TOOLS

Sending UnitWe offer top of the line aftermarket Isspro sender units for your big rig. This sending unit is accurate in measuring the amount of fuel in the fuel tank and communicates the fuel level to the fuel gauge on the dashboard. It comes with a...

Signal Generator Drive TipAt 4 State Trucks we offer aftermarket Isspro drive tips for signal generators. This drive tip features a .203 tang and comes with a warranty against defects in materials and workmanship. Isspro is a trusted brand for any and...

Signal Generator Drive TipAt 4 State Trucks, we offer aftermarket Isspro drive tips for signal generators. This drive tip features a .187 tang and comes with a warranty against defects in materials and workmanship. Isspro is a trusted brand for any and...

Oil Temperature SenderFind aftermarket Isspro oil temperature senders for your big rig with a warranty against defects in materials and workmanship at 4 State Trucks. Isspro is a trusted brand for any and all gauges, for over 60 years they have been a...

Oil Temperature SenderEnsure accurate readings with this high quality Isspro oil temperature sender. It is sold individually and is backed with a warranty against defects in materials and workmanship. Isspro is a trusted brand for any and all gauges, for...

Magnetic Pick Up SenderWe offer top of the line aftermarket Isspro magnetic pick up senders for your big rig. This sender is to be used with Isspro speedometers and tachometers. It features wire lead connectors and comes with a warranty against defects...

Gauge Snubber Use On Fuel PSI Manual Gauge4 State Trucks offers this highly effective gauge snubber that is used to smooth out the pressure fluctuations on a fuel PSI manual gauge. It comes with a warranty against defects in materials and workmanship...

Exhaust Bung For Pyro ProbeAt 4 State Trucks we offer exhaust bungs for pyro probes that come with a warranty against defects in materials and workmanship. Isspro is a trusted brand for any and all gauges, for over 60 years they have been a pinnacle of...

Pyro Sender With Type K Thermocouple & 1/4 Inch NPTF MountingWe offer top of the line pyrometer senders with 2.25 inch probes for your big rig. This sender comes with a warranty against defects in materials and workmanship. Isspro is a trusted brand for...

Air Line Fitting * High Quality Fitting* 5/32 x 1/8 Inch* Sold Individually* Warranty On Air Line Fitting Against Defects In Workmanship & Material From Date Of Purchase***High Quality Aftermarket Replacement Part (Not OEM)***

Male Brass Connector, 5/32 x 1/16 InchThis brass male airline fitting is for applications with nylon air brake tubing. It is designed to withstand temperatures between -45 degrees and 212 degrees. It is intended for applications using more than 150 psi. ...

Air Line Union * High Quality Union* 1/2 Inch * Sold Individually* Warranty On Air Line Union Against Defects In Workmanship & Material From Date Of Purchase***High Quality Aftermarket Replacement Part (Not OEM)***