Tempest AGB-20371-PMA
The Tempest AGB-20371 (McCauley OEM B-20371) is an FAA-PMA overhaul gasket cover for McCauley applications.
- Helps prevent external oil leaks by restoring the intended seal at the cover interface.
- Supports consistent governor performance by reducing the risk of internal bypass or pressure loss caused by a torn, hardened, or compressed gasket.
- Common replacement during disassembly and overhaul because gasket compression set and surface damage can occur with service cycles.
This gasket supports aviation maintenance and overhaul workflows where OEM part numbers are used to confirm exact interchangeability.
Installation notes
These notes are general guidance only; always refer to the approved maintenance and overhaul manual for complete installation procedures.
- Ensure both mating faces are clean and flat. Remove old gasket residue without scratching the sealing surface.
- Use the approved torque value and tightening pattern to avoid cover distortion and uneven compression.
Applications and fitment
Used on McCauley governor assemblies where OEM B-20371 is specified. Confirm eligibility by matching the OEM part number and reviewing governor model and serial number applicability in approved maintenance data.
Tempest AGB-20371 is the direct replacement for OEM B-20371. Match the OEM part number and confirm applicability by governor model and serial number in the approved maintenance data.
Pilot John International offers Tempest PMA propeller governor parts for propeller overhaul shops, FBOs, and aviation technicians to support aircraft maintenance and ground support.
| General Information | |
|---|---|
| Part # | AGB-20371 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 3 x 3 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | B-20371 |
| System | McCauley propeller governor, cover sealing surface |
| Tempest P/N | AGB-20371 |
| Type | Gasket, cover |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 210 |
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QUESTIONS & ANSWERS
Tempest AGB-20371 is a direct FAA-PMA replacement for McCauley P/N B-20371. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGB-20371 Cover Gasket is designed for use in aircraft equipped with McCauley model C290D4 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGB-20371 Cover Gasket seals the governor housing to prevent oil leakage, preserving the hydraulic pressure required for accurate blade pitch control and safe governor operation. Maintaining a reliable seal under vibration and thermal cycling helps ensure consistent propeller speed regulation and reduces the risk of oil-related performance issues.
PJi offers the Tempest AGB-20371 as an FAA-PMA-approved replacement for the McCauley B-20371 cover gasket. View our full selection of Tempest propeller governor parts to find the correct component for your application.
For a deeper look at how propeller governors work, why proper maintenance matters, and how to identify compatible replacement components, refer to our Ultimate Guide to Aircraft Propeller Governor Maintenance.
