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Sierra 18-3877 Marine Head Gasket for GM 7.4L V8 Engines

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3877
10 reviews
Sale Price

$66.40

In Stock (10+)

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Usually delivered within 2 days

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FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3877 is a premium marine-grade cylinder head gasket designed specifically for GM 7.4L (454 cubic inch) V8 marine engines. This critical engine component creates a reliable seal between the cylinder head and engine block, preventing combustion gases, coolant, and oil from leaking.

Key Features:

  • Engineered for GM 7.4L marine engines with exceptional durability
  • Marine-grade construction withstands harsh saltwater and freshwater environments
  • Precision-manufactured to OEM specifications for proper fit and sealing
  • High-temperature resistant materials maintain seal integrity under extreme operating conditions
  • Prevents oil and coolant contamination for optimal engine performance

Sierra International is a trusted name in marine replacement parts, offering reliable components that meet or exceed original equipment standards. This head gasket is an essential component for engine rebuilds, overhauls, or when addressing head gasket failure on GM 7.4L marine applications.

Quick and easy!

Easy, easy, easy

Extremely fast shipment and the best price on the internet. Highly recommended.

Things where awesome you guys had the best price out of anyone but you should update your site as these brakes fit a lot more models than you list!!

Great products, great prices, fast shipping!

Quick Order Process!

Very easy to navigate your website.

best price I can find on a motive brake bleeder anywhere. shipped same day - now that's great service!

Ordered on Sunday, called on Monday for tracking #, received product on Tuesday, and received tracking # on Wed!! I got the item before Autoplicity got a chance to send me the email with the tracking #. A+++!!!

Website is easy to use.

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