BYD Seal U Suspension & Steering Parts: OE Guide for European Workshops

The BYD Seal U has quickly become a significant vehicle in Europe. In 2025, the plug-in hybrid version recorded 72,667 European registrations, making it the region's best-selling PHEV for the year.

As more Seal U vehicles enter regular workshop use, suspension and steering parts are becoming an increasingly relevant sourcing category.

There is one complication, however: Seal U, Song Plus EV and Song Plus DM-i do not always use the same suspension OE references.

This matters particularly for UK workshops. The UK-market Seal U is sold as the DM-i plug-in hybrid and uses right-hand-drive specification, while Song Plus parts found in Chinese catalogues may belong to EV, DM-i or older domestic-market versions.

The safest approach is therefore not to search by vehicle name alone, but to combine the OE reference, VIN, production version and original-part label.

Why Seal U Suspension Gets So Much Attention

Several British road tests have commented on the Seal U's unusually soft chassis calibration.

Reviewers describe noticeable body movement, light steering and a suspension setup that takes time to settle after larger road undulations.

That observation needs to be understood correctly.

A softly tuned suspension is not evidence that the shock absorbers or control arms have failed. It is part of the vehicle's factory chassis character.

A workshop should only replace suspension components after an actual inspection identifies a repair requirement such as:

• fluid leakage from a damper;

• excessive play in a joint or bush;

• accident or kerb-impact damage;

• bent suspension components;

• damaged mounting points;

• abnormal mechanical noise;

• failed wheel-alignment checks;

• deterioration confirmed during workshop inspection.

Replacing a healthy OE damper simply because the driver finds the standard ride soft should not be presented as a repair.

EV and DM-i Shock Absorbers: Check the Prefix Carefully

One of the most useful things buyers can learn about this vehicle is that apparently similar shock absorbers may carry different OE families.

Public Song Plus catalogues commonly show the following references:

 byd-seal-u-shock-absorber-sa3eb-2905100

byd-seal-u-shock-absorber-sa3eb-2905200

This is exactly why a generic search for "BYD Seal U shock absorber" can produce misleading results.

Some aftermarket catalogues cross-list certain SA3EB references across both EV and DM-i applications, while others separate EV and DM-i into different OE families.

For a European workshop, especially one repairing a UK Seal U DM-i, the vehicle name alone is not enough to resolve that conflict.

Before quotation, we recommend checking the VIN and the label on the original damper.

Control Arms and Chassis Joints

Control arms are somewhat easier to identify because several SA3 references appear across more than one Song Plus powertrain.

Two important examples are:

• Left front lower control arm — SA3F-2904010A

• Right front lower control arm — SA3F-2904020A

Public fitment databases associate these references with both Song Plus EV and Song Plus DM-i applications.

 byd-seal-u-control-arm-sa3f-2904010a

byd-seal-u-lower-control-arm-sa3f-2904020a

Related chassis components in the SA3 family include:

• lower-arm ball joints;

• control-arm bushes;

• anti-roll / stabiliser bars;

• stabiliser links;

• steering knuckles;

• top mounts and bearings;

• rear suspension arms.

Even where a reference appears to be shared, workshops should still confirm production date and vehicle specification. A shared platform does not guarantee that every revision remains identical throughout the model lifecycle.

Steering Gear and Tie-Rod Components

Another useful Song Plus reference is:

Steering gear with tie rods — SA3HA-3401010

Public parts databases list this steering gear for both Song Plus EV and Song Plus DM-i applications from earlier model years.

That still does not establish universal fitment for every European Seal U.

The UK introduces another variable: right-hand drive.

A steering component confirmed on an LHD Song Plus should never automatically be presented as suitable for an RHD Seal U simply because the basic model name is the same.

For steering enquiries, we therefore recommend sending:

• VIN;

• original OE number;

• steering-side specification;

• photo of the original label;

• connector or motor details where applicable;

• destination country.

What Should Be Checked Before Ordering Suspension Parts?

For a straightforward suspension enquiry, the following information usually saves the most time:

1. VIN

2. Original OE number

3. Front or rear

4. Left or right

5. Seal U DM-i, Seal U EV or Song Plus

6. LHD or RHD

7. Production year

8. Photo of the original part and label

For shock absorbers, a clear label photo is particularly valuable because visually similar assemblies may belong to different powertrain or chassis revisions.

For arms and joints, a photo of the mounting points can help resolve unclear catalogue descriptions.

UK Seal U DM-i vs Mainland-European Vehicles

The UK is a useful example of why the European Seal U aftermarket cannot be treated as one single specification.

UK cars are:

• Seal U DM-i;

• plug-in hybrid;

• right-hand drive.

Continental European vehicles can include:

• DM-i PHEV;

• fully electric Seal U;

• left-hand-drive specifications.

Therefore, a part sourced successfully for a German, Spanish or French Seal U should not automatically be assumed to fit a British car, and vice versa.

This is especially important for steering, lamps, electrical parts and other specification-sensitive components.

Need a Suspension OE We Have Not Listed?

Our online Song Plus / Seal U catalogue contains a growing range of SA3 suspension and steering references, but an unlisted OE number does not necessarily mean the part cannot be sourced.

If your workshop or parts business needs a reference that is not shown online, send us:

VIN + OE number + original-part photos + quantity + destination country

We can check the available sourcing channels and confirm the appropriate reference before quotation.

For multi-part enquiries, distributors are also welcome to send a complete OE list rather than submitting each component separately.

Frequently Asked Questions

Does the BYD Seal U have a suspension problem?

Professional reviews frequently describe the standard suspension as soft and the steering as light, but that is a chassis-tuning characteristic rather than proof of a mechanical fault. Replacement should be based on inspection and diagnosis.

Are SA3EB shock absorbers suitable for the UK Seal U DM-i?

Do not assume so. SA3EB shock-absorber references are commonly associated with Song Plus EV catalogues, while DM-i catalogues also show SA3HA references. Send the VIN and original damper label for confirmation.

Are Song Plus EV and DM-i control arms the same?

Some control-arm references, including SA3F-2904010A and SA3F-2904020A, appear in public databases for both EV and DM-i applications. Final fitment should still be confirmed before ordering.

Can the same steering rack fit LHD and RHD vehicles?

This should not be assumed. Steering layout is one of the components most likely to be market-specific. Confirm VIN and steering configuration.

What if I only have a photo and no OE number?

Send the VIN and clear photos of the complete part, label, mounting points and connectors. These details can be used to begin the identification process.

Looking for a Seal U or Song Plus Suspension Part?

Send the VIN, OE number and original-part photo with your enquiry. We can check EV / DM-i and market specification before quotation.

By Hella Auto Parts