VIAIR T90111 Pressure Switch w/ Relay (110 PSI / 150 PSI) Tested to last over 10,000 cycles, these heavy duty, moisture resistant pressure switches come with built-in relays for longevity. These pressure switches measure 4-1/4inL x 2-1/4inW, and come with 1/8in NPT male port fitting. Leads are pre-fitted with insulated 1/4in male push-to-connect terminals. Each lead wire is clearly labeled for easy electrical hook up. Available in 2 pressure settings. Warranty: 1 Year Weight: 2 lbs. According to the manufacturer, this Part # fits all vehicles.