Sierra 18-0897 Exhaust Elbow Gasket, Replaces Mercruiser 27-41813

The Sierra 18-0897 is a round exhaust elbow gasket built to seal the mating surface between a marine exhaust manifold and its exhaust elbow (riser) on Mercruiser-style exhaust manifold setups. It is manufactured to meet or exceed the quality of the original equipment part it replaces, giving boat owners a direct, OEM-fit seal without the premium price of a dealer part.

This gasket is used as part of the mounting hardware for exhaust manifold elbow risers. In Sierra's mounting kit configuration, the 18-0897 elbow gasket is included alongside the 18-2849-1 elbow gasket for use with Manifold Spacer 18-1906 paired with Riser 18-1971 or Riser 18-1978, so it is a key seal when installing or servicing that manifold spacer and riser combination. Because it is sold individually here, it is also a convenient replacement-only purchase for anyone who already owns the elbows, spacer, and studs and simply needs a fresh, properly sized gasket to reseal the joint during a routine service or leak repair.

Each gasket is a single round unit designed to be replaced any time the exhaust elbow or manifold spacer is removed, since a used gasket should not be reused once disturbed. It is interchangeable with several other aftermarket and OEM cross-reference part numbers, making it easy to source as a match for an existing Mercruiser exhaust system regardless of which brand originally supplied the gasket.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0897
• Product Type: Exhaust Elbow Gasket
• Shape: Round
• Unit Count: 1 gasket
• Weight: 0.04 pounds
• UPC: 030999751720
• Compatible Mounting Kit: Included in Mounting Kit 18-8554, used with Manifold Spacer 18-1906 and Riser 18-1971 or 18-1978
• OEM Cross Reference: Barr MC47-27-41813, GLM 30240, Mallory 9-61413, Mercruiser 27-41813, 27-860233, 27-863724, Osco 8503-GR

Fitment

• Used with Manifold Spacer 18-1906 paired with Riser 18-1971 or Riser 18-1978
• Included as one of the elbow gaskets in Mounting Kit 18-8554

Replaces (OEM)

• Barr MC47-27-41813
• GLM 30240
• Mallory 9-61413
• Mercruiser 27-41813
• Mercruiser 27-860233
• Mercruiser 27-863724
• Osco 8503-GR

Frequently Asked Questions

What is the Sierra 18-0897 used for? The Sierra 18-0897 is a round exhaust elbow gasket that seals the joint between a marine exhaust manifold and its exhaust elbow, typically used when installing or servicing a manifold spacer and riser assembly.

Does the 18-0897 gasket fit Mercruiser exhaust manifolds? Yes, the 18-0897 gasket is designed for use in Mercruiser exhaust manifold setups and is interchangeable with Mercruiser cross-reference numbers 27-41813, 27-860233, and 27-863724.

What OEM part numbers does Sierra 18-0897 replace? Part 18-0897 cross-references to Barr MC47-27-41813, GLM 30240, Mallory 9-61413, Mercruiser 27-41813, Mercruiser 27-860233, Mercruiser 27-863724, and Osco 8503-GR.

How many gaskets come in one order of 18-0897? Each order of the Sierra 18-0897 includes one round exhaust elbow gasket.

How much does the 18-0897 exhaust elbow gasket weigh? The Sierra 18-0897 weighs 0.04 pounds.

Is the Sierra 18-0897 an OEM or aftermarket gasket? The 18-0897 is a Sierra aftermarket gasket manufactured to meet or exceed the quality of the original equipment part it replaces.

What other parts is the 18-0897 gasket used with? The 18-0897 elbow gasket is included in Mounting Kit 18-8554, used alongside Manifold Spacer 18-1906 with Riser 18-1971 or Riser 18-1978.

Should I reuse an old exhaust elbow gasket instead of buying 18-0897? No, an exhaust elbow gasket like the 18-0897 should be replaced with a new gasket any time the elbow or manifold spacer is removed, since a disturbed gasket will not reseal properly.

What shape is the Sierra 18-0897 gasket? The Sierra 18-0897 is a round gasket.

Can I use the Sierra 18-0897 as a direct replacement for a Barr or Mallory gasket? Yes, the 18-0897 cross-references directly to Barr MC47-27-41813 and Mallory 9-61413, so it can be used as a like-for-like replacement for those parts.

What is the UPC for the Sierra 18-0897 gasket? The Sierra 18-0897 exhaust elbow gasket has UPC 030999751720.