
Verified Fitment
| Brand | Model | Year | Variant / type code |
|---|---|---|---|
| BYD | Song PLUS | 2020 | 1.5L Displacement, Luxury (Black-Brown Interior) |
| BYD | Song PLUS | 2021 | 1.5L Displacement, Luxury (Black-Brown Interior) |
| BYD | Song PLUS | 2022 | 1.5L Displacement, Luxury (Black-Brown Interior) |
| BYD | Song PLUS EV | 2020 | Luxury Y (Blue-Grey Interior) |
| BYD | Song PLUS EV | 2021 | Flagship Y (Blue-Grey Interior) |
| BYD | Song PLUS EV | 2021 | Luxury Y (Blue-Grey Two-Tone Interior) |
| BYD | Song PLUS EV | 2022 | Flagship Y (Blue-Grey Interior) |
| BYD | Song PLUS EV | 2022 | Luxury Y (Blue-Grey Two-Tone Interior) |
| BYD | Song PLUS EV | 2023 | Flagship Y (Blue-Grey Interior) |
| BYD | Song PLUS EV | 2024 | All versions |
| 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 10 (Misty-Grey Interior 04) |
| BYD | Yuan Pro | 2023 | Type 20 (Misty-Grey Interior 04) |
| BYD | Yuan Pro | 2024 | Type 10 (Misty-Grey Interior 04) |
| BYD | Yuan Pro | 2024 | Type 20 (Misty-Grey Interior 04) |
24 vehicle versions. Scroll inside the box to see them all. 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.
Combination Switch with Clock Spring for BYD Yuan Pro & Song PLUS EV, OE 12840343-00
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
Steering column combination switch for the BYD Yuan Pro (2018 to 2024), Song PLUS EV (2020 to 2024), Song PLUS (2020 to 2022) and more, carrying OE 12840343-00 and reference SA2FC-3774010K-E1. The black plastic assembly pairs the left lighting and indicator stalk with the right wiper stalk around a central clock spring rotor. Mounted on the steering column behind the wheel, this stalk switch controls lights, turn signals and wipers. Fit a replacement when a stalk function fails.
Technical Details
| Specification | Value |
|---|---|
| Condition | New |
| Quality line | Original/Genuine |
| Material | Plastic |
| Colour | Black |
| Mounting position | Interior |
| Amount in delivery | 1 piece |
| Specification | Value |
|---|---|
| OE references | 12840343-00 · SA2FC-3774010K-E1 |
| Approx. weight (packed) | Under 1 kg |
| Approx. packaging dimensions | 43 x 22 x 19 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 12840343-00
Which number should I be matching, the one on my old unit or the one here?
Either, because this combination switch carries two references. The OE number is 12840343-00 and the alternative reference is SA2FC-3774010K-E1. One or the other turns up on labels and on paperwork, and the two look unrelated even though they point at the same item. If the string you have read matches one of them, you are on the correct listing. If it matches neither, stop there and use the quote route with a photograph of the old part and its label, since this page can only be checked against the two references shown.
What is the delivery timing on this one?
Allow 8 to 28 days for delivery, counted from your order to your door. Nothing on this page shortens either of them. Keep the car usable until the unit is physically with you, and if a fixed date matters, raise it through the quote route before you order rather than once the order is placed. The shipping cost for your country is shown on this page and confirmed at checkout before you pay.
What is this combination switch made of?
This assembly is made from plastic. The description names the clock spring as part of it, so it is supplied and replaced as one unit rather than in pieces. Before ordering, compare the connector layout on your old unit with the images here, and keep the new one boxed until the column is ready.
Will this need finishing to match my cabin trim?
The colour for this unit is black, and it is fitted in the cabin where the driver can see it. No painting or finishing is carried out at our end, and only one colour is supplied under this OE number, so the item you receive is the black one shown here. There is no shade to choose. If the trim in your car is a paler finish and you want to know whether black is the correct build for it, put a photograph of the old part and its label through the quote route and we will look at the fitment table first.
Whereabouts is this part fitted?
The mounting position is the interior, so this is a cabin item and not something reached from under the bonnet or from beneath the car. No left or right side applies to it, which means one version covers a given car rather than a handed pair. Take the old unit out only once the replacement is on the bench in front of you, and check the plugs on the loom against the images on this page as you go. If anything differs, use the quote route with a photograph of the old part and its label.
Why is no Aftermarket option shown for this switch?
Because none is available. BYD is the manufacturer of the Original/Genuine version and no aftermarket manufacturer exists under OE number 12840343-00, so the second tier stays empty and the page shows the genuine unit alone. The price you can see belongs to that version. If an aftermarket equivalent is added later it will appear here as a second option beside the first. Until then, order the version shown, or ask us through the quote route to look under the alternative reference for you.
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 28 days, depending on the option you choose at checkout. Shipping to Hong Kong SAR: from $13.70 (Economy), from $21.25 (Express), confirmed at checkout before you pay.





