Replacement Light Bulb for 4557 Aircraft - 28 Volts 1000 Watts 3 Screw Terminals

Replacement for the 4557 aircraft lamp, this PAR64 incandescent unit operates at 28 volts with a 1000 watt rating and delivers a 25-hour service life in aircraft lighting applications. The three screw terminal base ensures direct compatibility with existing fixtures designed for this configuration.

Key Features & Benefits

• PAR64 shape for targeted beam applications in aircraft environments
• 28 volt operation matches specified aircraft electrical systems
• 1000 watt output provides the required illumination level
• 25 hour rated life for scheduled maintenance intervals
• Three screw terminal base matches original equipment connections

Product Specifications

• Volts: 28
• Watts: 1000
• Shape: PAR64
• Life: 25 hours
• Base: 3 Screw Terminals

Replacement Compatibility

fits aircraft lighting fixtures that accept the 4557 lamp with PAR64 shape and three screw terminal base.

Discover the Perfect Replacement

Browse the available options and select the exact replacement part needed for your aircraft lighting system to restore original function.

During the checkout process, you can choose from expedited services such as overnight delivery to standard ground shipping. We aim to ensure your order is delivered promptly and reliably, wherever you are.

All returns must be made within 30 days of purchase with the invoice. (After 30 days, Interlight credit only, Minimum 25% restocking fee, no returns after 60 days, special items order just for you are not returnable.)

At Interlight, your satisfaction is our priority. We offer a 30-day money-back guarantee on eligible products, provided they are returned in resalable condition with the original invoice.