Sierra 18-0672-9 Exhaust Elbow Gasket, Replaces Mercruiser 27-8637251, 27-860231, 27-863725, 27-41811, 2-Pack

The Sierra 18-0672-9 Exhaust Elbow Gasket seals the connection between the exhaust manifold elbow and manifold on inboard and sterndrive engine exhaust systems, preventing exhaust and coolant leaks at the joint. It is sold priced per 2-pack, so each purchase includes a pair of gaskets for a complete elbow gasket replacement. Sierra manufactures this gasket to meet or exceed the quality of the original equipment part it replaces, making it a reliable choice when servicing your exhaust elbow assembly. The gasket is built from a denim material in a multi-colored finish. It is designed to work with Sierra's manifold elbow 18-1970-2 (a 3 inch hose, 0 degree down angle elbow), which in turn fits Sierra manifold 18-1952-1, and it is one of the elbow gaskets called for when installing mounting kits 18-8529 or 18-8555. This gasket is also a direct interchange for several Mercruiser OEM part numbers, so it can be used as a drop-in replacement during routine maintenance or when rebuilding the exhaust elbow connection. Keep spares on hand whenever the elbow or manifold is removed, since exhaust gaskets should be replaced any time the joint is disassembled.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0672-9
• Package Quantity: 2 gaskets per pack
• Weight: 0.09 pounds
• Material: Denim
• Color: Multi-Colored
• UPC: 808282166687
• Compatible Manifold Elbow: 18-1970-2 (3 inch hose, 0 degree down angle)
• Compatible Manifold: 18-1952-1

Fitment

• Fits Sierra manifold elbow 18-1970-2 (3 inch hose, 0 degree down angle)
• Used with Sierra manifold 18-1952-1
• Called for with mounting kit 18-8529 or mounting kit 18-8555

Replaces (OEM)

• Mercruiser 27-8637251
• Mercruiser 27-860231
• Mercruiser 27-863725
• Mercruiser 27-41811

Frequently Asked Questions

What does the Sierra 18-0672-9 gasket fit? The Sierra 18-0672-9 exhaust elbow gasket is designed for use with Sierra's manifold elbow 18-1970-2, a 3 inch hose, 0 degree down angle elbow that fits Sierra manifold 18-1952-1.

How many gaskets come in a pack? The 18-0672-9 gasket is priced and sold as a 2-pack, so each order includes two gaskets for a complete elbow gasket replacement.

Is the Sierra 18-0672-9 gasket a genuine Mercruiser part? No, it is a Sierra-manufactured aftermarket gasket, but it is built to meet or exceed the quality of the original equipment part it replaces.

What OEM Mercruiser part numbers does 18-0672-9 replace? This gasket interchanges with Mercruiser part numbers 27-8637251, 27-860231, 27-863725, and 27-41811.

How much does the 18-0672-9 gasket weigh? The 2-pack of Sierra 18-0672-9 exhaust elbow gaskets weighs 0.09 pounds.

What material is the 18-0672-9 gasket made from? The Sierra 18-0672-9 exhaust elbow gasket is made from a denim material.

Can I use the 18-0672-9 gasket with a different manifold elbow? The 18-0672-9 gasket is designated for Sierra's 18-1970-2 manifold elbow assembly; check your existing elbow and manifold part numbers before ordering to confirm a match.

Do I need a mounting kit along with this gasket? The 18-0672-9 gasket is one of the elbow gaskets called for in Sierra mounting kits 18-8529 and 18-8555, which may be needed depending on your manifold spacer setup.

When should I replace the exhaust elbow gasket? Any time the exhaust manifold elbow is removed from the manifold, such as during service or replacement of the 18-1970-2 elbow, the 18-0672-9 gasket should be replaced to maintain a proper seal.

What color is the Sierra 18-0672-9 gasket? The 18-0672-9 gasket has a multi-colored finish.

Is the Sierra 18-0672-9 gasket sold individually or as a set? It is sold as a 2-pack, not individually, providing both gaskets needed for the elbow connection in one purchase.