4HK1
Production History
- Isuzu NPR/NQR 7.5t- 2007-2024
- Isuzu N-Series Tipper/Dropside- 2007-2024
Known Failures
- DPF clogging- chronic blockage leads to excessive backpressure and turbo failure.
- EGR valve failure- carbon buildup causes sticking valves and intake contamination.
- Turbocharger degradation- oil starvation or debris from DPF issues causes shaft play.
Specs
Diesel · 5.2L · 150-190hp · Turbocharged
Replacement Cost
Typical UK rebuilt engine: £2,800-£5,500(supply only)


