4336659 181887 82℃ 180℉ Thermostat for PAI Cummins N14 ISX M11 ISM

Product Overview

This aftermarket replacement thermostat is intended for Cummins N14, ISX, M11, and ISM engine applications and cross-references part number 4336659 and PAI reference 181887. A thermostat regulates coolant flow according to temperature to support the engine cooling system and normal temperature regulation.

Key Features & Performance

• Regulates coolant flow within the engine cooling system based on temperature.
• Specified with an 82℃ (180℉) operating temperature.
• Cross-references part number 4336659.
• References PAI 181887 for part-number comparison.
• Used when servicing or replacing the corresponding engine thermostat.

Fitment & Compatibility

• for Cummins N14 applications
• for Cummins ISX applications
• for Cummins M11 applications
• for Cummins ISM applications

Common Uses

• Replacing a worn, damaged, or malfunctioning thermostat.
• Routine maintenance of the engine cooling system.
• Servicing coolant temperature regulation after the existing thermostat has failed.

Technical Specifications

• Product Type: Engine thermostat
• Part Number(s): 4336659
• Reference Number(s): PAI 181887
• Engine Application(s): Cummins N14, ISX, M11, and ISM
• Temperature Rating: 82℃ (180℉)

Frequently Asked Questions

Q: What does this thermostat do? A: It regulates coolant flow according to engine temperature as part of the normal cooling system.

Q: How should fitment be verified? A: Compare the complete existing part number, including 4336659 or PAI 181887 where applicable, with the complete engine model designation such as N14, ISX, M11, or ISM before purchase.

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.