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Sierra 18-1902 Starboard Exhaust Manifold for OMC GM V8 Small Block

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-1902
16 reviews
04/03/2036 5:35 PM
Sale Price

$339.14

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Product Details

The Sierra 18-1902 is a high-quality starboard side exhaust manifold designed specifically for OMC Cobra stern drive applications with GM small block V8 engines. This heavy-duty cast iron manifold fits 5.0L and 5.7L (305 and 350 cubic inch) marine engines equipped with end riser style exhaust systems, commonly found in 1987-1989 OMC models.

Key Features:

  • Heavy-duty cast iron construction for maximum durability and heat resistance
  • Factory painted black finish for corrosion protection
  • Professionally leak tested before packaging to ensure quality
  • Includes exhaust manifold gaskets and drain cap with hose clamp
  • Precision-cast with smooth mating surfaces for proper sealing
  • Designed to meet or exceed OEM specifications

Replacement Information:

  • Replaces OEM part numbers: OMC 912441, 909280
  • Cross-references: GLM 51410, Barr OMC-1-912441, Mallory 9-40602, Osco 2441
  • Recommended mounting kit: Sierra 18-8502 (sold separately)
  • Compatible exhaust elbow: Sierra 18-1921

Sierra marine engine parts are manufactured to stringent quality standards, providing reliable performance for demanding marine environments. This starboard manifold is engineered for proper fitment on GM small block V8 applications with log-style end rise manifold configurations.

Products specifications

Application

V8 Starboard Side - most GM V8 small blocks with end riser. Uses mounting kit 8502

Replaces

OMC Sterndrive/Cobra 912441

Awesome love the site

No problems everything was perfect .

Very user friendly.

Don't know. Nothing has happened yet.

It was what my grandson needed to fix up his old Jeep he's been working on.

Very satisfied and very competitive price.

good and quick

Fast shipping and best price on the web! I will be back and will recommend the site to friends.

The only thing I would like to know is what the manifold kit comes with for hardware. Its not specified if they come with any hardware or gaskets at all and i would like to be prepared to do the job when they arrive in the mail.

All seems great. Had item in stock as on there website and it was shipped quickly.

Price was very cheap. The cheapest I could find anywhere. Should be at my house soon. Very easy cite to navigate.

Your online catalog was simple to navigate and you have competitively low prices on top of a variety of economy to name brand quality parts. Your website was the only place that carried the specific brand oil pump i was searching for and the great pricing

Anxious to try your product

Had to do order twice. Hope I don't get charged twice.

Could not find the part I was looking for at any other 4x4 website. Found it here and it was cheaper than almost every other place. Since I saved some I went ahead and paid the extra for 2-day shipping and still came out on top price wise. Definitely will be checking here again for parts for my Jeep!

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