68352149AB PM sensor WJIECO Particulate Matter Sensor for 2018 RAM 2500 3500 4500 6.7L DIESEL OHV Turbocharged Particulate Sensor OEM Replace Part Number 68352149AB 0281007476 0281007477 PM Sensor Auto Sensors

68352149AB PM sensor

https://wjieco-autoparts.com/

https://www.amazon.com/dp/B0F4XKV1VT

The WJIECO 68352149AB PM sensor is a direct-fit diesel particulate matter (PM) sensor engineered for the 2019-2024 Ram 3500 heavy-duty trucks powered by the 6.7L inline-six Cummins turbo diesel, including the chassis-cab models used for flatbeds, dump trucks, and service bodies. Mounted after the DPF, the sensor samples soot loading and sends that signal to the ECM, which schedules regeneration at the correct soot threshold. Without a working sensor, the newest-generation Ram 3500 loses its aftertreatment strategy, and a plugged DPF repair is far more expensive than a sensor swap.

## Fitment and Compatibility

### Compatible Vehicles

– 2019-2024 Ram 3500 pickup – 6.7L i6 Cummins turbo diesel
– 2019-2024 Ram 3500 chassis cab – 6.7L i6 Cummins turbo diesel

This 68352149AB PM sensor is the current production-spec replacement for the latest HD 3500 Cummins application. It bolts into the factory port and locks into the original electrical connector, so no wiring modifications, tuning, or relearn procedure is needed. Note that this AB revision is specific to the 2019-2024 3500; owners of 2500, 4500, or 5500 models should still verify their OE number before ordering, because Ram cataloged different revisions across the HD lineup.

### Interchangeable Part Numbers

The WJIECO 68352149AB PM sensor cross-references the earlier Mopar revisions in the same family:

– Mopar: 68352149AA, 68404997AA
– Bosch: 0281007476, 0281007477

Because Mopar revised this sensor across model years, it is worth double-checking the number on your failed unit against the list above before checkout.

## How the Diesel PM Sensor Works

### What It Measures

The sensor uses a heated element to estimate how much soot has accumulated inside the DPF. As the filter loads, the signal rises. When the programmed soot level is reached, the ECM initiates a high-temperature regeneration that burns the trapped soot off, returning the filter to a clean state and the truck to normal operation.

### Why Accurate Readings Matter

A degraded 68352149AB PM sensor feeds false soot values to the ECM. The truck may regen too often, wasting fuel and cycling heat, or may delay regen until the filter plugs and power drops. A fresh sensor restores proper regeneration timing and protects the DPF – a critical point on newer 3500s where aftertreatment components are expensive and downtime means lost work for business owners.

## Signs Your PM Sensor Needs Replacement

Watch for these symptoms on a 2019-2024 Ram 3500 with the 6.7L Cummins:

– Exhaust filter warnings, reduced power, or limp mode when towing
– Check engine light with soot or DPF efficiency codes (for example P2453, P2454)
– Regenerations that run frequently, interrupt driving, or never complete
– Dropping MPG on long hauls and repeated filter cleaning messages

If your truck is storing a diagnostic trouble code, look up the exact definition and likely causes on the free code library at [OBD-Codes.com](https://www.obd-codes.com) before ordering.

## Installation Overview

1. Park on level ground, let the exhaust cool, and locate the PM sensor on the DPF.
2. Disconnect the electrical connector and remove the old sensor with the correct socket.
3. Screw the new WJIECO 68352149AB PM sensor into the same port and seat it like the original.
4. Reconnect the connector, start the engine, and clear stored codes with a scan tool.

The job usually takes 20-30 minutes with basic hand tools, and no sensor programming is required afterward.

## Why Choose WJIECO

– Direct-fit replacement for the 2019-2024 Ram 3500 6.7L Cummins
– Sealed, heat-resistant housing built for work-truck duty cycles
– Factory-matched connector and thread for a clean bolt-in install
– Each unit inspected before packing to reduce defect returns
– 12-month warranty and responsive after-sales support

For the 2019-2024 Ram 3500 owner who depends on the truck for work, the WJIECO 68352149AB PM sensor is the dependable replacement that restores accurate DPF soot readings, keeps regen on schedule, and minimizes shop time.