Fan Clutch For ISUZU NPR NPR-HD NQR 4HE1 4.8L 98-04 Keep your ISUZU NPR, NPR-HD, and NQR running smoothly with this heavy-duty fan clutch designed specifically for 4HE1 4.8L engines from 1998-2004. Keep your ISUZU NPR, NPR-HD, and NQR running smoothly with this heavy-duty fan clutch designed specifically for 4HE1 4.8L engines from 1998-2004.