Isuzu 4JJ1 Thermostat 85C Excavator Engine

Other Engine Parts
January 14, 2026
Video Description:
We tested it—see the highlights and what to expect in real operation. This video provides a detailed walkthrough of the 8-98017027-0 85° Thermostat for Isuzu 4JJ1 engines and Hitachi excavators. You'll see how this component regulates coolant flow to maintain optimal engine temperature, learn about its high-temperature resistant construction, and watch a demonstration of its straightforward installation process.