Buy Genuine Cummins Fuel Actuator, Timing Kit ISX15 - wisentpartscenter.com

Description

The Genuine Cummins Fuel Metering Actuator 5677521 is for Cummins ISX and QSX15 15.0L diesel engines equipped with the HPI fuel system. This electronically controlled actuator regulates fuel delivery to the injectors, supporting proper combustion, consistent engine power, and efficient operation.

Fitment / Applications

  • Engine Manufacturer: Cummins
  • Engine: ISX / ISX15 15.0L Diesel
  • Engine: QSX15 15.0L Diesel
  • Engine Control System: CM870 applications
  • Application Years: 2007–2010

What's Included

  • 1 × Genuine Cummins Fuel Metering Actuator

Note: Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The fuel metering actuator controls the amount of diesel fuel delivered to the engine's injectors. It responds to commands from the engine control module, helping maintain proper fuel delivery, smooth engine operation, and consistent power under different loads.

Issue Symptoms / When to Replace

Possible signs of fuel metering actuator problems may include:

  • Hard starting or extended cranking
  • Rough idle or inconsistent engine operation
  • Reduced engine power or poor acceleration
  • Intermittent engine stalling
  • Fuel delivery-related fault codes

These symptoms may also result from fuel pressure, wiring, injectors, or other fuel system issues. Proper diagnosis is recommended before replacing the actuator.

Brand Information

Cummins introduced its electronically controlled HPI fuel system with the ISX engine family in the late 1990s. Unlike conventional injection systems, HPI uses separate fuel metering and timing actuators to control injection quantity and timing. This technology allowed precise electronic fuel management while retaining mechanically actuated unit injectors.

Installation Notes
  • Fuel Contamination: Eliminate fuel contamination before installation to prevent damage or sticking of the replacement actuator.
  • Sealing: Use the correct actuator mounting gasket to prevent fuel leaks.

How to Identify an OEM Part

Look for the M-CUMMINS SCANIA HPL LLC casting on the metal housing and the manufacturer identification barcode label.

Why Buy 5677521 From Wisent Parts Center?

  • 1 Year
    Warranty

  • Genuine Parts

    Authentic OEM parts

  • 30-Day Returns

    Conditions apply

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Warranty & Return Information
Warranty Information

Wisent Parts offers a 1-year warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.