Maintaining and Extending the Life of Military Aircraft

 F-15 Heat Exchangers


Wall Colmonoy Aerobraze specializes in the manufacture and overhaul of Fin & Plate and Tubular Type Heat Transfer Products for F-15 Heat Exchangers.

Wall Colmonoy Aerobraze’s brazing and manufacturing expertise has resulted in increased efficiencies and significant cost savings in maintaining and extending the life of critical F-15 components for the US Air Force (USAF).

Having developed the first heat exchanger re-core procedures for the US Air Force (USAF), Wall Colmonoy has overhauled 2,500+ F-15 Tubular Type Heat Exchangers for the USAF. The overhaul process includes 100% replacement of all tubes, replacement of any non-serviceable manifold component parts, inspection and performance testing in accordance with USAF Technical Order. Original heat exchanger serial numbers are maintained for part traceability. Aerobraze achieves near 100% yield rate for the F-15 primary heat exchangers inducted for overhaul.

Since 2013 Wall Colmonoy Aerobraze has manufactured more than 500 F-15 Fin & Plate Heat Exchangers for DLA (USAF) & Foreign Military Services (FMS). Aerobraze OKC now offers an Overhaul / Re-Core workscope for the F-15 Fin & Plate Heat Exchanger. 

Read about our USAF Contract for the Re-Core of Heat Exchangers to Support the F-15 Global Fleet


Part Number
Primary Heat Exchanger - Tubular
(Overhaul / Re-Core & New Manufacture)
Primary Heat Exchanger - Fin & Plate
(Overhaul / Re-Core & New Manufacture)
Secondary Heat Exchanger
(Overhaul / Re-Core)
Heat Exchanger, Dual Core (Overhaul / Re-Core)
Heat Exchanger, Dual Core (Overhaul / Re-Core)



Primary Heat Exchanger - Tubular (Overhaul / Re-Core & New Manufacture) | P/N 189320-3-1 | NSN 1660-00-273-8669



Primary Heat Exchanger - Fin & Plate (Overhaul / Re-Core & New Manufacture) | P/N 8140-1 | NSN 1660-01-341-7295


F15 Secondary-edit

Secondary Heat Exchanger (Overhaul / Re-Core) | P/N 189340-4-3 | NSN 1660-00-544-4334



Wall Colmonoy Aerobraze’s process capabilities for heat transfer products include reverse engineering; in-house fin manufacturing; in-house metal stamping and forming; and in-house brazing and heat treating.

Heat transfer assemblies are manufactured and overhauled to meet stringent U.S. military requirements including operation under environmentally extreme conditions from -65 to 1650°F (-54 to 900°C). Corrosion durable assemblies resist cracking and failure over long-term use.

Repair, Overhaul/Re-Core, and Test

  • New Manufacture
  • Overhaul / Re-Core
  • Core Manufacture
  • Reverse Engineering

Building Cores is our Core

Capabilities include in-house manufacturing of all core details including fin material, high volume capacity for Inconel cores, and shelf stock inventory of ready-to-use replacement cores to support quick turnaround times for the Foreign Military Service Community. Overhaul / Re-Core pricing for FMS users available upon request.

  • High volume capacity for Inconel Cores
  • In-House manufacturing of all core details, including fin material
  • Overhaul / Re-Core IAW applicable USAF T.O. and USAF Approved Wall Colmonoy Aerobraze OKC Re-Core Process
  • Pricing for FMS Users Available Upon Request

Pioneers and Today’s Leading Experts
Wall Colmonoy developed the very first heat exchanger overhaul procedure for the US Air Force. Prior to that in the 1950s, Wall Colmonoy invented Nicrobraz® nickel-based brazing filler metal and pioneered high temperature furnace brazing. Even today, Nicrobraz® is used extensively in heat exchanger manufacture and overhaul.

Wall Colmonoy Aerobraze continues to develop its brazing and manufacturing expertise resulting in increased efficiencies, significant cost savings and performance improvements.


F-15 Military Aircraft – Stainless Heat Exchangers Brazed using Nicrobraz® 130


Download our F-15 Heat Exchanger Flyer here




Oklahoma City
4700 SE 59th | Oklahoma City, OK 73135
T: 405-672-1361