Brake Fluid Reservoir for BYD Sealion 06 & Xia, OE 12686089-00

It does. The title calls out the BYD Sealion 06 and the Xia, but this reservoir fits a much wider group of BYD models and a very large number of individual vehicle variants below them. That breadth is a reason to check rather than to assume. Look at the fitment table on this page and find your own variant, then confirm that OE number 12686089-00 is the reference given for it. If you are unsure, send a photograph of the old reservoir and its label through the quote route and we will confirm it against the OE number.

Check it against both references before deciding. This reservoir carries two references, OE 12686089-00 and also STHA-3540020, and either one brings you to this same item. The marking on a reservoir is often moulded into the body of it and can be hard to read once the engine bay has been in service for a while, so clean the surface and use a light. Whichever of the two you find, quote it back to us through the quote route along with a photograph of the part so the identification is confirmed against the OE number.

Yes. This part is safety critical, and it belongs to the braking system, so it is not a job to take on at home unless you are already qualified to work on brakes. Have it fitted by a competent professional who can complete the work properly and check the system afterwards. When you send the enquiry through the quote route, it is worth telling us who will be carrying out the work and where, because that can affect the delivery arrangement we come back with.

Delivery time is confirmed with your quote. It is also worth setting the new reservoir next to the old one before you hand it to your fitter, so any difference is spotted early rather than mid job. If you need a firmer date for booking a garage slot, ask us through the quote route. The shipping cost is confirmed with your quote.

This reservoir is plastic, supplied new. The material is worth knowing when your fitter is planning the job, because a plastic body is handled differently in the engine bay from a metal one. Mention the material and the OE number 12686089-00 when you contact us through the quote route so everyone is working from the same description.

In the engine bay, which is where this reservoir is mounted. That is the only location detail given for this part, and no side is given for it, so there is no left or right version to choose between. Open the bonnet and identify the existing reservoir before you enquire, then read the reference off it. Having the location and the reference confirmed makes the enquiry through the quote route much quicker to answer, and it removes any doubt about which item you are asking for.

No. Only the Original/Genuine part from BYD is available under this OE number, with no Aftermarket equivalent offered as a second choice. On parts where both tiers exist, both are shown on the page and you decide between them. Here there is a single route, and it is the price shown on this page. If you want to confirm fitment first, send OE number 12686089-00 through the quote route along with a photograph of the old part and we will come back with what is available.