These are authentic GE 4416 PAR‑36 sealed beams — the correct 12‑volt replacement bulbs used in many vintage emergency lighting systems, including Federal Signal TwinSonic, AeroTwinSonic, Twin BeaconRay and other classic rotators.
Details:
• Quantity: 4 bulbs
• Model: GE 4416
• Voltage: 12V
• Type: PAR‑36 sealed beam
• Application: Federal Signal, Dietz, Unity, vintage beacons, rotators, and restoration projects
• Condition: New – Tested and working (no broken filaments)
Why These Matter
The GE 4416 is the original‑spec high‑output sealed beam used in many 1960s–1990s emergency light bars. These are getting harder to find, and collectors prefer genuine GE units for brightness, beam pattern, and authenticity.
Shipping
Bulbs are packed with extreme care to prevent filament damage during transit.
If you need colored 4416s (red, blue, amber, green) or additional sets, feel free to reach out.

This is the preferred original GE 4416‑Blue sealed beam — complete with the GE logo centered on the lens, just like the factory units. Perfect for accurate restorations and period‑correct emergency lighting.
Details
• Model: GE 4416‑Blue
• Size: 4.5″ PAR‑36
• Beam Type: Spotlight with screw‑terminal connectors
• Voltage: 12‑Volt systems
• Lens Color: Factory Blue
• Condition: Tested and working (no broken filament)
Compatibility
Fits virtually all vintage rotating and oscillating emergency lights, including:
• Federal Signal
• Code 3
• Dietz, Unity, and most others
Works in all 12‑Volt rotating and fixed lights and is correct for many classic light bars from the 1960s–1990s.
Why Collectors Want This Bulb
The GE 4416‑Blue is a harder‑to‑find original‑spec sealed beam, valued for its brightness, beam pattern, and authentic blue tone. The GE‑logo lens makes it especially desirable for restorations where accuracy matters.
Shipping
Packed with extreme care to protect the filament and lens during transit.