68352149AA PM sensor Reliable Perfect Fit Diesel Exhaust Particulate Sensor Compatible with 2018 Ram 2500 3500 4500 6.7L l6 Diesel OHV Turbocharged Particulate Matter Sensor OEM Replace 0281007126 0281007496

68352149AA PM sensor

https://wjieco-autoparts.com/

https://www.amazon.com/dp/B0F4XHJ7CQ

The WJIECO 68352149AA PM sensor is a direct-fit diesel particulate matter (PM) sensor built for the 2018 Ram 2500, 3500, and 4500 heavy-duty trucks powered by the 6.7L inline-six Cummins turbo diesel. Mounted in the exhaust stream after the diesel particulate filter (DPF), this sensor keeps a continuous read on how much soot has loaded up inside the filter. That signal feeds the engine control module (ECM), which decides exactly when to start a regeneration cycle. When the sensor drifts or fails, the regeneration strategy goes blind, and the repair bill climbs fast – a sensor swap is a fraction of the cost of a clogged DPF or a dealer-forced regen.

## Fitment and Compatibility

### Compatible Vehicles

– 2018 Ram 2500 – 6.7L i6 Cummins turbo diesel
– 2018 Ram 3500 – 6.7L i6 Cummins turbo diesel
– 2018 Ram 4500 – 6.7L i6 Cummins turbo diesel

This 68352149AA PM sensor is the original-spec replacement for the 2018 model-year heavy-duty Cummins lineup. It bolts into the factory sensor port and mates with the original electrical connector, so no cutting, splicing, or relearn procedure is required. If your truck is a gasoline-powered Ram, a 2016-2017 HD, or a later 2019-and-up 3500, confirm your OE number before ordering – Ram used several revisions across these years.

### Interchangeable Part Numbers

The WJIECO 68352149AA PM sensor is part of the Mopar heavy-duty PM sensor family and cross-references:

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

These numbers identify the same DPF soot sensor application across production runs. Always match the OE number stamped on your original sensor to one of the numbers above before checkout.

## How the Diesel PM Sensor Works

### What It Measures

A small heated sensing element estimates the mass of soot trapped in the DPF. As exhaust particulate builds up on the filter, the sensor signal climbs steadily. Once the programmed soot threshold is reached, the ECM commands a high-temperature regeneration that burns the trapped soot away and returns the filter to a clean state.

### Why Accurate Readings Matter

A failing 68352149AA PM sensor feeds the ECM incorrect soot data. The truck may regenerate too often, wasting fuel and cycling extra heat through the aftertreatment, or it may skip regeneration until the filter plugs and power drops away. A fresh sensor restores normal regen timing, fuel mileage, and pulling power on the 6.7L Cummins. Owners who delay the repair often end up stranded with an exhaust filter full message and a tow bill.

## Signs Your PM Sensor Needs Replacement

Watch for these symptoms on a 2018 Ram HD with the 6.7L Cummins:

– DPF warning lights, reduced power, or limp mode under load
– Check engine light with soot or DPF efficiency codes (for example P2453, P2454)
– Back-to-back regeneration cycles that never seem to finish
– Noticeably worse fuel economy on highway pulls

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 parts.

## Installation Overview

1. Park on level ground, let the exhaust cool, and locate the PM sensor on the DPF assembly.
2. Disconnect the electrical connector and remove the old sensor with the correct socket.
3. Thread the new WJIECO 68352149AA 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.

Most DIY owners finish in 20-30 minutes with basic hand tools, and no sensor programming is required afterward.

## Why Choose WJIECO

– Direct-fit replacement built to OEM specifications for the 2018 HD Cummins
– Sealed, heat-resistant housing rated for continuous high exhaust temperatures
– Factory-matched connector and thread for a clean bolt-in install
– Each unit is inspected before packing to cut down on defect returns
– 12-month warranty with responsive after-sales support

For the 2018 Ram 2500/3500/4500 owner, the WJIECO 68352149AA PM sensor is the straightforward, cost-effective fix that puts the DPF regeneration schedule back on track and keeps the truck working instead of sitting in the shop.