B-1104 – Hartzell Propeller Governor Gasket
Available now on the Airparts.aero Marketplace.
Overview
The B-1104 Hartzell Propeller Governor Gasket is an OEM-grade sealing component designed specifically for use in Hartzell propeller governor assemblies. This precision-cut gasket ensures a leak-proof seal between the governor base and engine accessory case, maintaining critical oil pressure integrity required for precise propeller pitch control in piston aircraft.
Made from high-compression aviation gasket material, the B-1104 resists deformation, oil saturation, and temperature cycling, providing reliable sealing under vibration and high-pressure lubrication systems. It is a mandatory replacement item during governor installation, overhaul, or removal, and is commonly included in governor gasket kits approved for Lycoming and Continental engines using Hartzell governors.
Key Features
- OEM-Compatible Fit: Matches Hartzell governor footprint for seamless replacement.
- Oil and Temperature Resistant: Maintains integrity in high-temp, oil-saturated environments.
- Leak-Proof Sealing: Prevents loss of engine oil pressure critical to propeller pitch control.
- Durable Construction: Made from aircraft-grade composite gasket material.
- Maintenance Essential: Required component in Hartzell governor installations and inspections.
- FAA-Approved Usage: Complies with general aviation maintenance standards for sealing hardware.
Technical Specifications
- Part Number: B-1104
- Manufacturer: Hartzell or certified distributor
- Component Type: Propeller Governor Gasket
- Material: High-density nitrile/cellulose composite or similar aviation gasket stock
- Temperature Resistance: Engine environment rated
- Application: Prop governor mounting flange
- Certification: OEM or FAA-PMA equivalent (verify supplier documentation)
- Used With: Hartzell propeller governors on Lycoming and Continental engines
Aircraft Compatibility
Used in:
- Cessna, Piper, Beechcraft, and Mooney aircraft
- Lycoming O-360, IO-540, AEIO-540, and TIO-540
- Continental IO-520, IO-550 series engines
- Any aircraft using Hartzell governors requiring flange seal B-1104
Verify IPC, engine governor model, and AMM for exact compatibility. Installation by a certified technician is required.
Applications
- Propeller Governor Installation or Removal
- Scheduled Overhaul or Inspection
- Oil Leak Repair at Governor Base
- STC or Field Approved Governor Swaps
Why Choose the B-1104 Gasket?
- Precision Fit & Function: Maintains correct spacing and seal integrity for prop control systems.
- High-Reliability Material: Withstands pressure pulsation and mechanical load cycles.
- Mandatory in Maintenance: Required for FAA-compliant governor installation.
- Proven Across Fleets: Used by certified repair stations, flight schools, and owner-operators.
Order Your B-1104 Governor Gasket Today
Seal your governor with precision—ensure pressure integrity and performance.
Order the B-1104 Propeller Governor Gasket now from Airparts.aero — your trusted supplier for certified aircraft components, fast shipping, and technical support.
The B-1104 Hartzell Governor Gasket is a mission-critical sealing component for maintaining proper engine oil pressure at the propeller governor flange, which directly influences pitch control and RPM stability. Whether you’re reinstalling a factory-new unit or completing an overhaul, this gasket must be replaced to preserve oil retention and system airworthiness. At Airparts.aero, we deliver trusted Hartzell-compatible components to aviation technicians, flight departments, and independent aircraft owners around the world.
Always torque and install according to manufacturer instructions. Use in conjunction with approved sealants where specified.
