This high-quality thermostat is designed specifically for ISUZU NPR, NPR-HD, NQR, and NRR models equipped with 4HE1 4.8L or 4HK1 5.2L engines from 1998-2024. Operating at 82°C, this coolant thermostat helps maintain optimal engine temperature for efficient performance. The package includes the thermostat with a gasket. Installation is straightforward with no assembly required. Manufactured in compliance with industry standards, this thermostat is an essential component for maintaining your ISUZU truck's cooling system. A 1-year manufacturer warranty provides added peace of mind for your purchase.
COMPATIBILITY: Designed for ISUZU NPR NPR-HD NQR NRR models with 4HE1 4.8L and 4HK1 5.2L engines from 1998-2024
TEMPERATURE RATING: Thermostat operates at 82°C (179.6°F) to maintain optimal engine coolant temperature for efficient operation
OEM
8973007903 / 8973007902 / 8973007901 / 8973007900
8972631910 / 8972334180 / 8972318900 / 8971674980
8970918060 / 8943703772 / 8943703771
Specifications
| SKU / Part Number | 7618430 |
|---|---|
| Brand | ISUZU ISP |
| OEM | 8973007903, 8973007902, 8973007901, 8973007900, 8972631910, 8972334180, 8972318900, 8971674980, 8970918060, 8943703772, 8943703771, 1876184300
|
| Weight | 0.25 lb |
| Dimensions (L × W × H) | 4 in × 3 in × 3 in |
| Category | Cooling System |
Compatibility
| Make | Model | Years | Engine | Liters | Fuel |
|---|---|---|---|---|---|
| Isuzu | NPR | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NPR | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NPR-HD | 2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NPR-HD | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NPR-XD | 2016–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NQR | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NQR | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NRR | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W3500 Tiltmaster | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W3500 Tiltmaster | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W4500 Tiltmaster | 2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W4500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W5500 Tiltmaster | 1999–2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W5500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W5500HD Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W3500 Forward | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W3500 Forward | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| GMC | W4500 Forward | 2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W4500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W5500 Forward | 1999–2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W5500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W5500HD Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |






