Sierra Manifold Gasket Set 18-4367

The Sierra 18-4367 is a high-quality aftermarket exhaust manifold gasket set designed to meet or exceed OEM standards, ensuring a reliable seal for your marine engine's exhaust system. This essential kit prevents leaks, maintains proper exhaust flow, and protects against corrosion in demanding saltwater environments.Specifically engineered for MerCruiser GM inline 4-cylinder engines: 153 CID (2.5L) and 181 CID (3.0L), 120 HP and 140 HP models with Siamese port cylinder heads (serial numbers 6229718 and up).It directly replaces Mercury/MerCruiser OEM part 27-99777A1, as well as Barr MC47-27-99777A1, GLM 39320, and Mallory 9-61406.

Features

• Precision-cut gaskets for perfect fit and maximum sealing performance
• Durable materials resistant to heat, pressure, and marine conditions
• Complete set for straightforward manifold removal and reinstallation

Contents

• 1 x 18-2832-1 Manifold End Cap Gasket
• 1 x 18-0928-1 Manifold End Cap Gasket
• 1 x 18-1204-1 Exhaust Manifold Mounting Gasket
• 1 x 18-2833 Exhaust Elbow Gasket
• 1 x 18-2831 Thermostat Cover Gasket
• 1 x 18-0994 Carburetor Mounting Gasket