DEF / AdBlue Level Sensors
Urea tank level for SCR systems
DEF / AdBlue Level Sensors
Tank-mounted level sensors for AdBlue/DEF tanks — capacitive and resistor-based designs, matched to OE ECU expectations.
The DEF tank is what keeps the SCR system legal to run, and the level sensor is what the driver sees. Our sensors monitor tank level against an OE-defined voltage or resistance map, so the dash instrument and ECU warnings behave as the manufacturer intended.
We offer capacitive probes for larger tanks and sealed resistor assemblies for small integral tanks, both with an integrated anti-flooding switch. Housing and hose are engineered for AdBlue chemistry — urea is corrosive to ordinary nylon and brass.
Representative series and where they fit
Representative series, not an exhaustive price list. Series codes are our internal naming; the connector and range cells are what a buyer actually checks first. For any OE number you fit we will return the exact SHR equivalent with its own datasheet.
| Series | Sensing element | Range | Connector | Typical fitment |
|---|---|---|---|---|
| LS-Axx | Capacitive, 3-plate | 0–100 %, to 400 L tank | 5-pin, M12×1.5 | Diesel & DEF tank level |
| LS-Bxx | Conductometric, 2-rod | 0 / 1 switch | 3-pin, M12×1.5 | Engine oil sump level |
| LS-Cxx | Capacitive + dosing heater | 0–100 %, 12 / 24 V | 5-pin + heater | DEF / AdBlue reservoir |
| LS-Dxx | Float, magnetic switch | 0 / 1 switch | 2-pin, M8×1.0 | Brake master cylinder |
| LS-Eyy | Conductometric | 0 / 1 switch | 2-pin, M8×1.0 | Windshield washer reservoir |
| LS-Fyy | Capacitive, sealed | 0 / 1 switch | 4-pin, M12×1.5 | Fuel filter water trap |
| LS-Gyy | Conductometric + relay | 0 / 1 switch | 3-pin, M12×1.5 | Radiator / overflow cap |
| LS-Hyy | Capacitive, 4-plate | 0 / 1 switch | 3-pin, M12×1.5 | Commercial HVAC drain tray |
Part numbers we cross-reference
Numbers our catalogue desk works from, each shown with the application it was listed against. The Verified column records whether we have bench-checked the fitment ourselves — where it is empty we have confirmed the number, not the fitment. Not a fitment guarantee: send your OE number and we confirm coverage and return the datasheet before any order is placed.
| OE number | System / family | Application | Verified |
|---|---|---|---|
| 5418030 | Cummins | ISF 2.8 urea tank level + temperature | |
| 1000925884 | Weichai | WP12 / WP13 urea level (China VI trucks) | |
| 04-35649-002 | Freightliner | Urea quality & level — commercial vehicles | — |
Urea / DEF part numbers in the market
8 numbers read from the heading of a live distributor product page for a diesel exhaust fluid level sensor. The vehicle column is only what that page itself states; where it states nothing the row says so. Every Verified cell is empty on purpose — these confirm the number exists in the market, not that we have bench-tested the part. Send us the number and we confirm coverage against your OE before any order.
Trucks & commercial 3
Grouped only where the source page named a vehicle. The remaining 5 came from pages that named the component but not the vehicle; they are in the table below but deliberately not grouped, because assigning them would be a guess.
8 of 8 numbers shown
| OE / part number | Vehicle named on the source page | Brand named in the heading | Verified |
|---|---|---|---|
| Q21-6173-001K1T | PACCAR | PACCAR | — |
| 356600WMA | PETERBILT, PACCAR | PACCAR | — |
| 4097727C91 | NAVISTAR | NAVISTAR | — |
| 0444021031 | Not stated on the source page | BOSCH | — |
| F01C600194 | Not stated on the source page | BOSCH | — |
| 85514348 | Not stated on the source page | ACDELCO | — |
| F01C600200 | Not stated on the source page | BOSCH | — |
| V51-68-0004 | Not stated on the source page | VEMO | — |
These are separate from the numbers in our own cross-reference table above, which are ours and carry our own fitment check.
Why distributors buy from SHR
Two sensing principles
Capacitive for large external tanks, sealed resistive element for compact integral tanks.
AdBlue-compatible materials
Housing, hose and seals chosen for long exposure to aqueous urea without delamination.
Anti-flooding switch
Open/closed indication prevents the classic low-level false alarm.
ECU-matched output
Output map follows the OE voltage/resistance curve so existing dash instrumentation works unchanged.
Sealed hose assemblies
Supplied as a complete harness drop-in, not loose parts.
Fitment coverage
- Heavy-duty trucks with on-board DEF tanks
- Coaches and buses
- Off-road diesel equipment
- Diesel generators with SCR
- Agricultural tractors
- Retrofit DEF systems
Send your OE numbers today
Tank-mounted level sensors for AdBlue/DEF tanks — capacitive and resistor-based designs, matched to OE ECU expectations.