My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-4399 Marine Exhaust Manifold Gasket Set for MerCruiser Ford 302/351

Manufacturer

Picture for manufacturer Sierra

Part Number

18-4399
11 reviews
Sale Price

$39.99

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 International 18-4399 is a complete exhaust manifold gasket set engineered for MerCruiser stern drive applications powered by Ford 302 and 351 CID (5.0L and 5.8L) small block V8 engines. This 10-piece kit supplies all the gaskets needed to properly seal both exhaust manifolds and elbow risers during manifold replacement or rebuild service.

What's Included:

  • (4) Sierra 18-2833 Exhaust Elbow Gaskets
  • (4) Sierra 18-2832-1 Manifold End Cap Gaskets
  • (2) Sierra 18-0183-1 Exhaust Manifold Gaskets

Key Features:

  • Designed for Ford Small Block log-style manifolds with a square bolt riser mounting flange (2-13/16" x 3-1/16" bolt centers)
  • Meets or exceeds original equipment (OEM) specifications
  • Direct replacement for MerCruiser OEM part number 27-54566A1
  • Interchangeable with GLM 39310 and Barr MC47-27-54566A1
  • Compatible with manifold part numbers OSC5603, OSC5604, MC-1-65604, and MC-1-65603

Engine Compatibility:

  • Ford 302 CID (5.0L) and 351 CID (5.8L) marine engines
  • All 888 models (188 HP), 233 HP, and 255 HP — serial numbers 3258728 through 4175498

Sierra International is a leading manufacturer of marine replacement parts. Each Sierra product is built to meet or exceed the OEM part it replaces, ensuring a reliable, leak-free seal when servicing your marine exhaust system.

Ordered on a Thursday evening and received my parts on Tuesday. Very quick but the website couldn't provide proper tracking info.

quick

good price!

this was a quick and easy order, although they came up in free shipping, i was charged for shipping. BUT, they were the least expensive for what i ordered on the entire web. thanks for being the lowest price!!!

Thank you.

very simple

Purchased set of four Scribner 5 gallon utility jug. After doing considerable looking, Autoplicity had the lowest price by far in comparison to all other competitors. Communication has been great with items ordered shipped with tracking number the next day. Great buying experience.

Great!!

Excellent

Thanks

easy

Share icon
Return Policy
Returns are easy at Boatplicity

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