First Compression Ring for BYD Seal 05 DM-i, OE 12798686-00

This first compression ring fits a good number of BYD models, so do not take the model name as proof on its own. Open the fitment table on this page and check your model against your build year. Then compare OE 12798686-00 with the reference on the packaging or paperwork from the last time this engine was apart. Rings are position specific within the piston, so the wrong reference is an expensive mistake. If your car is missing from the table, ask us on the quote route before ordering.

Both lead to the same listing. Compare what you have been given against each. A ring will not be marked in any readable way itself, so paperwork or the old box is what you should be reading. If neither reference matches, send the number to us with your model and build year and we will check it. Keep the old first compression ring until the new one is fitted, in case the two need comparing.

The delivery time is 8 to 25 days, from order to door. A rebuild held up by one small item is a common and avoidable problem, so order this alongside the rest of what you need. If a particular date is critical, speak to us about OE 12798686-00 first. The shipping cost for your country is shown on this page and confirmed at checkout before you pay.

This ring is metal, and nothing more precise is given. The point that matters to you is handling. It is supplied new, and a ring is easily distorted by careless storage or by being sprung further than it needs when fitting, so leave it packaged until the piston is ready. The packaging details for it are shown on this page. No coating, gap or width specification is published for this reference.

This ring sits in the engine bay, and within the engine it belongs to the piston and ring group. That is internal work, reached only once the engine is opened up, so it is bought as part of a planned job rather than on its own. No fitting order or orientation guidance is supplied with the part. Confirm the fitment on this page before ordering, then leave the assembly detail to whoever is building the engine on your particular vehicle.

Not at present. For OE 12798686-00 we list the Original/Genuine part made by BYD, and the Aftermarket tier holds nothing against it. That comes down to what can be sourced for the reference. When both tiers are populated they are priced together on this page and you make the call. Here there is a single version at the price shown on this page. If you would like us to look for an alternative reference covering the same engine, ask through the quote route with your model and build year.