Tempest AGB-20862-PMA
The Tempest AGB-20862 (McCauley OEM B-20862) is an FAA-PMA overhaul gasket cover for McCauley applications.
- Helps prevent external oil leakage by restoring the intended seal at the cover or head interface.
- Supports consistent governor operation by reducing the chance of internal bypass caused by a damaged, hardened, or compressed gasket.
- Often replaced during overhaul and line service whenever the joint is disturbed, since gasket compression set can affect resealing.
This gasket supports aviation maintenance and overhaul workflows where OEM part number cross-referencing prevents misordered sealing parts that do not match the intended thickness or profile.
Installation notes
Refer to your aircraft and governor maintenance manual for complete installation procedures and torque values.
- Clean and inspect both mating faces for nicks, warpage, and old gasket residue before installing the replacement gasket.
- Use the torque value and tightening pattern specified in approved maintenance data to avoid distortion and uneven compression.
Applications and fitment
Used on McCauley governor assemblies where OEM B-20862 is specified. Confirm compatibility by matching the OEM part number and verifying governor model and serial number applicability in approved maintenance data.
Tempest AGB-20862 is the direct replacement for OEM B-20862. Match the OEM part number and confirm applicability by governor model and serial number in the approved maintenance data.
Pilot John International supplies Tempest PMA propeller governor components to propeller overhaul shops, FBOs, MROs, and aviation maintenance technicians supporting aircraft maintenance and ground support.
| General Information | |
|---|---|
| Part # | AGB-20862 |
| 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-20862 |
| System | McCauley propeller governor, primary housing sealing surface |
| Tempest P/N | AGB-20862 |
| Type | Gasket, head or cover interface |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 421C |
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QUESTIONS & ANSWERS
Tempest AGB-20862 is a direct FAA-PMA replacement for McCauley P/N B-20862. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGB-20862 Head Gasket is designed for use in aircraft equipped with McCauley model DCFUS290D9 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGB-20862 Head Gasket seals internal governor chambers to maintain oil separation and pressure control. Proper sealing prevents internal leakage and pressure loss.
PJi offers the Tempest AGB-20862 as an FAA-PMA-approved replacement for the McCauley B-20862 head 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.
