USA Cummins 145977 5.9L Thermostat

Maintaining your engine’s optimal operating temperature is essential. Before purchasing, please verify compatibility by checking your engine serial or part number to ensure the correct fit.

Product Overview

The Cummins 145977 Thermostat is an OEM replacement designed specifically for Cummins B Series 5.9 engines found in Dodge/Cummins ISB 5.9L 24V applications from 2003 to 2007. This thermostat helps regulate coolant flow so that your engine consistently reaches its proper operating temperature while minimizing abrupt coolant cycling. Made in the USA, it represents precision, reliability, and durability. For more quality parts, visit our Cummins OEM Replacement Parts collection.

Key Features & Benefits

• OEM quality with a full manufacturer’s warranty
• Precisely calibrated for standard operating temperatures
• Engineered for Dodge/Cummins ISB 5.9L 24V engines (Cummins B Series 5.9)
• Easy installation to reduce downtime

Specifications

• Part Number: 145977
• Manufacturer: Cummins
• By KLM Performance