This crankshaft gear is a genuine OEM engine timing component designed for

• Isuzu NPR

• Isuzu NPR-HD

• Isuzu NQR

• Isuzu NRR

Engines Supported:

• 4HE1 4.8L Diesel

• 4HK1 5.2L Diesel

• 6HH1 8.2L Diesel

Years: 1998–2016

The crankshaft gear is a critical component of the engine timing system. It transfers rotational force from the crankshaft to the camshaft gear and other driven components (such as injection pump gears in gear-driven systems). Precise gear alignment ensures the following:

• Accurate valve timing

• Proper fuel injection timing

• Balanced engine performance

• Reduced vibration and noise

• Long-term engine durability

Wear, chipped teeth, or misalignment can cause timing irregularities, engine noise, or severe internal damage. Replacing it with a genuine OEM crankshaft gear ensures exact tooth profile, hardness specification, and factory timing accuracy.

Key Features

• Genuine New OEM crankshaft gear

• Fits Isuzu NPR, NPR-HD, NQR, NRR (1998–2016)

• Compatible with 4HE1, 4HK1, and 6HH1 diesel engines

• Precision-machined gear teeth

• Maintains factory timing specifications

• Direct OEM replacement

Vehicle Compatibility

Fits:

• Isuzu NPR

• Isuzu NPR-HD

• Isuzu NQR

• Isuzu NRR

Engines: 4HE1 4.8L / 4HK1 5.2L / 6HH1 8.2L Diesel
Years: 1998–2016
Condition: New OEM
Part Type: Crankshaft Gear
System: Engine Timing System

Common Signs of a Worn or Damaged Crankshaft Gear

• Unusual engine timing noise

• Engine misfire or rough running

• Metal particles in engine oil

• Timing misalignment during rebuild

• Visible chipped or worn gear teeth

  Frequently Asked Questions (FAQ)

  What does the crankshaft gear do?

  It transfers rotational motion from the crankshaft to the camshaft and related timing components, maintaining precise engine timing.

  Which engines does this gear fit?

  This gear fits Isuzu 4HE1 4.8L, 4HK1 5.2L, and 6HH1 8.2L diesel engines from 1998 to 2016.

  Can worn gear teeth affect engine timing?

  Yes. Damaged or worn teeth can cause improper timing, engine noise, and potentially severe internal damage.

  Is special alignment required during installation?

  Yes. Proper alignment with timing marks is critical to ensure correct valve and injection timing.

  Should the timing gears be replaced as a set?

  During a full engine rebuild, replacing related timing gears together is recommended to ensure even wear and long-term reliability.

  Is professional installation recommended?

  Yes. Installation requires precise timing alignment and torque specifications to avoid engine damage.