My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-0465 Marine Intake Manifold Gasket Set GM 454 7.4L Big Block

Manufacturer

Picture for manufacturer Sierra

Part Number

18-0465
14 reviews
Sale Price

$44.31

In Stock (10+)

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 18-0465 is a replacement intake manifold gasket set engineered for GM 454 CID (7.4L) Big Block V8 marine engines with oval port cylinder heads. This set is designed for use in Mercruiser and OMC stern drive applications, including 325, 330, 340, and 350 HP engines as well as 454 Magnum variants.

Key Features:

  • Direct replacement intake manifold gasket set for GM 454 CID / 7.4L Big Block marine engines
  • Designed for oval port cylinder head configurations
  • Meets or exceeds OEM specifications in quality and performance
  • Compatible with Mercruiser stern drive and OMC stern drive / Cobra applications
  • Sold as a pair

Cross-Reference Part Numbers:

  • GLM: 39170
  • Mallory: 9-61201
  • Mercruiser: 27-65184, 27-8M0050224
  • OMC: 352670

Sierra International is a trusted supplier of premium-quality aftermarket marine parts, providing replacements for over 6,000 marine components. The 18-0465 gasket set is built to withstand the demands of the marine environment, making it a reliable choice for engine maintenance and rebuild projects.

I just received my Knn filter. Shipment was on time. The box look beat up and deformed with a lot of tapes but the filter seems to be in good condition.

Fast and easy!! Thanks!! aaa++++

Overall great experience

Good so far

Prices are comparable to other retailers. And they have items in stock that others were saying it would take a month. Fast shipping and great communication. Thank

Great prices. Great customer services. Reasonable shipping and ship time.

Good prices!!! Had problems with shipping order but was made very good on issue!! Now placing another order. Thanks guys

First off I gotta say that my item arrived much quicker than expected. Funny thing is I ordered a part from another site a few days before I ordered the one from Autoplicity... and I received the Autoplicity item before the other item. In fact the other item hasn't arrived it. Plus the one I ordered from Autoplicty is significantly larger. The item arrived in perfect condition. Pretty impressed. This company is on my recommendations list for sure. They even offer a small reimbursement for writing review. Sheesh they deserve it.

Your site looks professionally constructed and has an easy to understand interface.

Almost a perfect score! I was pleased with the customer service but knowledge about their products warranties was lacking. Other than that, the representative that I spoke with on the phone was great. He was friendly and had a good overall knowledge of the products I was asking about. Pointed me in the right direction because I couldn't be happier with my bike rack. They had the best prices, lowest shipping costs, and my order arrived a day early. Great website to work with. I will definitely be doing business again and spreading the word about Autoplicity.com.

simply and quick

Best prices by far and extremely easy to shop and buy.

Good

easy website to navigate though.

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