
Verified Fitment
| Brand | Model | Year | Variant / type code |
|---|---|---|---|
| BYD | Yuan EV | 2018 | All versions |
| BYD | Yuan EV | 2019 | All versions |
| BYD | Yuan EV | 2020 | Luxury Y |
| BYD | Yuan EV | 2021 | Luxury Y |
| BYD | Yuan EV | 2022 | Luxury Y |
| BYD | Yuan Pro | 2018 | All versions |
| BYD | Yuan Pro | 2019 | All versions |
| BYD | Yuan Pro | 2020 | All versions |
| BYD | Yuan Pro | 2021 | All versions |
| BYD | Yuan Pro | 2022 | All versions |
| BYD | Yuan Pro | 2023 | Type 20 (Misty-Grey Interior 04) |
| BYD | Yuan Pro | 2024 | Type 20 (Misty-Grey Interior 04) |
Type codes are printed on the vehicle identification plate. Not sure? Send us the number from the old part over WhatsApp and we confirm it against the factory catalogue before you order.
Front Door Window Switch (Left) for BYD Yuan Pro, OE 12840324-00
Price shown without any local sales tax. Shipping is shown on this page and confirmed at checkout. Import taxes and duty in Hong Kong SAR are not included and may be charged when the parcel arrives.
About This Part
Left Front Door Window Switch Set for the BYD Yuan Pro, OE 12840324-00 (reference SA2FC-3746500D-E2). This is the driver-door master control panel: the power window switches for all four windows plus the mirror adjust and lock buttons in one plastic housing. Measured against the tape it spans about 21 cm. It fits the 2023 Yuan Pro, earlier Yuan Pro and the Yuan EV. Mounts in the driver door as a direct-fit window lifter switch to restore full window and mirror control.
Technical Details
| Specification | Value |
|---|---|
| Condition | New |
| Quality line | Original/Genuine |
| Material | Plastic |
| Colour | Black |
| Mounting position | Door, Front Left |
| Amount in delivery | 1 piece |
| Specification | Value |
|---|---|
| OE references | 12840324-00 · SA2FC-3746500D-E2 |
| Approx. weight (packed) | Under 1 kg |
| Approx. packaging dimensions | 36 x 20 x 17 cm |
| Country of origin | China |
| Vehicle type | Passenger Car |
Packaging dimensions and weight are approximate and for orientation only. Shipping to Hong Kong SAR is shown above and confirmed at checkout.
Frequently Asked Questions: OE 12840324-00
Which side of the car is this window switch set for?
This is the left side, at the front, and the description names it as the left front door window switch set. Left is read from the driver's seat looking forward, not from standing outside the car looking in at the door. Get the door card off and check which side you are actually working on before you order, because the opposite side is a separate listing under its own OE number. If the card is already off, compare the mounting points and the plug on your old switch with the images on this page.
The number on my old switch is different. Is this still the right part?
This switch also carries the reference SA2FC-3746500D-E2, alongside the OE number 12840324-00. Suppliers and older paperwork often print one of those and not the other, so a string on your old part that looks nothing like the OE number here does not prove a mismatch on its own. Compare what you can read against both. If it matches either one, you are on the right listing. If it matches neither, send us the number you have read together with a photograph of the old part and its label through the quote route and we will check it against the fitment table.
How soon will this switch reach me?
The delivery time is 8 to 25 days, from order to door. Keep both in mind when you are planning, and leave the door card alone until the switch is in your hands. If a particular date matters, ask through the quote route before ordering rather than after. The shipping cost for your country is shown on this page and confirmed at checkout before you pay. Before you order, check the number on your old part against OE 12840324-00.
What is this switch set made of?
This switch set is made from plastic. It is supplied as a moulded unit, so what you fit is the complete assembly and not an internal repair kit. If the part you are replacing has broken mounting points as well as a dead button, the same moulded housing is what this page supplies. Check the shape against the images before ordering.
Does this switch need painting or finishing to match my interior?
The colour for this item is black, and it mounts in the door where the driver sees it every day. Nothing is painted or lacquered at our end, and only one colour is supplied under this OE number, so what arrives is the black item shown here. There is no alternative shade to select on this page. If your car has door trim in a lighter finish and you want to know whether black is correct for that build, send a photograph of the old part and its label through the quote route and we will check the fitment table before you order.
Why is there only one version of this switch on the page?
Only one version is offered here. BYD is the manufacturer of the Original/Genuine item, and no aftermarket manufacturer is available under this OE number, so there is no second tier to sit beside it. The price shown on this page is for the genuine part. That reflects what we can source under 12840324-00, not a judgement on any other supplier. If you would like us to look for something under the alternative reference instead, use the quote route with a photograph of the old part and its label and we will tell you what comes back.
Related Parts
How Ordering Works
Your order is packed and shipped tracked, and the import duty and VAT that apply to your destination are calculated at checkout. The final gallery image on this page is the process card showing each delivery step. Delivery to Hong Kong SAR: 8 to 25 days, depending on the option you choose at checkout. Shipping to Hong Kong SAR: from $8.70 (Economy), from $12.70 (Express), confirmed at checkout before you pay.





