Crankshaft Position Sensor 4921601
1998-2002 Dodge Ram 2500 / 3500 | 5.9L Cummins Turbo Diesel
Replacement crankshaft position sensor for compatible Dodge Ram Cummins diesel applications. Designed to replace the specified original-equipment sensor and provide the engine management system with critical crankshaft position and speed information.
Product Overview
Keep your Dodge Ram Cummins diesel engine management system operating with the correct crankshaft signal using this replacement 4921601 crankshaft position sensor. Also known as a CKP sensor, crank position sensor, crankshaft speed sensor or crank sensor, this component helps the engine control system identify crankshaft rotational position and speed.
A malfunctioning crankshaft sensor may contribute to starting difficulties, intermittent stalling, irregular engine operation or diagnostic trouble codes. These symptoms can have multiple causes, so proper testing is recommended before replacing the sensor.
Ideal for owners maintaining a second-generation Dodge Ram 2500 or Ram 3500 equipped with the compatible 5.9L 24-valve Cummins ISB turbo diesel engine.
Key Features and Benefits
OE Reference Compatibility
Listed as a replacement for part numbers 4921601 and 5015488AB. Verify the original part number and connector before ordering.
Critical Engine Position Signal
Provides crankshaft position and rotational speed information used by the engine control system.
Diesel Truck Application
Intended for compatible Dodge Ram 2500 and 3500 trucks equipped with the 5.9L Cummins diesel engine.
Single Sensor Replacement
Includes one replacement crankshaft position sensor for servicing the appropriate engine application.
Vehicle Fitment Guide
Designed for the following vehicle and engine combinations when equipped with the matching crankshaft position sensor:
| Make | Model | Years | Engine |
|---|---|---|---|
| Dodge | Ram 2500 | 1998-2002* | 5.9L Cummins Diesel |
| Dodge | Ram 3500 | 1998-2002* | 5.9L Cummins Diesel |
Technical Specifications
Replacement Part Numbers and Cross-Reference Information
Customers searching for a Cummins 4921601 crankshaft sensor or Dodge 5015488AB crankshaft position sensor can use these numbers to identify the correct replacement application.
4921601 | 5015488AB
Other commonly cataloged cross-references for this sensor family include 3941966, 3943409, 4002066, 5015488AA and 5491995. These are identification references only; compare the actual part and vehicle application before ordering.
Possible Symptoms of a Faulty Crankshaft Position Sensor
- Intermittent engine starting problems or extended cranking.
- Unexpected engine stalling or engine shutdown.
- Irregular engine speed signal or inconsistent running.
- Engine-related diagnostic fault codes.
- Intermittent drivability concerns caused by loss of a valid crankshaft position signal.
Diagnostic note: These symptoms are not proof of sensor failure. Wiring damage, poor electrical connections and other fuel or engine management issues can produce similar problems.
Installation and Compatibility Notes
- Verify the vehicle year, engine configuration and original part number.
- Locate the existing crankshaft position sensor and inspect the connector and wiring.
- Disconnect the batteries according to the vehicle service procedure before working on the electrical system.
- Remove the existing sensor using the appropriate service procedure.
- Compare the replacement sensor with the original before installation.
- Install using the manufacturer's specified procedure and torque requirements.
- Reconnect electrical connections and verify proper engine operation.
Frequently Asked Questions
Will this crankshaft sensor fit my 1999 Dodge Ram 2500 5.9 Cummins?
It is listed for compatible 1999 Ram 2500 trucks with the 5.9L Cummins diesel. Verify that the original sensor matches part number 4921601 or 5015488AB.
Does this fit a 2001 Dodge Ram 3500 diesel?
Yes, for the applicable 5.9L Cummins diesel sensor configuration. Confirm the original connector and part number before purchase.
Is this compatible with all 1998 Dodge Cummins engines?
No. The 1998 model year includes different engine configurations. This sensor is primarily associated with later 1998.5 24-valve applications. Verify the original sensor before ordering.
What does a crankshaft position sensor do?
The crankshaft position sensor provides rotational position and speed information used by the engine management system to coordinate engine operation.
Can a bad crankshaft sensor cause a no-start condition?
Yes. A missing or incorrect crankshaft signal can contribute to starting problems on applicable systems. Proper electrical and engine diagnostics should be completed before replacement.
Is part number 5015488AB related to 4921601?
Yes. These numbers appear in replacement sensor cross-reference catalogs. Physical configuration and vehicle-specific compatibility should still be confirmed.
Does this sensor increase horsepower or fuel economy?
No. This is a replacement engine management sensor, not a performance tuning device. Its purpose is to restore the correct sensor function on a compatible vehicle.
Is this a universal Cummins diesel sensor?
No. Cummins engines use different sensor configurations across model years and engine families. Match the original part number before ordering.
What comes in the package?
One replacement crankshaft position sensor. No additional hardware or installation tools are specified.
Package Includes
Crankshaft Position Sensor - Replacement Reference 4921601 / 5015488AB
Shipping and Worldwide Availability
XS-POWER supplies automotive replacement parts and performance components for customers in the United States and international markets. Worldwide shipping options may be available depending on the destination and checkout eligibility.
Availability: In stock - typically ships within 1 business day. Tracking information is generally provided within 24-48 hours.
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