Sierra 18-0868 Intake Manifold Gasket Set, Replaces 16.50-00232, Fits MCM/MIE GM V-8 305 & 350 cid Engines

The Sierra 18-0868 intake manifold gasket set seals the intake manifold to the engine block on compatible marine engines, providing the gasket surface needed to prevent coolant, oil, or combustion leaks at this joint. It is sold as a package of 2 gaskets, giving a complete matched set for a single intake manifold installation or reseal job. The set is built as a direct replacement for OEM part number 16.50-00232, so it installs in place of the original equipment gasket without modification.

This gasket set is designed for MCM/MIE GM V-8 engines in 305 and 350 cubic inch displacement, 1975 and newer, and also fits OMC 5.7L engines from the 1994 and 1996-1997 model years. Boat owners and marine technicians use it during intake manifold removal, engine rebuilds, or when addressing a leaking or failed intake gasket. Confirming your engine matches the GM V-8 305/350 cid or OMC 5.7L applications listed, or cross-referencing to OEM 16.50-00232, is the best way to verify fit before ordering.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0868
• Product Type: Intake Manifold Gasket Set
• Packaging: Package of 2 gaskets
• Weight: 0.31 pounds
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• UPC: 030999755131
• OEM Cross Reference: 16.50-00232

Fitment

• MCM/MIE GM V-8 305 and 350 cid engines, 1975 and newer
• OMC 5.7L engines, 1994, 1996-1997

Replaces (OEM)

• 16.50-00232

Frequently Asked Questions

What OEM part number does the Sierra 18-0868 gasket set replace? The Sierra 18-0868 intake manifold gasket set replaces OEM number 16.50-00232.

How many gaskets are included in the 18-0868 set? This set is sold as a package of 2 gaskets, providing a complete matched pair for an intake manifold installation.

Which engines does the Sierra 18-0868 gasket set fit? It fits MCM/MIE GM V-8 engines in 305 and 350 cubic inch displacement (1975 and newer), as well as OMC 5.7L engines from 1994 and 1996-1997.

Will this gasket set fit an OMC 5.7L engine? Yes, the 18-0868 set is designed to fit OMC 5.7L engines from the 1994 and 1996-1997 model years.

Does the 18-0868 fit MerCruiser MCM/MIE engines? Yes, it fits MCM/MIE GM V-8 305 and 350 cid engines built in 1975 and newer.

How much does the Sierra 18-0868 gasket set weigh? The 18-0868 intake manifold gasket set weighs 0.31 pounds.

What are the dimensions of the 18-0868 gasket set? The set measures 0.39 x 0.39 x 0.39 inches as packaged.

Is the Sierra 18-0868 an OEM part or an aftermarket replacement? It is an aftermarket gasket set manufactured by Sierra, engineered as a direct replacement for OEM 16.50-00232.

What is included when I order the 18-0868 gasket set? You receive a package of 2 intake manifold gaskets, the complete set needed for one intake manifold installation.

How do I confirm the 18-0868 is the correct gasket for my engine? Match your engine to MCM/MIE GM V-8 305 or 350 cid (1975 and newer) or OMC 5.7L (1994, 1996-1997), or cross-reference to OEM number 16.50-00232.