BYD DM-i: what the hybrid system adds to the parts list

A DM-i BYD is not a battery-electric BYD with a smaller battery. It is a vehicle that carries both drive systems, and on the parts list that shows up as addition rather than substitution: everything the electric side needs is still there, and an entire engine-side catalogue is added on top of it. For European workshops this matters now rather than later. The number of DM-i models offered in Europe rises noticeably from 2026, so a garage that has only ever worked on battery-electric BYDs will increasingly meet a car with a familiar badge, a familiar body and an engine under the bonnet. This page sets out which categories the plug-in hybrid adds, what our own index shows inside those categories, and how to specify an order so that the engine-side and electric-side lists do not get mixed up. It is a purchasing page: no repair sequence, no control logic, no diagnostic procedure and no circuit detail appears on it.

1. What gets added, and what does not disappear

The useful way to read a DM-i parts list is as two lists that share a body.

Nothing in the left column goes away. That is the part buyers get wrong: they assume a hybrid is a simplification of one system or the other, when in procurement terms it is both at once. A DM-i order book contains electric-side lines and engine-side lines, and the two have nothing in common except the VIN.

Our own index reflects that mix. In our data we see combustion-side entries sitting alongside entries that only make sense on an electric drive — electric coolant pumps that serve a coolant loop, wheel-speed sensing, and temperature sensing. Which powertrain any single reference belongs to is confirmed per enquiry against the OE number and the VIN; we do not assign it from the listing.

2. The engine-side sensor lines

This is the group that most clearly marks a car out as a hybrid, because none of these functions exist without combustion.

Two things about that table are worth carrying into how you order. The first is adjacency: 10506789-00 and 10506790-00 are consecutive references for different functions, and 10509784-00 sits one digit from a coolant temperature sensor reference. Consecutive numbering indicates related records, not variants of one part. The second is that the family names repeat across the range: our index carries more than one crankshaft pulse sensor line and more than one oil and exhaust pressure line, so a name plus "for a DM-i" still leaves several candidates.

The practical consequence is unglamorous but decisive: read the number off the old part. A description such as "camshaft sensor for a DM-i" is not a specification.

3. Sealing and mounting: the groups behind the engine

Two further families belong to the engine side, and both are multi-reference in our index.

Crankshaft Seal appears four times, including 10472511-00. Engine Mount appears five times, among them 13559894-00 and 13559895-00, which are consecutive. Those two consecutive numbers are a good illustration of how little the numbering tells you: they are neighbours in the data and we still treat them as separate lines, because our index records references and carries no interchange column.

Mounting is where the hybrid penalty lands hardest in purchasing terms. An electric drive unit is mounted; an engine and a transmission are mounted differently, with isolation against a different vibration profile and against a different mass. The five-mounted-reference group in our data is therefore not a puzzle to be solved by guessing which one "looks right" — it is a group that has to be narrowed by number and VIN.

Sealing follows the same rule as everywhere else in this catalogue: a seal is its own line, and assuming one arrives with the part it sits against is how orders come back for a second round.

4. Two heat sources, two coolant circuits

Thermal management is the category that most often trips up a workshop moving from electric to hybrid. A battery-electric car has one thermal job: keep the battery and the drive unit in their window. A plug-in hybrid has that job plus a combustion engine, and it cannot serve both with the same loop. The result is that a single function — moving coolant electrically — appears more than once on the vehicle, and therefore more than once in the catalogue.

In our own data we see five references under Electric Coolant Pump and two more under the related name Additional Electric Coolant Pump. We do not map them to circuits, and we do not state which one serves which loop — our published index has no fitment column, and a pump name does not carry that information. What the group size does tell you is that "electric coolant pump" is not a specification on a DM-i, and that a buyer who orders by name will be asked for the VIN before the quote goes out.

5. Same body, different list — confirm the powertrain first

Naming makes this harder than it needs to be. In Europe the same body is frequently offered in two powertrains and the difference sits in a short suffix: Seal U and Seal U DM-i, Atto 2 and Atto 2 DM-i. Further DM-i designations have joined the line-up, among them Seal 6 DM-i and Dolphin G DM-i. The suffix is small, it is easy to miss in a photograph, and it is easy to drop in an email.

So the ordering rule is simple and it goes before everything else: state the powertrain in words, and send the VIN. The badge tells you the body. The VIN tells you whether there is an engine. Once that is settled, the categories in section 1 sort themselves: the engine-side families either apply or they do not, and the electric-side families apply either way.

For a workshop that has only handled battery-electric BYDs, the adjustment is mostly bookkeeping: your order history for a given body will not contain the engine-side lines, so the first DM-i of a familiar model means building a new set of numbers.

6. What to send

Send the VIN, the powertrain stated in words, and the OE number from the old part including its -00 suffix. Where the label is unreadable, send a photograph of it and of the part in position, plus a note on whether the part sits on the engine side or the electric-drive side — that one detail settles more enquiries than any other. If the job touches a seal, a gasket or a mounting, ask for it as its own line.

We confirm, part number by part number, whether we can supply it. Minimum order value is €50 per shipment; guide prices are shown on the parts pages, and trade and volume pricing on request. Typical dispatch time is confirmed on the quotation; transit depends on the shipping method you choose. If the line you need does not appear in the published index, send us the part number or a photo of the label, and we will check whether we can source it. Browse the electrics and sensors category or the engine cooling category, start from the BYD-compatible parts — OE reference index, or use the enquiry page.

Restraint-system and high-voltage parts are outside the scope of this page.

Short answers

Is a DM-i just an electric BYD with an engine added? In procurement terms, yes — and that is the point. Nothing on the electric side disappears; the engine-side sensing, sealing, mounting, filtration and exhaust categories are added on top.

Which parts in your index only make sense on a DM-i? The engine-side families. Intake Manifold Pressure Sensor 10241010-00, Sensor, Crankshaft Pulse 10506789-00, Sensor, Camshaft Position 10506790-00 and Knock Sensor 10509784-00 all presuppose combustion.

Why is the badge not enough to order from? Because the same body is sold in two powertrains and the difference is a short suffix — Seal U against Seal U DM-i, Atto 2 against Atto 2 DM-i. State the powertrain in words and send the VIN.

Why are there five electric coolant pumps in your index? Because a plug-in hybrid has more than one cooling circuit to serve, and because our index records references without a fitment column. Five references under one name means the number is the only selector.

Are consecutive numbers interchangeable? No. Engine Mount 13559894-00 and 13559895-00 are consecutive and are separate lines. We do not merge them.

Will you explain how the hybrid system works? Not here. This page covers parts identification and purchasing only, and it contains no control logic and no repair or diagnostic procedure.

Where this comes from.

The references and group counts quoted above are taken from GNSGO's own parts index for BYD vehicles — the same list at BYD-compatible parts — OE reference index. Application is confirmed per enquiry against the OE number and the VIN; the published index does not carry model-year fitment, so we do not infer it here, and we do not assign any reference to a powertrain on this page. Model names follow the export designations listed for this project, and the growth in DM-i offerings in Europe from 2026 follows the market facts recorded there. We have not drawn on BYD's copyrighted workshop documentation, and we do not reproduce any manual or wiring-diagram pages. Where our own data does not carry an answer, we say so rather than filling the gap with a plausible one.

This page is general information only. It is not a repair instruction, not a diagnosis of a particular vehicle, and not a substitute for professional advice. Restraint-system and high-voltage parts are outside the scope of this page. Work on high-voltage systems, restraint systems and structural repairs belongs with technicians qualified for it. Confirm the application against the VIN before ordering. Have any work carried out by a suitably qualified workshop.