Please confirm the 28113 weld boss’s compatibility with your aircraft using these documents:
Product Details:
- Weld to exhaust tube to use screw-in probes
- Dimensions: 7/16″ 20 UNF thread
- Replaces: MCI-106-53
- Approved by: EASA-STC (European Union), FAA-PMA, FAA-STC (Modification Article)
- Manufactured by Alcor, Inc.

46000-7 Alcor EGT Dual Gauge 3 1/8" True Temp Meter (Type K) | McFarlane Aviation 460007 