EMP Exhaust Riser Gasket, Replaces Mercury 18-0897, Fits 18-1906 Manifold Spacer, 18-1971 and 18-1978 Risers

The EMP 27-00524 is an exhaust riser gasket built as a direct replacement for the Mercury 18-0897 elbow gasket used in Mercruiser exhaust manifold assemblies. It seals the connection between the exhaust manifold riser and the manifold spacer, helping maintain a tight, leak-free joint that keeps exhaust gases and cooling water properly routed away from the engine. This gasket is matched to installations built around the 18-1906 manifold spacer paired with either the 18-1971 or 18-1978 exhaust riser, and it is one of the elbow gaskets found in the 18-8554 mounting kit configuration. At 0.042 pounds, it is a light, low-cost wear item that is typically replaced whenever the riser or manifold spacer is removed for service, since reusing an old gasket can lead to exhaust or water leaks at the joint. Boat owners servicing a Mercruiser exhaust system with this riser/spacer combination can use the 27-00524 gasket to restore a proper seal without needing to source the original Mercury part number. Always confirm your exhaust assembly matches the 18-1906 spacer and 18-1971/18-1978 riser configuration before ordering, since exhaust manifold gaskets are not universal across all riser and spacer combinations.

Specifications

• Brand: EMP
• Manufacturer Part Number: 27-00524
• Product Category: Mercruiser Exhaust Manifolds
• Weight: 0.042 pounds
• UPC: 840080434155
• OEM Cross Reference: 18-0897
• Compatible Manifold Spacer: 18-1906
• Compatible Exhaust Risers: 18-1971, 18-1978
• Compatible Mounting Kit: 18-8554

Fitment

• Manifold Spacer 18-1906
• Exhaust Riser 18-1971
• Exhaust Riser 18-1978
• Mounting Kit 18-8554

Replaces (OEM)

• 18-0897

Frequently Asked Questions

What does the EMP 27-00524 exhaust riser gasket replace? This gasket replaces Mercury part number 18-0897, an elbow gasket used in Mercruiser exhaust manifold assemblies.

Which risers is the 27-00524 gasket designed to work with? It is designed for use with the 18-1971 and 18-1978 exhaust manifold risers.

Does this gasket work with the 18-1906 manifold spacer? Yes, the EMP 27-00524 gasket is intended for use alongside the 18-1906 manifold spacer during riser installation.

Is this gasket part of a mounting kit? The 18-0897 gasket that the 27-00524 replaces is one of the elbow gaskets included in the 18-8554 mounting kit configuration.

How much does the 27-00524 exhaust riser gasket weigh? It weighs 0.042 pounds, making it a lightweight component for exhaust manifold servicing.

What is the UPC for this gasket? UPC 840080434155 identifies the EMP 27-00524 exhaust riser gasket.

Is the 27-00524 gasket an OEM or aftermarket part? It is manufactured by EMP as a direct-fit replacement for the Mercury 18-0897 elbow gasket, not an original Mercury part.

What category of engine does this gasket fit? The 27-00524 gasket is categorized for Mercruiser exhaust manifold applications.

Can I use this gasket with just one riser, or does it need both 18-1971 and 18-1978? The 27-00524 gasket works with either the 18-1971 or the 18-1978 riser, since both use the same 18-0897 gasket it replaces.

What should I check before ordering the 27-00524 gasket? Confirm your exhaust assembly uses the 18-1906 manifold spacer with an 18-1971 or 18-1978 riser, since the 27-00524 gasket is matched to that configuration.