ISSPRO

Lead Wire High Temp 10 Foot Pyro Gauge To Engine ProbeAchieve accurate readings with our high temp extension lead wire. Ideal for ring terminal thermocouples, it ensures precision in challenging...

5000-55000 Lb. Axle Load GaugeKnow how much weight your axles are holding with this aftermarket 2 1/16 inch Isspro axle load gauge. It features a black face with white numbers, a display that ranges...

200 PSI Mechanical Fuel Pressure GaugeAt 4 State Trucks, we offer Isspro mechanical fuel pressure gauges with a range of 10-200 PSI. This gauge features a black face with white numbering. It fits...

100 PSI Mechanical Fuel Pressure GaugeFind aftermarket Isspro mechanical fuel pressure gauges with a range of 5-100 PSI for your big rig at 4 State Trucks. This gauge has a black face with white...

15 Foot High Temperature Lead Wire For Pyrometer Hook Up, Gauge To Exhaust ProbeFind aftermarket Isspro high-temperature lead wire at 4 State Trucks. This 15-foot universal high temperature extension...

Round Steel Fuel Sender Plate * High Quality Fuel Sender Plate* Round Steel Plate* With Sender Hole Cut In Center* For A Block Off Plate To Cover The Sender Hole In A Fuel Tank Use 09-060325* Sold...

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...

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...

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...