S2087-1 – Textron Aviation OEM High-Temperature Exhaust System Shock Mount
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Overview
The S2087-1 is a flight-critical, genuine Textron Aviation Original Equipment Manufacturer (OEM) high-temperature shock mount. This is not a standard instrument panel mount; it is a highly specialized vibration isolator engineered specifically to support and isolate the engine exhaust system on a wide range of Cessna piston aircraft. Its primary function is to flexibly suspend the hot, vibrating muffler and tailpipe assembly, damping the engine's vibrations and preventing them from being transmitted to the airframe, which would otherwise cause fatigue cracking in both the exhaust components and the surrounding structure.
The key to this component's performance is its specialized elastomeric element, which is manufactured from a high-temperature silicone compound. This material is designed to retain its flexibility and damping characteristics in the extreme thermal environment of the engine compartment, an application where standard rubber mounts would rapidly fail.
Key Features
Genuine Textron Aviation OEM Part: Guarantees the part is the factory-specified and fully certified component, ensuring correct performance and airworthiness.
High-Temperature Silicone Elastomer: The central damping element is fabricated from a specific silicone compound, engineered to withstand the high radiant and convective heat from the engine and exhaust system without hardening or degrading.
Designed for Exhaust Systems: Specifically engineered to support the weight and damp the unique vibrational frequencies of an aircraft's exhaust system.
Vibration and Shock Damping: Absorbs engine vibration, protecting the exhaust system tubing, welds, and slip joints from fatigue failure and cracking.
Corrosion Resistant Steel Components: The metallic hardware components of the mount are made from Corrosion Resistant Steel (CRES) for strength and longevity in the harsh engine compartment environment.
Flight-Critical Safety Component: A failed exhaust mount can lead to a detached exhaust pipe, creating a severe fire hazard and a risk of carbon monoxide entering the cabin.
Technical Specifications
Part Number: S2087-1
Component Type: High-Temperature Vibration Isolator / Shock Mount
OEM Authority: Textron Aviation (Cessna)
Application: Engine Exhaust System Hanger/Support
Elastomer Material: High-Temperature Silicone (per Textron specification).
Metal Material: Corrosion Resistant Steel (CRES).
Maximum Operating Temperature: Per Textron specification, suitable for engine compartment and exhaust system proximity.
Governing Specification: Textron Aviation Engineering Drawing S2087.
Aircraft Compatibility
This OEM high-temperature shock mount is the standard component for the exhaust systems on a vast fleet of Cessna's most popular single-engine aircraft.
Primary Textron Aviation Platforms:
Cessna 172
Cessna 180, 182, 185
Cessna 206, 207
Cessna 210
And other piston models specifying this part.
Note: Verification of applicability is the absolute responsibility of the installer. The aircraft's current Illustrated Parts Catalog (IPC) for its specific serial number is the final and absolute authority for confirming part number eligibility.
Applications
Sole Application: To be installed as part of a set to flexibly support the aircraft's exhaust muffler and tailpipe assembly from the engine mount or airframe, isolating it from vibration and allowing for thermal expansion.
Why Choose S2087-1?
The environment surrounding an aircraft exhaust system is one of the most hostile on the airframe. The S2087-1 shock mount is not an ordinary rubber part; it is an engineered component made from a specific silicone elastomer that can survive these extreme temperatures. Substituting a standard, black rubber instrument panel mount in this location is a catastrophic error that will lead to the mount melting or burning away in a single flight. This will cause the hot exhaust pipe to detach, risking an in-flight fire. Only the genuine OEM part is certified for this critical application.
The S2087-1 shock mount's ability to function in the high-heat exhaust environment is a direct result of the material science of its silicone elastomer. Unlike organic rubbers (like natural rubber or neoprene) which have a carbon-carbon polymer backbone, silicone rubber is an inorganic polymer. Its backbone is composed of alternating silicon and oxygen atoms (-Si-O-), a structure known as a siloxane chain. The bond energy of the Si-O bond is significantly higher than that of a C-C bond, which gives silicone its inherently superior thermal stability. This allows the S2087-1's silicone element to retain its elasticity, flexibility, and damping properties (hysteresis) at continuous operating temperatures that would cause the polymer chains in organic rubbers to undergo scission and pyrolysis (thermally decompose), leading to hardening, cracking, and complete failure of the mount.
Note: This is a flight-critical component. Exhaust shock mounts are wear items that degrade from constant exposure to heat, vibration, and stress. They must be inspected at every annual and 100-hour inspection for cracking, hardening, deformation ("sagging"), or contamination from oil. It is highly recommended to replace all exhaust mounts as a complete set to ensure uniform support and prevent overloading of the remaining mounts. Installation must be performed by a certified A&P mechanic.
Documentation
All technical data, installation procedures, and inspection criteria for the S2087-1 shock mount are proprietary to Textron Aviation. This information is contained within the official Maintenance Manual and Illustrated Parts Catalog for the applicable aircraft model. No public-facing documentation is available.