Skip to content
Celebrating over 50 years of Trusted Marine Service
Over 50 years of Trusted Marine Service

Attwood Deck Fill Replacement Cap For 66406, 66408, 66408C1, Stainless Steel

Original price $73.59 - Original price $73.59
Original price
$73.59
$73.59 - $73.59
Current price $73.59
Item locally warehoused

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

Restore the closure on select Attwood deck fill assemblies with this stainless steel replacement cap and attached beaded chain. Built for a secure, tethered fit so the cap stays with the fill during fueling.

Key Features

  • Replacement Attwood deck fill cap for select deck fill assemblies (listed models)
  • 316 stainless steel construction
  • Stainless steel beaded chain is attached to help keep the cap from getting lost
  • Designed for a direct replacement cap/chain service item for worn or missing caps

Intended Use

  • Attwood deck fill assemblies (replacement cap service for listed models)
  • Marine deck fill ports requiring a cap tether/closure replacement

Product Details

  • Brand: Attwood
  • Part/Item identifier (SKU): 23-660743
  • Material: 316 stainless steel
  • Includes: replacement cap with attached stainless steel beaded chain
  • Attwood models referenced for this replacement cap: 66406, 66408, 66408C1

Parts Desk Insights

Best Use Case: Ideal when the deck fill cap is missing, damaged, or no longer closes properly and you want to retain the original fill body while replacing only the cap/chain assembly.

Common Issues: Deck fill closures are fit-sensitive—verify the referenced Attwood deck fill model on your existing fill assembly before replacing, and inspect any existing seal/O-ring area during service to ensure a clean, tight closure after reassembly.

Related Products & Accessories

  • Browse Deck Fillers - Explore the Deck Filler category for matching deck fill components, caps, and related hardware.
Shipping information

In-stock and OEM parts: ship same or next business day.

Locally warehoused items: ship within 1-3 business days.

Special-order items: timeline confirmed after order.

Returns & warranty

Returns & Satisfaction Guarantee

We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.

If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.

To qualify for a return:


  • Item must be in new, unused condition

  • Product must be in its original packaging

  • All parts, components, hardware, manuals, and accessories must be included

  • Packaging must be undamaged and suitable for resale

Important:

Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.

We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.

For return authorization, please contact our support team before shipping anything back.

Free Shipping

When you spend $150 or more

Here to Help

Get in touch with us

Store Pickup

Pick up your order yourself, for free

Easy Exchanges

Return or exchange within 30 days