2014 Isuzu NQR Serpentine Belt: Routing, Replacement, and Part Numbers

Quick Answer

• Belt Length: Approximately 94.5 inches (2400 mm)
• Rib Count: 6-rib
• OEM Belt PN: Consult your Isuzu dealer for the exact OEM part number for your specific NQR engine configuration.
• Aftermarket Cross-references:
  • Gates: K060945 (confirm fitment for your engine)
  • Dayco: 5060945 (confirm fitment for your engine)
  • Continental Elite (formerly Goodyear): 4060945 (confirm fitment for your engine)
• Auto-Tensioner PN: Consult your Isuzu dealer for the exact OEM part number. Aftermarket options will vary, often found under part numbers like Gates 38178 or Dayco 89240, but always verify fitment.
• Idler Pulley PN: Consult your Isuzu dealer for the exact OEM part number. Aftermarket options will vary, often found under part numbers like Gates 36173 or Dayco 89048, but always verify fitment.

Belt Routing for the 2014 Isuzu NQR

The serpentine belt on your 2014 Isuzu NQR powers several critical accessories, including the alternator, power steering pump, and air conditioning compressor. Before you begin any work, it is highly recommended to take a clear photograph of the existing belt routing. This will serve as an invaluable guide for reinstallation.

While engine configurations can vary slightly, the typical routing path for the 2014 Isuzu NQR's serpentine belt generally follows this sequence:

1. Begin at the crankshaft pulley, located at the bottom center of the engine. The belt will likely wrap around the bottom of this pulley.
2. From the crankshaft, the belt typically travels upwards to the A/C compressor pulley, often found on the lower passenger side of the engine compartment. It will wrap around the top or bottom of this pulley.
3. After the A/C compressor, the belt may pass over or under an idler pulley. Idler pulleys serve to guide the belt and maintain proper tension.
4. The belt then continues to the alternator pulley, usually located higher up on the engine, often on the driver's side. It will typically wrap around the top of this pulley.
5. Next in the path is the power steering pump pulley, which could be located above or below the alternator, depending on the specific engine. The belt will engage with this pulley.
6. Following the power steering pump, the belt often wraps around the water pump pulley, which is essential for engine cooling.
7. Finally, the belt reaches the automatic tensioner pulley. The tensioner applies constant pressure to the belt, keeping it taut and preventing slippage. The belt will pass over or under this pulley before completing its loop back to the crankshaft.

Remember to trace the path carefully, noting which side of each pulley the belt contacts.

How to Replace the Serpentine Belt

Replacing the serpentine belt on your 2014 Isuzu NQR requires a few basic tools and a systematic approach. The most crucial tool is a serpentine belt tool or a long 3/8" drive breaker bar, as it will be used to relieve tension on the automatic tensioner.

1. Safety First: Ensure the engine is off and cool. Disconnect the negative battery terminal to prevent accidental starting.
2. Document Routing: As mentioned, take a clear photo or draw a diagram of the current belt routing. This is critical for correct reinstallation.
3. Locate the Tensioner: Identify the automatic belt tensioner. It will have a square hole or a bolt head designed for a serpentine belt tool or a breaker bar.
4. Relieve Tension: Insert your serpentine belt tool or 3/8" breaker bar into the tensioner