15550142 - Riser Half Clamp for Cessna 172 Aircraft

1555014-2 – Riser Half Clamp for Cessna 172 Aircraft

Available now on the Airparts.aero Marketplace.

Overview

The Textron Aviation 1555014-2 is a genuine OEM riser half clamp, a flight-critical component of the exhaust system for various Cessna 172 and 152 aircraft. This is not a complete clamp, but one of two identical halves that, when bolted together, form a complete assembly to securely fasten the exhaust risers. Engineered from high-temperature, corrosion-resistant steel, this clamp is designed to support the exhaust system against constant, high-frequency engine vibration, preventing stress cracks from forming in the riser tubes and ensuring the integrity of the entire exhaust installation.

Key Features

• Vibration Support & Damping: Its primary function is to rigidly support the exhaust risers, preventing the intense vibration from the engine from being concentrated at the cylinder head flanges, which is a common location for fatigue cracking.
• High-Temperature Steel Construction: Fabricated from a high-strength, temperature-resistant steel alloy (typically 321 CRES or similar). This material is chosen for its ability to maintain its strength and resist corrosion and heat fatigue at the extreme temperatures of the exhaust system.
• Precision Stamping: Each half clamp is precision stamped to the exact curvature and dimensions required to provide a perfect, snug fit around the exhaust riser tubes, ensuring uniform clamping force.
• Two-Piece Design: Allows for easy installation and removal during maintenance without having to disconnect the entire exhaust system. Two halves are required to form one complete clamp assembly.
• Genuine Textron OEM Part: As a genuine factory component, it guarantees conformance to the exact material specifications and dimensional tolerances required by the aircraft's original Type Certificate, ensuring a safe and airworthy repair.

Technical Specifications

• Part Number: 1555014-2
• Component Type: Exhaust Riser Clamp Half
• Quantity Required: 2 per complete clamp assembly
• Material: High-Temperature, Corrosion-Resistant Steel Alloy
• Application: Secures exhaust riser tubes to support brackets or to each other.
• Superseded/Associated P/N: Often associated with or superseded by P/N 0750161-25 in certain applications.
• Certification: FAA Production Approval

Aircraft Compatibility

The 1555014-2 half clamp is the specified OEM part for the exhaust systems on some of the most popular training and general aviation aircraft ever built. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.

• Primary Aircraft Models:
  • Cessna 172 Skyhawk (including R and S models)
  • Cessna 152

Applications

The 1555014-2 is a flight-critical component essential for exhaust system integrity:

• Exhaust System Maintenance: A mandatory inspection item during every annual and 100-hour inspection. Clamps are inspected for cracks, corrosion, and security.
• Preventing Exhaust System Failures: Properly installed clamps are the primary defense against vibration-induced cracking of the exhaust riser tubes.
• Component Replacement: Replaced whenever found to be cracked, distorted, or heavily corroded.

Why Choose 1555014-2?

A cracked or failed exhaust system component can lead to a dangerous in-flight fire, carbon monoxide contamination of the cabin, or damage to other firewall-forward components. The 1555014-2 clamp is an inexpensive but absolutely vital part of preventing such failures. Using a genuine Textron Aviation OEM part ensures that the clamp is made from the correct high-temperature alloy and is shaped correctly to provide a secure fit without creating stress points. For a component this critical to safety, there is no substitute for certified OEM hardware.

Order Your 1555014-2 Riser Half Clamps Now

Ensure the safety and integrity of your aircraft's exhaust system with genuine Textron Aviation hardware. Visit Airparts.aero to order your 1555014-2 riser half clamps today.

The exhaust system of a reciprocating engine is subjected to a violent combination of thermal cycling and multi-axis vibration. The 1555014-2 half clamp is designed to be a rigid support node in this dynamic environment. By securely fastening the riser tubes, it effectively shortens the unsupported length of the tube, which dramatically increases its natural resonant frequency. This change in frequency moves it out of the range of the engine's primary vibrational frequencies, thereby preventing harmonic resonance—a phenomenon that can cause rapid and catastrophic fatigue cracking in the metal. The proper installation and torque of the hardware securing these clamp halves is therefore fundamental to the longevity of the entire exhaust system.

Note: This is a flight-critical component. Installation must be performed by a certified A&P mechanic. Two clamp halves (P/N 1555014-2) and new, specified hardware (bolts and nuts) are required to create one complete clamp assembly. Always inspect exhaust components for cracks and security in accordance with the aircraft's maintenance manual.Alternate Part number:   0750161-25, A0750161-25

ELIGIBILITIES

• Cessna 172R and 172S
  

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