BYD Dolphin, Dolphin Mini & Seagull Rear Brake Disc – 249mm
This 249 mm rear brake disc is a direct replacement for the BYD Dolphin, Dolphin Mini and Seagull. The solid, oiled and coated design delivers reliable braking performance with good corrosion protection — important for UK roads and weather.
Replacing worn rear discs restores consistent pedal feel and helps prevent uneven pad wear.
Key Benefits
- Restores reliable rear braking performance
- Solid disc construction for everyday EV use
- Oiled and coated surface for corrosion protection
- Direct fit replacement
- Suitable for Dolphin, Dolphin Mini and Seagull
Specifications
- Outer Diameter: 249 mm
- Brake Disc Thickness: 9 mm
- Minimum Thickness: 7 mm
- Brake Disc Type: Solid
- Surface: Oiled and coated
- Centre Diameter: 55 mm
- Height: 26 mm
- No. of Wheel Bolt Holes: 4
- Pitch Circle Diameter: 100 mm
Compatibility
Fits the following models:
- BYD Dolphin (2021 onwards) – 70 kW / 95 hp
- BYD Dolphin Mini (2023/2024 onwards) – 55 kW / 75 hp
- BYD Seagull (2023 onwards) – 55 kW / 75 hp
Replaces OEM part numbers: 13423445-00 and EM2E-3502111
Aftermarket Part Number – Febi – 1004423
Please provide your vehicle registration number if you need exact confirmation of fitment.
Installation
Professional installation recommended. Always replace rear brake discs in pairs and inspect or renew the pads at the same time for balanced braking and best long-term results.
Pro tip: After fitting new discs, bed them in correctly so the pads and discs bed together evenly.
Explore More BYD Parts
| Attributes | |
|---|---|
| Brake Disc Thickness | 9 mm |
| Brake Disc Type | solid |
| Centre Diameter | 55 mm |
| Height or Thickness | 26 mm |
| Minimum Thickness of Brake Disc | 7 mm |
| No. of Wheel Bolt/Stud Holes | 4 |
| Outer Diameter | 249 mm |
| Pitch Circle Diameter | 100 mm |
| Surface | oiled and coated |
| Suitable to replace | Reference(s) |
|---|---|
| BYD | 13423445-00 | EM2E-3502111 |
| Model | Submodel |
|---|---|
| Dolphin (BY) 2021 – | (E) – 70 kW / 95 hp |
| Dolphin Mini (BY) 2024 – | (E) – 55 kW / 75 hp |
| Dolphin Mini (NA) 2023 – | (E) – 55 kW / 75 hp |
| Seagull (BY) 2023 – | (E) – 55 kW / 75 hp |
BYD Dolphin & Seagull Rear Brake Disc FAQs
Which models does this rear brake disc fit?
Fits BYD Dolphin (2021 onwards), Dolphin Mini (2023/2024 onwards) and Seagull (2023 onwards). Please provide your vehicle registration number if you need exact confirmation.
Is this a single disc or a pair?
This is a single disc. Order two discs to replace both sides of the rear axle.
Should I replace the pads at the same time?
Yes – it is highly recommended to inspect or renew the rear pads when fitting new discs for balanced braking performance and safety.
Do I need a wheel alignment after fitting?
No – brake disc replacement does not normally require a wheel alignment.
Is this an original BYD part or aftermarket?
This is a high-quality aftermarket rear brake disc designed as a direct replacement for OEM part numbers 13423445-00 and EM2E-3502111.
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