# Mardarth 5Q0412521C Front-Left Ride Height Sensor

Mardarth 5Q0412521C is a front-left ride height level sensor listed for select Audi A3 Quattro, Q3, S3 and RS3 model years. Its four-pin terminal and stated vehicle-year fitment make matching the part number, position and vehicle configuration essential before ordering.

- [Original product page](https://loonieperks.com/product/mardarth-5q0412521c-front-left-ride-height-sensor)
- [View offer](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- Market: CA
- Language: en-CA
- Currency: CAD
- Brand: Mardarth
- Model: 5Q0412521C
- Category: Cars & Motorcycles > Auto Parts & Maintenance > Mechanical Parts
- Price: 72.79 CAD
- Previous price: 90.99 CAD
- Discount: 20%
- Price checked: 2026-11-13T12:12:23.481Z

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing identifies it as a front-left, driver-side ride height or headlight level sensor.
- The stated replacement reference is 5Q0412521C, with a four-pin terminal.
- The listed vehicle fitment covers specific A3 Quattro, Q3, S3 and RS3 years.

## Pros

- Position and reference number are specified, helping buyers compare the replacement against the part being removed.
- The listing provides vehicle-year fitment ranges and a four-pin terminal detail.

## Specifications

### Identity and fitment
- Brand: Mardarth
- Model: 5Q0412521C
- Listed fitment: Compatible with 2015-2019 A3 Quattro , 2019-2020 Q3, 2015-2019 S3, 2019 RS3
- Position: Front Left \(Driver Side\)
### Electrical and physical details
- Terminal quantity: 4 Pins
- Colour: Black
- Dimensions listed: 15.2 x 20.3 x 20.3 centimetres
- Material listed: Alloy Steel

## Before you buy

- The listing calls the part both a ride height level sensor and a headlight level sensor. Confirm the required sensor function, part number, connector and vehicle fitment for your exact trim before purchase. Its stated benefit to vehicle height and stability is a manufacturer claim.

## In the box

- Bag (Included)

## A good fit for

- Owners replacing a front-left sensor on a listed Audi model and year who can confirm the 5Q0412521C reference and four-pin connector.

## Less suited to

- Buyers who need a different side, connector configuration, reference number or a fitment not listed.

## Frequently asked questions

### Which vehicles are listed as compatible?
The listing names A3 Quattro for 2015–2019, Q3 for 2019–2020, S3 for 2015–2019 and RS3 for 2019. Confirm fitment for your exact vehicle before ordering.
### Which side and connector does this sensor use?
It is listed for the front left, driver side, with a four-pin terminal.
### Is this a ride height sensor or a headlight level sensor?
The listing uses both descriptions. Verify that reference 5Q0412521C and the sensor function match your vehicle's required part.

## Alternative options

- [5Q0412522C Front Right Headlight Level Sensor for A3 ,Q3 \| 3 Pins,Front Right, \(Passenger Side\)](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [EATAKWARD 84031FG000 Ride Height Level Sensor, Replacement for Subaru Crosstrek 2016-2021 Replacement for Subaru Forester 2009-2013, Replaces 926-233](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [Hihaha 5Q0412522C Suspension Ride Height Level Sensor for Audi A3 2015-2020 \| Front Right, Headlight Level Sensor, Black, Durable Metal, 1 Pcs](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [Hihaha 8R0941285D Suspension Ride Height Level Sensor for Audi Q5 2009-2017 \| Front Left Right, Headlight Level Sensor, Black, Durable Metal, 1 Pcs](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [Motoforti Rear Left Height Level Sensor for Audi A6 2012-2018 4H0941309C \| Car Air Suspension Ride Height Level Sensor, Plastic, Black](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [X AUTOHAUX Front Left Side Height Level Sensor for Audi Q5 2009-2017 Black \| Ride Height Level Control Valve Kit, Suspension Ride Height Level Sensor, 1 Set](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [TUCKBOLD Air Suspension Ride Height Level Sensor for BMW 128i 37146763735 \| for BMW 128i 2008-2013, Front Rear Left Right, Height Level Sensor, 1 Pcs](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [WEITARI 4PCS Parking Bumper Reverse AID Backup Sensor 8A53-15K859-ABW,Compatible with Edge Escape Expedition Explorer Flex Focus Fusion Mustang Taurus Continental MKS MKT MKX MKZ Navigator Mariner](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [Hihaha 5Q0412521C Suspension Ride Height Level Sensor for Audi A3 2015-2020 \| Front Left, Headlight Level Sensor, Black, Durable Metal, 1 Pcs](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)
- [A-Premium Ride Height Level Sensor, Compatible with Audi \| for Audi A3 Quattro 2015-2019, Q3 2019-2020, S3 2015-2019, RS3 2019, Front Left Driver Side](https://loonieperks.com/visit/mardarth-5q0412521c-front-left-ride-height-sensor)

## Images

![Mardarth 5Q0412521C Front-Left Ride Height Sensor — 1](https://loonieperks.com/i/tFFI5mF4_5sR93N-YimyaNzvu-TDAz5Zx-mcAVXGiiw2Ejd643ma1lOHvOYlZqS3QgM6SAqU-TIVIL1Jv-r-xz5cVbXIJisKOaTQJH9LGcY9lNdtUsS5.jpg)

![Mardarth 5Q0412521C Front-Left Ride Height Sensor — 2](https://loonieperks.com/i/4zn7z-E0uaiOj9OJm4-q5j1kqnPIZGP-8LDnK7FAObTG185s4DWxb8e_1CloTR-KYpOqjqP2lsw8pnhn_hvyANsyngQAaPQKnTH3_kYXI7N4uGcy3xgu.jpg)

![Mardarth 5Q0412521C Front-Left Ride Height Sensor — 3](https://loonieperks.com/i/JnlAjdzgtiFRzPglrvOYkvGL--_ZVbvFJGtdL2quuJ3FjNWR0qtJNUee-FhIuFlX_9zsQQ5871fdDwc_FbSA5an-nSb0St5gx85--FjK1kM8a_V2Cfsa.jpg)

![Mardarth 5Q0412521C Front-Left Ride Height Sensor — 4](https://loonieperks.com/i/hbvpO_tCOTqYF-PmGNy6a_0Wkmr-RWURpA7SE6AzgfNZPAXPeIaXVgk01cyokmt3CyGoW_xaQbfWHSU7e496SGKJjP2AO6qhWUiAD_qSPajCdOX2nKif.jpg)

![Mardarth 5Q0412521C Front-Left Ride Height Sensor — 5](https://loonieperks.com/i/jY7XXq-W_g8HSw7zrTzIb7f7zdr39TvIWFwF_boXSxAGWvbgHIhWsTZYIwQsk_aPAtH2QUxTODLwjONc4zAWSxC3HlAAxb0S90ZDiU4LGBse4xvCu_MH.jpg)

![Mardarth 5Q0412521C Front-Left Ride Height Sensor — 6](https://loonieperks.com/i/LSVYWMn7SIoVhAkdbPJpbjUo3idrAVEaARWG9cVFeYKNn1JOUvzur5S8czvBffQYK_eAKy7PY3dVDRn_nZitLdIdeb_znHBwgHkqDry3E3vJS_L_jOwl.jpg)