Keep your engine running at optimal temperature with this precision-engineered coolant thermostat designed specifically for Isuzu NPR, NPR-HD, NQR, and NRR models from 1998-2025. Compatible with both 4HE1 4.8L and 4HK1 5.2L engines, this thermostat maintains a consistent 85°C operating temperature for maximum engine efficiency. The robust construction features a durable housing and reliable thermal response mechanism that helps prevent engine overheating and ensures proper warm-up cycles. This direct-fit replacement part matches the original equipment specifications, making installation straightforward while maintaining proper coolant flow regulation. Essential for maintaining your vehicle's cooling system performance, this thermostat helps protect your engine from temperature-related stress and potential damage.

COMPATIBILITY: Designed specifically for Isuzu NPR, NPR-HD, NQR, and NRR models from 1998-2025 with 4HE1 4.8L and 4HK1 5.2L engines

TEMPERATURE RATING: Engineered to open at 85°C (185°F) for optimal engine temperature regulation and performance

CONSTRUCTION: Features durable metal housing with precision-engineered internal components for reliable operation

FUNCTION: Controls engine coolant flow to maintain consistent operating temperature and prevent overheating

DIRECT REPLACEMENT: Matches OEM specifications for proper fit and function in supported vehicle applications

OEM

8973007871 / 8973007872

8973007873 / 8973007870

8972631940 / 8972318870

8971674950 / 8971645690

8970286902 / 8943703781