Attwood Marine Swivl-Eze Seat Base Insert Bushing, 3/4 in Pin Post

Overview

The Attwood Marine P340 is a black replacement bushing for seat bases that use a 3/4 inch pin-post pedestal. It is the wear insert that sits between the post and base, so it becomes an important part when a seat starts to feel loose, turns roughly, or develops extra play.

This is a small service part, but it has a direct effect on how a pedestal seat feels underway and at rest. Replacing a worn bushing can freshen the fit at the base without replacing the whole pedestal assembly, which is useful on boats that still have sound seat hardware and only need attention at the contact point.

Key features

• Replacement bushing for seat bases built around a 3/4 inch pin-post pedestal
• Black nylon insert used at the wear point between the pedestal post and seat base
• Helpful when a seat begins to rock, squeak, or lose its snug swivel feel from bushing wear
• Lets you service the base instead of replacing the full pedestal, post, and seat mount

Compatibility and fit

Check your seating hardware carefully before ordering. This part is meant for 3/4 inch pin-post pedestal setups and is the bushing insert only, not a complete base, post, swivel, or mounting plate.

It makes the most sense when you are keeping an existing Attwood or Swivl-Eze style pedestal system in service and need to restore the fit at the seat base. If your boat uses another post diameter or a different pedestal design, this will not be the right replacement.

Installation and use

Installation is straightforward during normal seat-hardware service. Remove the worn insert from the base, inspect the mating pin and base opening for damage or heavy wear, and fit the new bushing in place before reassembling the seat.

This kind of repair is especially useful on helm seats, cockpit seats, and fishing seats where people swivel in and out often. When the rest of the pedestal hardware is still in good shape, replacing the bushing is a practical way to tighten the seat back up and keep the seating position feeling stable on the water.

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.