Verified Fitment
| Brand | Model | Year | Variant / type code |
|---|---|---|---|
| BYD | 2nd-Gen Qin PLUS DM-i Smart Driving | 2024 | All versions |
| BYD | 2nd-Gen Qin PLUS DM-i Smart Driving | 2025 | All versions |
| BYD | 2nd-Gen Qin PLUS EV Smart Driving | 2024 | All versions |
| BYD | 2nd-Gen Qin PLUS EV Smart Driving | 2025 | All versions |
| BYD | 2nd-Gen Qin PLUS EV Smart Driving | 2026 | All versions |
| BYD | Qin PLUS DM-i | 2025 | All versions |
| BYD | Qin PLUS DM-i | 2026 | All versions |
| BYD | Seal 05 DM-i | 2025 | All versions |
| BYD | Seal 05 DM-i | 2026 | All versions |
| BYD | Seal 05 DM-i Smart Driving | 2024 | All versions |
| BYD | Seal 05 DM-i Smart Driving | 2025 | All versions |
| BYD | Seal 05 DM-i Smart Driving | 2026 | All versions |
Type codes are printed on the vehicle identification plate. Not sure? Send us the number from the old part over WhatsApp and we confirm it against the factory catalogue before you order.
Left B-Pillar Roof Side Rail for BYD Seal 05 DM-i, OE 18299109-00
Price shown without any local sales tax. Shipping is calculated at checkout. Import taxes and duty in Hong Kong SAR are not included and may be charged when the parcel arrives.
About This Part
Left-hand B-pillar roof side rail assembly (OE 18299109-00, ref HAD-5401270/70) for the latest BYD Seal 05 DM-i and Qin PLUS DM-i 2025-2026, along with the Seal 05 DM-i Smart Driving and second-generation Qin PLUS EV Smart Driving 2024-2026. This pressed-steel roof rail panel forms the upper left bodyside structure, tying the B-pillar into the cantrail and giving the mounting flange for the roof and door seals. It is a stamped structural repair panel for collision and bodyshell work. Left (driver-side) part only. Weld-in fitment by a qualified body shop.
Technical Details
| Specification | Value |
|---|---|
| Condition | New |
| Quality line | Original/Genuine |
| Material | Metal |
| Mounting position | Exterior Left |
| Amount in delivery | 1 piece |
| Specification | Value |
|---|---|
| OE references | 18299109-00 · HAD-5401270/70 |
| Approx. weight (packed) | Under 7 kg |
| Approx. packaging dimensions | 166 x 39 x 14 cm |
| Country of origin | China |
| Vehicle type | Passenger Car |
Packaging dimensions and weight are approximate and for orientation only. Delivery to Hong Kong SAR is quoted with the part.
Frequently Asked Questions: OE 18299109-00
Is this rail definitely the left side, and how do I check before I order?
Yes, this listing is for the left B-pillar roof side rail, OE number 18299109-00. Before you order, have the old rail in front of you and confirm it matches this one for side and fitment, since ordering from memory is where mix-ups happen. If you are unsure which side you are looking at, checking the part while it is still in the car, or once removed, will settle it. Match the OE number if you can find it stamped or printed on the old rail.
What if the number on my old part is different?
No, do not fit it if the number on your old part does not match 18299109-00. Open the photographs on this page and check the shape, the mounting points and the panel edges against the rail you have taken off the car. Numbers can look close without being identical, so use the physical details as your check, not just a glance at the digits. If what you see in the photographs does not match your old part, hold off and look again rather than ordering on a guess.
How does a part this size get delivered to me?
This is a longer body panel. The packaging details are shown on this page. Use the quote route on this page to have delivery set up correctly, rather than placing a standard order. Delivery time is confirmed with your quote. Getting the quote in early keeps things moving without delay at the point of collection or drop off.
What is this part made of?
Metal is what this rail is made from, not plastic or composite. It is supplied new, not reconditioned. If you are working from another catalogue or a supplier list and cannot find it under 18299109-00, try the reference HAD-5401270/70, since this same part is listed under both. Keeping a note of both numbers makes it easier to confirm you are ordering the correct rail rather than searching under one code and coming up empty.
Related Parts
How Ordering Works
Send the OE number and your address using the button above and we come back, within 24 hours and usually sooner, with one delivered price to Hong Kong SAR: the part, carriage on a route that takes it, and the import duty and VAT that apply where you are. Nothing is charged until you accept the quote.