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'15-21 GMC Yukon/Yukon XL
SAK61AD: 2017-2025 Ford F-250/350/450/550
No need for extra warning lights as the Atomic LED's have the ability to flash multiple warning patterns with the flip of a switch
Flasher Compatibility – Designed to work with any name-brand external flasher
Whelen SA315 Projector Siren Speaker with Mount Whelen SA315 New Projector Siren Speaker Mount (Choose Your Mount):SAK57 '15-21 GMC Yukon/Yukon XLSmaller size speaker with full size performance will mount in more locations than ever before. The SA315 installs easily and delivers traffic clearing warning where it's needed: down and in front of your vehicle. This projector series sirens from Whelen feature 100 watt output and can fit behind most grills. They are only about 3 inches deep and offer a rugged Nylon Composite with a Non corrosive aluminum housing. Please note: Whelen has changed the