Denso Common Rail Fuel Pump 294000-1190 8-97386557-4 1K0B13800 1670089T0L For 4HK1 Diesel Vehicles

This HP3 common rail fuel pump is calibrated specifically for Isuzu 4HK1 diesel engines used in medium-duty trucks and construction equipment. The precision SCV valve dynamically regulates rail pressure and fuel delivery to match original ECU parameters. It features OEM mounting structure for direct bolt-on replacement and has passed strict high-pressure durability cycle tests. It improves cold start reliability, throttle response and fuel economy for heavy-duty commercial & engineering working conditions.

• OEM precision SCV valve delivers accurate rail pressure control, perfectly matching Isuzu 4HK1 original common rail ECU system
  Remarkably improves low-temperature cold start performance, eliminating rough idle, engine shaking, unstable operation and black smoke
  Standard original mounting dimensions, direct bolt-on installation without modification, greatly cuts repair labor hours
  Heavy-duty cast aluminum housing resists vibration, heavy loads and harsh construction/road conditions for long-term stable operation
  Continuous stable high-pressure fuel supply ensures full engine power and smooth linear acceleration response
  Precise fuel metering optimizes combustion efficiency, effectively lowering fuel consumption and improving economy
  Undergoes rigorous pressure-resistance & durability tests to reduce pressure drop and oil leakage failures, extending pump service life
  Mitigates pressure impact wear on injectors and fuel rails, lowering spare parts damage and repeated maintenance costs
  Precisely factory-calibrated to match ECU signal logic, avoiding engine fault codes and abnormal running conditions
  Standardized HP3 platform with universal aftermarket compatibility, easy maintenance & replacement to maximize vehicle uptime

Non-4HK1 engines, passenger vehicles, gasoline cars, modified fuel systems, other HP3 model pumps