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Whelen M4 Linear Super-LED Lighthead
List Price $188.00
Sirennet Price:  $122.20
Brand: Whelen
Part# M4

With Options
Price: $122.20

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Product Literature
Installation Sheet

The Whelen M4 Linear Super-LED Lighthead is a compact member of the M Series family of lightheads. The M Series is the only Patented Linear-LED lightheads with a bold look to the future in fire, ambulance and rescue truck emergency lighting. Designed to stand-up to the harsh environments and standards of the industry while providing top of the line performance!


  • Surface mounted via two screws.
  • Super-LEDs provide unmatched high intensity warning, low current consumption.
  • Unique lens shape is completely illuminated with patented Linear-LED designed reflector assembly.
  • Available with color (same as LEDs) or clear lens.
  • Lens and reflector are a sealed assembly.
  • Mounting screws are located outside of the sealed lens/reflector assembly eliminating water infiltration.
  • Replaceable light engine is accessed from the rear of the lens/reflector assembly.
  • Rear gasket ensures that the lighthead and optional flange does not touch the vehicle's surface.
  • Updated design allows for faster and easier installation.
  • M4 has 129 flash patterns with 65 being California Title XIII compliant.
  • Choose from Solid, Left/Right, Top/Bottom, In/Out, or Diagonal sequencing.
  • Meets KKK 1822F, NFPA 1901, SAE and EC65 specifications.
  • Hi/Low intensity function included (Violet wire).
  • Hard coating on lens resists scratches, chemical and corrosive damage.
  • Current Draw @ 12.8 VDC: 1.5 (Peak*), 0.6 (Average). * in steady on mode
  • Dimensions (approximate): 3-3/8" (86mm) H x 5-1/2" (138mm) W x 1-3/8" (35mm) D.

Whelen 5 Year Warranty

Part Number(s):  M4A, M4AC, M4B, M4BC, M4R, M4C, M4RC

Whelen M4 Linear Super-LED Lighthead
Your Price: $16.50
part# M4FC

This Chrome plastic flange is specifically designed for use with the M4 Linear Super-LED Lighthead.

Whelen M4 Linear Super-LED Lighthead
Your Price: $46.15
part# M4CT15B

This Whelen M4 Fog Light Mount Kit is specifically designed for mounting Whelen M4 series lightheads in the fog light position on a 2015-2016 Chevy Tahoe.