5462277 Crankcase Pressure Sensor for Cummins ISB ISC ISL ISX- Replace No. 4954400 4984575 57790528

The 5462277 Crankcase Pressure Sensor is a critical component used in Cummins ISB, ISC, ISL, and ISX engines to monitor crankcase pressure and ensure proper ventilation. It replaces older part numbers 4954400, 4984575, and 57790528.

Key Features & Compatibility:

✅ Replaces:

• 4954400 (older Cummins OEM)

• 4984575 (common in ISB/ISC)

• 57790528 (some ISX/QSK applications)

✅ Fits Engines:

• ISB 5.9L & 6.7L (Dodge Ram 2003–2018+)

• ISC 8.3L, ISL 8.9L (medium-duty trucks & buses)

• ISX 11.9L/15L (heavy-duty trucks)

Symptoms of a Bad Crankcase Pressure Sensor:

⚠️ Check Engine Light (CEL) with codes:

• Fault Code 1114.3 (Crankcase Pressure Sensor High)

• Fault Code 1114.4 (Crankcase Pressure Sensor Low)

• Excessive blowby or oil leaks

• False “High Crankcase Pressure” warnings

• Engine derate or performance issues

Installation Notes:

1. Location:

   • Typically mounted on the valve cover or block breather assembly.

   • On Dodge Ram 6.7L ISB, it’s near the turbo intake.

2. Replacement Tips:

   • Check for clogged CCV (crankcase vent) system before replacing.

   • Ensure the connector is sealed (exposure to oil can cause failure).

   • No need for thread sealant (usually a push-in or threaded sensor).

Cross-Reference/OEM Alternatives:

• Cummins OEM: 5462277, 4954400, 4984575, 57790528

• Aftermarket:

  • Dorman 904-214 (verify fitment)

  • Standard Motor Products PS451

Does It Fit a Dodge Ram?

✅ Yes (2007.5–2018 6.7L ISB Cummins) – Commonly used in later models.
⚠️ 2003–2007 5.9L Rams may use a different sensor (check part numbers).