Woodward 1355-168, 41/64 ID X 3/32 CS Unfeather Valve O-ring - Tempest PMA
Tempest AG1355-168-PMA
The Tempest AG1355-168 (Woodward OEM 1355-168) is an FAA-PMA overhaul 41/64 id x 3/32 cs unfeather valve o-ring for Woodward applications.
- Helps maintain internal oil sealing so governor control pressure can do its job, supporting responsive RPM control and predictable unfeathering behavior.
- Preformed packing geometry supports consistent placement and reduces the chance of twisting or pinching compared with improvised sealing methods.
- Supports reliable maintenance outcomes by matching the intended dimensional spec used in OEM governor configurations.
This seal supports aircraft propeller governor maintenance, including troubleshooting issues tied to oil leakage, sluggish unfeather response, or unstable governing that can be influenced by internal sealing condition. PJi® supports aviation maintenance professionals with OEM-cross referenced parts that align with how governor components are identified in manuals and parts catalogs.
Installation notes
Refer to the applicable governor and engine maintenance manual for full installation procedures, torque values, and inspection requirements.
- Inspect the groove and sealing surfaces for nicks, corrosion, or embedded debris. Any damage can cause leakage even with a new seal.
- Use an approved lubricant and installation method per the governor maintenance manual to avoid cutting the seal during assembly.
- After installation, perform leak checks and functional checks per approved maintenance data.
Applications and fitment
Eligibile for installations where Woodward model A210800 reciprocating engine speed governors are installed, including multiple Beechcraft Bonanza and Baron variants. Other suppliers also associate OEM 1355-168 with turbine governor installations, so always confirm by the specific governor model, dash number, and parts list.
| Aircraft | Propeller Governor Model |
|---|---|
| Beechcraft Bonanza 95-C55 / 55A / D55 / E55 | Where Woodward A210800 reciprocating engine speed governors are installed |
| Beechcraft Baron 58 / 58A / 58P / 58TC | Where Woodward A210800 reciprocating engine speed governors are installed |
Confirm compatibility by matching OEM 1355-168 and reviewing the approved governor documentation for your specific installation, including any unfeathering system notes and seal replacement criteria.
Tempest AG1355-168 is the direct replacement for OEM 1355-168. Confirm applicability by governor model and serial number, and match the seal size requirements in the approved maintenance data.
Pilot John International stocks Tempest PMA propeller governor parts for propeller overhaul shops, MROs, FBOs, and A&P mechanics supporting aircraft maintenance and ground support operations.
| General Information | |
|---|---|
| Part # | AG1355-168 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 0.8 x 0.8 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA |
| Material | Heat and oil resistant elastomer (verify exact compound requirements in the applicable governor manual) |
| Nominal cross section | 0.087 in (3/32 in) |
| Nominal internal diameter | 0.644 in (41/64 in) |
| OEM P/N | 1355-168 |
| Tempest P/N | AG1355-168 |
| Type | Preformed packing, O-ring style seal (unfeathering valve / governor oil sealing application) |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Hawker Beechcraft | 58 - Baron , 95-C55 - Baron , 95-C55A - Baron |
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QUESTIONS & ANSWERS
Tempest AG1355-168 is a direct FAA-PMA replacement for Woodward P/N 1355-168. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AG1355-168 Unfeathering Valve O-Ring is designed for use in aircraft equipped with Woodward model A210800 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AG1355-168 Unfeathering Valve O-Ring seals the unfeathering valve interface, maintaining oil pressure and preventing leakage during unfeathering operations. Reliable sealing of the unfeathering valve helps ensure proper propeller response and system performance when transitioning out of a feathered condition.
PJi offers the Tempest AG1355-168 as an FAA-PMA-approved replacement for the Woodward 1355-168 unfeathering valve O-ring. 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.
