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4" Overall diameter
Control box: 2-5/8″ long x 3-1/8″ wide x 1-¼” high
2 grommets for breathers
Bolts have hex heads and external tooth lock washers
Mounting arm/bracket is 2" long from the mounting face to the centre of the mirror head stud
Universal Electric Brake Vacuum Pump Kit 12 Volt Oldsmobile 4" Overall diameterPerformance orientated engines with aggressive cam profiles will often have low vacuum at idle, this can cause a hard brake pedal due to the brake booster not having adequate vacuum. Calflows Electric Brake Vacuum Pump Kit is a compact solution to rectifying low vacuum, ensuring a reliable pedal feel. With the included vacuum pressure switch, the pump will only operate when necessary. Included vacuum switch activates at 18inHg, and shuts off at 22inHg