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 A-Pillar Reinforcement Panel for BYD Seal 05 DM-i, OE 18591109-00
Price shown without any local sales tax. Shipping is shown on this page and confirmed 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 A-pillar reinforcement panel assembly (A-pillar inner brace) for the BYD Seal 05 DM-i 2025-2026, Qin PLUS DM-i 2025-2026 and Seal 05 DM-i Smart Driving 2024-2026, plus more. Stamped from coated steel, this structural body panel forms the load path between the cowl and roof rail and carries the front door hinge and wiring feed-throughs. It matches OE 18591109-00 and reference HAD-5401110/77, with factory weld flanges and locating holes reproduced for accurate collision repair.
Technical Details
| Specification | Value |
|---|---|
| Condition | New |
| Quality line | Original/Genuine |
| Material | Metal |
| Mounting position | Exterior, Front Left |
| Amount in delivery | 1 piece |
| Specification | Value |
|---|---|
| OE references | 18591109-00 · HAD-5401110/77 |
| Approx. weight (packed) | Under 3.5 kg |
| Approx. packaging dimensions | 87 x 34 x 15 cm |
| Country of origin | China |
| Vehicle type | Passenger Car |
Packaging dimensions and weight are approximate and for orientation only. Shipping to Hong Kong SAR is shown above and confirmed at checkout.
Frequently Asked Questions: OE 18591109-00
Is this the left or right A-pillar reinforcement panel?
This listing covers the left side, fitted at the front of the car. To be sure it is right for your BYD Seal 05 DM-i, open the fitment table on this page and check it against your model details before ordering. A left and a right reinforcement panel are not the same piece, and fitting the wrong side means the mounting points will not line up. A minute spent on the table now saves a wasted trip to the garage later.
What if the number on my old panel does not match 18591109-00?
If the number stamped on your old part does not match 18591109-00, do not assume this is still the right panel to order. Check the photographs on this page against the panel you are removing, looking at the shape of the reinforcement and how it fits into the pillar, since a similar looking panel from a different build can carry a different OE number. Also listed as HAD-5401110/77, so that reference is worth checking too. Ordering on the OE number alone is the safest way to avoid a mismatch.
How is a part this size delivered?
This panel's packaging details are shown on this page. Delivery takes 8 to 28 days from your order to your door. Have the model and the model year ready, as written on your registration document, before you place the order. Read them straight off the document rather than from memory, and keep them to hand when you complete the order. The shipping cost for your country is shown on this page and confirmed at checkout before you pay.
What is the A-pillar reinforcement panel made of?
Metal is what this reinforcement panel is made from, not plastic or composite, which makes it a structural piece rather than a trim item, and it comes supplied new rather than reconditioned. Because it forms part of the pillar structure, it is not something to fit approximately and hope for the best. The shape and mounting points need to match exactly. Before ordering, find the number stamped on the part you are taking off and check it reads 18591109-00, or the alternative reference HAD-5401110/77, so you know you are ordering the right one.
Related Parts
How Ordering Works
Your order is packed and shipped tracked, and the import duty and VAT that apply to your destination are calculated at checkout. The final gallery image on this page is the process card showing each delivery step. Delivery to Hong Kong SAR: 8 to 28 days, depending on the option you choose at checkout. Shipping to Hong Kong SAR: from $23.70 (Economy), from $37.40 (Express), confirmed at checkout before you pay.