LR043878 | Side Air Bag Sensor - Airbag System | Discovery 4, Discovery 5, Range Rover
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: LR043878 - Side Air Bag Sensor
LR043878 is a Side Air Bag Sensor fitted to the airbag system to detect side impacts. The sensor monitors rapid lateral changes consistent with a side collision and supplies an electrical input to the airbag control unit so the system can make deployment decisions for the side airbags. Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Discovery 4 (2010-2016) - From VIN AA000001
- Discovery 5 (2017 onwards) - From VIN HA000001
- Discovery 5 (2017 onwards) - From VIN K2000001
- New Defender (2020 onwards)
- New Range Rover (2022 onwards)
- New Range Rover Evoque (2019 onwards)
- Range Rover (2013-2022) - To VIN HA999999
- Range Rover (2013-2022) - From VIN JA000001
- Range Rover Evoque (2012-2018) - From VIN EG000001
- Range Rover Sport (2014-2022) - To VIN HA999999
- Range Rover Sport (2014-2022) - From VIN JA000001
Frequently Asked Questions
The LR043878 Side Air Bag Sensor monitors side-impact conditions and sends an electrical signal to the airbag control unit to assist with deployment decisions for the side airbags. It detects rapid lateral changes consistent with a side collision and is used alongside other sensors to ensure correct timing and activation. Replacement should match the exact part number to maintain compatibility with the vehicle's airbag module and wiring harness.
| Model | Variant |
|---|---|
| Land Rover Discovery 4 (2010-2016) | Airbag System (Sensors) - From VIN AA000001 |
| Land Rover Range Rover Evoque (2012-2018) | Airbag System (Changsu, China) - From VIN EG000001 |
| Land Rover Range Rover (2013-2022) | Airbag System (Airbag Modules) - To VIN HA999999 |
| Land Rover Range Rover (2013-2022) | Airbag System (Airbag Modules) - From VIN JA000001 |
| Land Rover Range Rover Sport (2014-2022) | Airbag System (Airbag Modules) - To VIN HA999999 |
| Land Rover Range Rover Sport (2014-2022) | Airbag System (Airbag Modules) - From VIN JA000001 |
| Land Rover Discovery 5 (2017 onwards) | Airbag System (Airbag Modules, Solihull) - From VIN HA000001 |
| Land Rover Discovery 5 (2017 onwards) | Airbag System (Airbag Modules, Nitra Plant Build) - From VIN K2000001 |
| Land Rover New Range Rover Evoque (2019 onwards) | Airbag System (Halewood, UK) |
| Land Rover New Range Rover Evoque (2019 onwards) | Airbag System (Changsu, China) |
| Land Rover New Range Rover Evoque (2019 onwards) | Airbag System (Itatiaia, Brazil) |
| Land Rover New Defender (2020 onwards) | Airbag System |
| Land Rover New Range Rover (2022 onwards) | Airbag System (Airbag Modules) |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
All products and accessories available on LRDirect.com come with a 2-year warranty.