BYD Seal DM-i Parts
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Symptom Finder: Known Weak Points
| What you see or hear | Check first |
|---|---|
| Engine warning light while the petrol engine is running | Start with the lambda and emission sensors, then the EGR parts. Confirm whether the car has the 1.5L or the 1.5T first, since the two engines take different parts. |
| Coolant warning or a falling coolant level | Check the coolant hoses, the expansion tank and the temperature sensors. The car cools an engine, a motor and a battery, so trace the leak to its circuit before ordering, then match the part by OE number. |
| Ticking or rattle from the engine bay when the engine starts | Check the timing drive and the engine mounts. The naturally aspirated and turbo engines use different timing parts, so read the engine code before ordering. |
| Surround-view or parking camera image missing | Check the camera and its connector. Some Glory Edition cars from 29 February 2024 gained a 360-degree camera system, so match the camera by OE number rather than by trim name. |
| Rear brake pistons will not wind back during a pad change | The electronic parking brake has to be put into service mode with a diagnostic tool before the rear pistons will retract. Do not force them back. |
| A part bought for a Seal 07 DM-i or Seal U DM-i does not fit | Those are different cars with different powertrains or bodies. Reorder against the OE number on the old part from this car. |
Most Replaced Parts on the Seal DM-i
- Cylinder block and head componentsThe two engines take different parts, so identify which one is fitted before ordering
- Coolant hoses, expansion tanks and sensorsSeparate circuits cool the engine, motor and battery, so trace a leak before ordering
- Timing drive componentsThe naturally aspirated and turbo engines use different timing parts
- EGR and secondary air partsEmission hardware on the petrol engine, matched to the engine fitted
- Lambda and emission sensorsThe petrol engine keeps full emission sensing even when it runs little
About BYD Seal DM-i Parts
The BYD Seal DM-i is a plug-in hybrid saloon. It was first shown as the Destroyer 07 in April 2023 and went on sale in China on 6 September 2023. It is 4,980 mm long on a 2,900 mm wheelbase and drives the front wheels through BYD's DM-i hybrid system, which pairs a front electric motor with a 1.5-litre petrol engine. Two engines were fitted, a naturally aspirated 1.5L and a 1.5T turbo, each with its own motor, and there were two Blade battery packs, 17.6 kWh and 30.7 kWh. That gives the car two sets of needs: engine oil, filters, timing parts and emission sensors on one side, and battery, motor and cooling hardware on the other. Many engine parts differ between the 1.5L and the 1.5T. Every part on this page is listed by its OE number, and matching the number on the old part is the surest way to confirm a replacement fits.
What to know before buying BYD Seal DM-i parts
Start with the name, because this saloon has had three and shares its family name with other cars. BYD showed it at Auto Shanghai in April 2023 as the Destroyer 07, renamed it Seal DM-i in July 2023 and sold it under that name from 6 September 2023. A part listed for the Destroyer 07 refers to the same car. The Seal U DM-i is a different car altogether. It is a taller SUV, known in China as the Song PLUS DM-i, and its body and chassis parts do not suit this saloon.
The Seal 07 DM-i is the easiest one to confuse with this car. BYD launched it on 8 August 2024 with the same 4,980 mm by 1,890 mm body and 2,900 mm wheelbase, but with fifth-generation DM running gear: a 74 kW 1.5L or 115 kW 1.5T engine, a 160 kW or 200 kW front motor, and a 10.08 kWh or 17.6 kWh pack. Treat its engine, motor and battery parts as different, and match any body part by OE number rather than by the similar name. Check the badge on the boot lid. On a car sold from late 2024, also read the build date on the identification plate.
Within the Seal DM-i, the engine is the first split. The naturally aspirated 1.5L, coded BYD472QA, is rated at 81 kW and pairs with a 145 kW motor. The 1.5T turbo, coded BYD476ZQC, is rated at 102 kW and pairs with a 160 kW motor. Filters, timing parts, sensors, intake and exhaust parts all depend on the engine, so identify it before ordering anything for the engine bay.
The battery is the second split, and it does not line up neatly with the engine. The 17.6 kWh pack gives 121 km of NEDC range and the 30.7 kWh pack gives 200 km, and the trim name includes that range figure. The 1.5L was sold with the 121 km pack, while the 1.5T was offered with either, so a 1.5T badged 121 km has the smaller pack. Check the range in the trim name before ordering battery or high-voltage parts.
Wheels were 17, 18 or 19 inch, on 225/55 R17, 225/50 R18 or 235/45 R19 tyres, with the 19 inch wheel kept for the higher trims. Read the size on the tyre sidewall. The Glory Edition update of 29 February 2024 added a 360-degree camera system, adaptive cruise control and wireless charging to some variants, so camera, radar and trim parts can differ between cars of the same trim. For painted panels, order by the colour code on the car rather than by colour name.
Before You Order: 7 Checks
- Check the badge on the boot lid. A listing for the Seal DM-i or the Destroyer 07 suits this car, while the Seal U DM-i and Seal 07 DM-i are different cars, so recheck the listing before ordering.
- Match the OE number on the part you are replacing to the OE number on the listing, and order only when they agree.
- Identify the engine before ordering filters, timing or sensor parts. BYD472QA is the 1.5L and BYD476ZQC is the 1.5T.
- Read the range figure in the trim name, 121 km or 200 km, before ordering battery or high-voltage parts, since the 1.5T was sold with either pack.
- Read the tyre size on the sidewall before ordering tyres or rims, since 17, 18 and 19 inch wheels were fitted.
- On a car built around mid 2024, read the build date on the identification plate before ordering engine, motor or battery parts.
- Order painted panels by the colour code on the car rather than by colour name.
Generations and Facelifts
The story starts at Auto Shanghai in April 2023, where BYD showed this saloon as the Destroyer 07. In July 2023 it was renamed Seal DM-i, and it went on sale on 6 September 2023 in six variants as a plug-in hybrid alongside the fully electric Seal. It launched with two engines, the 81 kW naturally aspirated 1.5L and the 102 kW 1.5T turbo, and two Blade battery packs of 17.6 kWh and 30.7 kWh, giving 121 km or 200 km of NEDC electric range.
On 29 February 2024 BYD introduced the Glory Edition. It kept the same six variants and the same body, and the launch coverage reported the core specifications as unchanged. Some variants gained a 360-degree camera system, adaptive cruise control and 50 W wireless phone charging. For parts, this means engine, motor, battery and body parts carry across the update, while cameras, radar, the charging pad and the trim around them can differ from an earlier car of the same trim.
On 8 August 2024 BYD launched the Seal 07 DM-i. It has a body of the same size but uses fifth-generation DM running gear, with different engines, motors and battery packs, and it followed the Seal DM-i in the range. Some sources treat it as a rename of this car and others as a new model. For a buyer, the safe rule is to treat its powertrain as belonging to a separate car. The Seal 07 DM-i was updated again in 2025, and that update does not affect the Seal DM-i. The Seal DM-i itself never had a facelift. Before ordering engine, motor or battery parts for a car built around mid 2024, read the build date on the identification plate and check the badge on the boot.
BYD Seal DM-i Parts: Frequently Asked Questions
How do I make sure a part fits my BYD Seal DM-i?
Match the OE number. Every part on this site is listed under the OE number printed on the original part, and if the number on the part you are replacing matches the listing, the part fits. That check matters on this car because two engines, two battery packs and an equipment update all change which part is correct, and several other BYD models share the Seal name. If the old part is missing or its number cannot be read, send a photo through the quote form and we will reply within 24 hours, usually sooner.
Was this car ever called the Destroyer 07?
Yes. BYD showed it at Auto Shanghai in April 2023 as the Destroyer 07 and renamed it Seal DM-i in July 2023, before it went on sale on 6 September 2023. The production car was sold as the Seal DM-i, so a part listed under the Destroyer 07 name refers to the same saloon. The name alone does not tell you which engine or battery the car has, so confirm those on the car first, then match the part by its OE number.
Is the Seal U DM-i the same car as the Seal DM-i?
No. The Seal U DM-i is a mid-size SUV, known in China as the Song PLUS DM-i. It is taller and built on a different body, and its panels, glass and suspension do not suit this car. The Seal DM-i is a four-door saloon, 4,980 mm long and 1,495 mm high. English-language searches often bring up the SUV first, so make sure the listing names the Seal DM-i saloon, then confirm the part by OE number.
Will parts from a Seal 07 DM-i fit my Seal DM-i?
Treat them as separate unless the OE numbers match. The Seal 07 DM-i, launched on 8 August 2024, has a body with the same length, width, height and wheelbase. It runs BYD's fifth-generation DM system, with a 74 kW 1.5L or 115 kW 1.5T engine, a 160 kW or 200 kW motor, and a 10.08 kWh or 17.6 kWh pack. Its engine, motor and battery parts are therefore different. Check the badge on the boot. On a car built around mid 2024, read the build date on the identification plate, then order by the OE number on the old part.
How do I tell the 1.5L from the 1.5T?
Look for the engine code. The naturally aspirated 1.5L is the BYD472QA, rated at 81 kW and paired with a 145 kW drive motor. The turbocharged 1.5T is the BYD476ZQC, rated at 102 kW and paired with a 160 kW motor. The turbo engine also has a turbocharger and its pipework, which the 1.5L does not. Filters, timing parts, sensors, gaskets and intake parts all depend on the engine, so identify it before ordering anything for the engine bay, then match each part by OE number.
Which battery pack does my car have?
Read the range figure in the trim name. Cars sold as 121 km have the 17.6 kWh Blade pack, and cars sold as 200 km have the 30.7 kWh pack, both rated on the NEDC cycle. The 1.5L was sold with the 121 km pack, while the 1.5T was offered with either, so the engine does not tell you which pack is fitted. If you do not know the trim name, check the label on the pack itself, then order battery and high-voltage parts by OE number.
Can I fit the 30.7 kWh pack in place of the 17.6 kWh pack?
Plan on replacing like with like. The 17.6 kWh and 30.7 kWh packs give different ranges, and each pack is matched to the car's battery management and cooling hardware, so do not assume a different pack will fit. Order the pack, its modules and any high-voltage parts by the OE number on the part being replaced. If you are thinking about anything other than a direct replacement, send the details through the quote form and we will reply within 24 hours, usually sooner.
What changed with the Glory Edition?
The Glory Edition arrived on 29 February 2024. It kept the same six variants and the same body, and the launch coverage reported the core specifications as unchanged, so engine, motor and battery parts are not affected. Some variants gained a 360-degree camera system, adaptive cruise control and 50 W wireless phone charging. Those features add cameras, radar and trim that an earlier car of the same trim may not have. Read the build date on the identification plate, then match cameras, sensors and trim by OE number.
What tyre sizes does the Seal DM-i use?
Three sizes were fitted: 225/55 R17, 225/50 R18 and 235/45 R19. The 19 inch wheel was kept for the higher trims. Because the size depends on the trim, read it on the sidewall of the tyres already fitted rather than guessing from the model name, and order rims, tyres and any wheel trim to match. If a previous owner has changed the wheels, go by what is fitted now and match the rims by OE number.
It is a plug-in hybrid. Does it still need regular servicing parts?
Yes. Both versions have a 1.5-litre petrol engine, and it needs engine oil, an oil filter, an air filter and spark plugs like any other petrol engine, along with its lambda and emission sensors. Cars charged at home may run the engine less often, but the engine still ages, and short, infrequent runs are hard on oil and sensors. Follow the service schedule for the engine fitted, and order filters and plugs by the OE number for the 1.5L or the 1.5T.
Is the Seal DM-i the same as the electric BYD Seal?
No. The electric Seal has no engine and is driven by one or two electric motors. The Seal DM-i is a front-wheel-drive plug-in hybrid with a petrol engine and a front motor, and at 4,980 mm it is also the longer car. The two share a family name and a similar look, but do not assume body panels, lights or running gear interchange. Order by the OE number on the part you are replacing, and send a photo through the quote form if that number is missing.
Does changing the rear brake pads need special tools?
Usually a diagnostic tool is needed. The Seal DM-i has an electronic parking brake, and the rear caliper pistons have to be retracted through the parking brake service mode before new pads will fit. Forcing them back can damage the caliper. Once the pads are in, the system is set up again with the same tool. Wheel size varies between trims, so match pads, discs and calipers by the OE number on the parts being replaced.