TPX0004 Peterbilt Expansion Valve (1995–2010)

Year Coverage

TPX0004 is an expansion valve for Peterbilt trucks, model years 1995 to 2010.

It replaces 10 OEM and aftermarket numbers, among them 3093407, 450020, 757035. Searching any one of them will find this part.

On expansion valves the tonnage rating and the port type have to match the system. A valve of the wrong capacity will cool poorly even when it bolts on.