RTC3821 | Left-Hand Window Motor - Front Door | Discovery, Range Rover Classic
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
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: RTC3821 - Left-Hand Front Door Window Regulator Motor
RTC3821 is a left-hand front door window regulator motor fitted to the front left door on Discovery 1 and Range Rover Classic models within the VIN ranges listed below. The motor converts electrical input from the window switch circuit into rotational torque that drives the regulator mechanism, producing the up-and-down movement of the window glass. The unit mounts directly to the regulator assembly and connects to the door wiring harness and switch; when fitting, ensure the regulator runs freely, there is no binding and the connector pins and wiring are intact. This is a direct-fit complete electric drive for the specified left-hand front door application.
Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Discovery 1 - From VIN GA394352 to GA456980
- Discovery 1 - From VIN HA000001 to HA008666
- Discovery 1 - From VIN HA456981 to HA486551
- Range Rover Classic (1986-1991) - To VIN HA610293
Frequently Asked Questions
The RTC3821 is the electric drive motor for the left-hand front door regulator; it converts electrical input from the window switch into rotational torque that operates the regulator to move the glass up and down. When diagnosing or fitting, check the regulator for wear or binding and confirm the door wiring and connector pins are intact.
| Model | Variant |
|---|---|
| Land Rover Discovery 1 | From VIN GA394352 to GA456980 |
| Land Rover Discovery 1 | From VIN HA000001 to HA008666 |
| Land Rover Discovery 1 | From VIN HA456981 to HA486551 |
| Land Rover Range Rover Classic (1986-1991) | Window Regulators Front (4 Door Station Wagon) - To VIN HA610293 |
| Land Rover Range Rover Classic (1986-1991) | Window Regulators Front (2 Door Station Wagon) - To VIN HA610293 |
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.
Replace the motor if window movement becomes intermittent, fails to operate or if there is persistent noise or binding. Inspect the regulator and door wiring when replacing the motor to ensure the underlying cause is addressed.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
- Z8 products are normally supplied by Allmakes.
All products and accessories available on LRDirect.com come with a 2-year warranty.