SAME DAY SHIPPING ON 99% OF ORDERS 
When the lamp in your emergency vehicle lightbar, beacon, and warning signal assembly reaches end of life, this compatible replacement for the 34-0850839-00 by WHELEN ENGINEERING gets you back up and running. It matches the original at 450W, 28V, PAR46 form factor with a screw terminal base for a direct fit.
This lamp restores proper beam alignment and light output to the vehicle lighting assembly, supporting safe visibility in low-light, rain, fog, and nighttime driving conditions. Its filament and capsule are designed to handle the vibration and thermal cycling of an automotive environment. It provides the light color and intensity drivers depend on for clear road illumination.
Key Features & Benefits
- Fits standard screw terminal base sockets for straightforward replacement.
- Clear Finish PAR46 envelope for optimal light distribution.
- Operates at 450W, 28V to match standard low-voltage circuits.
Product Specifications
- Wattage: 450W
- Voltage: 28V
- Base Type: SCREW TERMINALS
- Bulb Shape: PAR46
- Finish: Clear Finish
- Condition: Brand New
Common Applications
This halogen lamp is commonly used in:
- Automotive low beam and high beam headlamps
- Daytime running light assemblies
- Off-road and utility vehicle auxiliary lights
- Side marker and license plate lamps
- Driving light and fog light assemblies
- Volts: 28
- Watts: 450
- Base: SCREW TERMINALS
- Shape: PAR46
- Life: 50
- MOL: 4.750
- Bulb Finish: CLEAR
- AMPS: 16.071
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.