PAI Industries, Inc. Thermostat Part No: 181887

$33.41

The PAI Industries 181887 Thermostat is engineered to open at 180 °F (82 °C), designed for a wide range of Cummins engines including N14, ISX, M11, L10, B, ISM, ISB, and QSB models. Built to meet or exceed OEM specs, it offers reliable thermal control and plug-and-play replacement. Backed by PAI’s 2-year unlimited-mileage warranty and sold by Wofford Truck Parts, it’s a durable solution for dependable engine cooling across various heavy-duty platforms.

Specifications

The PAI 181887 Thermostat is a high-performance, non-vented coolant thermostat calibrated to open at 180 °F (82 °C). It serves a broad range of Cummins engine families—including N14, ISX, M11, L10, B, ISM, ISB, and QSB. This thermostat is a direct replacement for OE part 4336659 and cross-references multiple Cummins OEM numbers such as 2882757, 3335550, 4318197, 4952204, and 4973373. With precise manufacturing, rigorous testing, and a 2-year unlimited-mileage PAI warranty, it ensures consistent engine temperature regulation and reliable fitment for demanding heavy-duty truck applications.

Weight

0.54

Compatibility

Freightliner (FLD / Classic) L10, M11, N14, ISX (1980s–2010s)
Kenworth (W900, T800) L10, N14, M11 (1980s–2000s)
Peterbilt (359, 379) N14, ISX (1990s–2000s)
International (9000, 9200, 9400) L10, N14 (1980s–2000s)
Mack (CH Series, others) L10, N14, M11 (1990s)
Vocational / Owner-Operator Builds M11, ISX (1990s–2010s)