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 |
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.
Floor Wiring Harness for BYD Qin PLUS DM-i, OE 18090770-00
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
Floor wiring harness for the BYD Qin PLUS, OE 18090770-00 (part number HA5HA-4004300C). This full underfloor loom routes the low-voltage feeds, sensor lines and body connectors along the cabin floor, with the taped main trunk, colour-coded branches, battery leads and keyed multi-pin connectors intact. It fits the 2nd-Gen Qin PLUS DM-i Smart Driving 2024-2025. Also called a floor cable harness or underbody wiring loom, it is the correct replacement for damaged or corroded floor wiring.
Technical Details
| Specification | Value |
|---|---|
| Condition | New |
| Quality line | Original/Genuine |
| Material | Plastic |
| Mounting position | Interior |
| Amount in delivery | 1 piece |
| Specification | Value |
|---|---|
| OE references | 18090770-00 · HA5HA-4004300C |
| Approx. weight (packed) | Under 7 kg |
| Approx. packaging dimensions | 87 x 58 x 27 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 18090770-00
Will this harness fit my BYD Qin PLUS DM-i if the model is only close and not exact?
Yes, this harness fits one model only, the BYD Qin PLUS DM-i, with no other vehicle shown here. If your car is a close relation rather than an exact match, that alone is not enough to order on. Look at the number stamped on the part you are removing, since this harness carries OE number 18090770-00, also known as HA5HA-4004300C. Only a match against that stamped number confirms the fit. Take the old part off first and read its number before you commit to buying this one.
The number on my old harness does not match 18090770-00, what now?
Do not fit it on the strength of the number alone. Check the side, the position and the fixings on your car against the old harness before ordering, since that tells you more than the number by itself. If the side and position match what you see under the trim, and the fixings line up the same way, this is the one you need. If anything differs, hold off and confirm against your own car rather than guessing from the listing.
How does a part this size actually get delivered to me?
Delivery time is confirmed with your quote. The packaging details are shown on this page. Before you order, get the old harness out and have it in front of you. Check the OE number on it against 18090770-00, and note it may also be known as HA5HA-4004300C. Matching that number first means the parcel that turns up is the one that actually fits your car.
Where does this wiring harness fit on the car?
This is an interior part, carrying OE number 18090770-00 for the BYD Qin PLUS DM-i, also shown as 18090770-00 or HA5HA-4004300C. Because a low-voltage harness like this is built to match one specific run of connectors and routing points, fitting the wrong one means connectors that do not line up. Before ordering, check the fitment table on this page against your Qin PLUS DM-i to confirm this harness matches your car, and compare the OE number to the one on your old part if it is still visible.
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.