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Isuzu 4JJ1 Thermostat 85C Excavator Engine

Other Engine Parts
January 14, 2026
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Brief: 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.
Related Product Features:
  • Precisely regulates coolant flow to maintain the engine's optimal 85℃ operating temperature.
  • Engineered with high-quality, heat-resistant materials for superior corrosion and high-temperature resistance.
  • Designed for stable and reliable performance under long-term, high-load operating conditions.
  • Features a direct-fit design that perfectly matches original equipment interfaces for easy installation.
  • Specifically compatible with Isuzu 4JJ1 series diesel engines and multiple Hitachi excavator models.
  • Improves combustion efficiency and overall engine performance through precise temperature control.
  • Suitable for routine maintenance and replacement applications in industrial and construction equipment.
  • Available with multiple replacement part numbers including 8980170271 and 8980170272 for easy sourcing.
FAQs:
  • Which engine models is this thermostat compatible with?
    This thermostat is specifically designed for Isuzu 4JJ1 series engines, including models 4JJ1, 4JK1, 4JJ1-XYSA03, and 4JJ1-XYSA01, as well as numerous Hitachi excavator models such as ZX110-3, ZX130-3, ZX160LC-3, and ZAXIS series excavators.
  • What is the operating temperature of this thermostat?
    The 8-98017027-0 thermostat operates at 85℃, which is the optimal temperature for maintaining efficient engine performance in Isuzu 4JJ1 series engines.
  • Can you provide cross-reference information for OEM part numbers?
    Yes, we support original part interchange. This thermostat is compatible with replacement part numbers 8980170271, 8-98017027-0, 8980170271, and 8980170272. Please provide your original part number for verification before ordering.
  • What materials is this thermostat made from?
    This thermostat is constructed from high-temperature resistant metal and corrosion-resistant materials, ensuring durability and reliable performance under demanding operating conditions.
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