer, or during maintenance. The retention feature helps keep the plug from being misplaced when it is removed, which is useful around ramps, yards, and busy service areas.
For best results, keep the threads and sealing surface clean and inspect the gasket or sealing washer used with the existing assembly. On boats used in saltwater, a quick freshwater rinse during routine washdowns helps keep the finish and threads in better shape over time.
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.
Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.
Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.