My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Sierra 18-8084 Marine Fuel Connector 3/8" Barb Mercury/Mariner Bayonet Style

Manufacturer

Picture for manufacturer Sierra

Part Number

18-8084
14 reviews
Sale Price

$13.17

1 left at this price

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-8084 is a bayonet-style push-and-turn quick-disconnect fuel connector designed for older Mercury and Mariner outboard engines. This male-style connector features a 3/8" hose barb and twist-on bayonet design that mates securely to the engine or fuel tank, providing a reliable fuel line connection for the older 6.6-gallon fuel tank system.

Constructed from die-cast aluminum, this connector is built to withstand the demanding conditions of the marine environment. Sierra engineers this connector to meet or exceed OEM standards, making it a dependable aftermarket replacement for worn or damaged fuel connectors.

Key Features:

  • Bayonet-style push-and-turn quick-disconnect design
  • 3/8" hose barb fitting
  • Die-cast aluminum construction
  • Male connector configuration
  • Compatible with older 6.6-gallon fuel tank systems
  • Meets or exceeds OEM specifications

Replaces OEM Part Numbers:

  • Mercury: 22-16610M
  • Mercury: 29196
  • Mercury: 30185A1
  • Mercury: 30185A3
  • Mercury: 30185B3
  • Mercury: 30185Q3

Sierra is a trusted name in marine aftermarket parts, offering premium-quality replacements across a broad range of engine and fuel system components. The 18-8084 is a direct-fit solution that restores proper fuel delivery to your Mercury or Mariner outboard.

My order #4383 was fulfilled quickly and shipped in a timely fashion. The price was super competative and the web site is user friendly. I will be back for more I'm sure! Shipping should be free for orders over a certain price, say $50?!?!

Autoplicity so far has been great place to buy online automotive stuff. Good prices and well organized.

Arrangement of checkout field sets is counter-intuitive. I almost bailed twice.You should consider consulting a UX expert to streamline your user experience.

Went great thanks

Easy to order.

Was not able to use Paypal although it shows availability.

Quick checkout offering Amazon or PayPal checkout very convenient

Very Quick and easy to place an order, let's see how fast it arrives!

New shopper

Everything went nice and smooth. Thanks.

Easy transaction and great price. Thanks for allowing the Amazon checkout too, awesome!

Best price on the web, will definately use autoplicity in teh future.

Awesome price on this product. First time customer with you guys, but I will definitely be coming back if you keep your prices this aggressive!

Great transaction! Best price literally anywhere! Autoplicity is a great place to shop!!!

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy