BYD Seal U vs Song Plus Parts: SA3 OE & Fitment Guide

A European workshop searching for BYD Seal U parts will quickly encounter another name: BYD Song Plus.

That is not a coincidence.

The European Seal U belongs to the same SA3 vehicle family as the Chinese-market Song Plus, and many replacement parts continue to use SA3-series OE references.

However, one of the most common sourcing mistakes is turning that relationship into a much broader assumption:

"If it fits a Song Plus, it fits every Seal U."

That is not a safe rule.

The better way to understand the relationship is:

Seal U and Song Plus are closely related catalogue families, but individual part fitment must still be checked by OE number and vehicle specification.

Why Does the Same Vehicle Have Different Names?

BYD has used different names for closely related models across export markets.

For European buyers, Seal U is the familiar name.

In China, workshops and suppliers are more likely to know the vehicle as Song Plus.

In other global markets, related export naming can also include Sealion 6.

For a Chinese parts supplier, the term SA3 is often more useful than any of these marketing names because it appears throughout the OE numbering system.

That is why searching both:

BYD Seal U parts

and:

BYD Song Plus SA3 parts

can produce useful results.

Does SA3 Mean the Part Is Automatically Interchangeable?

No.

The SA3 family is an important starting point, but the same vehicle family has been produced with multiple:

• powertrains;

• model years;

• facelifts;

• production revisions;

• destination-market specifications.

A good example is the suspension.

Song Plus EV catalogues commonly show:

SA3EB-2905100 / SA3EB-2905200

for front shock absorbers.

DM-i catalogues also show:

SA3HA-2905100 / SA3HA-2905200

for comparable positions.

[图] byd-seal-u-shock-absorber-sa3eb-2905100.jpg

The parts may look extremely similar online, but the different OE family is a reason to check rather than guess.

EV vs DM-i: Which Parts Are More Likely to Differ?

The greatest differences are naturally found around the powertrain and supporting systems.

Extra care should be taken with:

• engine-related components;

• hybrid-system components;

• cooling circuits;

• AC / thermal-management components;

• high-voltage components;

• charging-related components;

• drivetrain parts.

But the distinction can also appear in unexpected areas.

Shock absorbers and headlights, for example, can carry different OE suffixes between EV and DM-i versions.

Therefore, a body or chassis part should not automatically be classified as "shared" simply because it is not part of the engine.

Some Parts Really Are Shared

There are also examples where the same reference appears across multiple versions.

Front control arms such as:

• SA3F-2904010A

• SA3F-2904020A

are listed by public parts databases for both Song Plus EV and Song Plus DM-i applications.

byd-seal-u-control-arm-sa3f-2904010a

Some body panels also cross markets.

Current UK Seal U DM-i listings use Song Plus-style references including:

• Front left door shell — SA3F-6101010/70

• Front right door shell — SA3F-6101019/70

byd-seal-u-front-door-sa3f-6101010-70

This is why the correct conclusion is not "nothing interchanges".

The correct conclusion is:

Interchangeability is part-specific.

Headlights Show Why Suffixes Matter

Lighting is one of the clearest examples.

Older Song Plus catalogue references include:

• SA3F-4121010B

• SA3F-4121020B

byd-seal-u-headlight-sa3f-4121010b

Public fitment information commonly associates these B-suffix versions with EV applications.

DM-i catalogues also contain C and E suffixes, while current UK Seal U DM-i listings show later SA3HK references.

The first part of the number may look almost identical, but that suffix or prefix change can represent a meaningful revision.

Never remove the suffix when sending an OE enquiry.

SA3F-4121010

and:

SA3F-4121010B

should not automatically be treated as the same reference.

What About Left-Hand Drive and Right-Hand Drive?

This is particularly important for European sourcing.

Most continental-European Seal U vehicles are LHD.

The UK and Ireland use RHD.

Some exterior body panels may be unaffected by steering position, but other components can differ.

Pay additional attention to:

• headlights;

• steering gear;

• dashboard components;

• pedal assemblies;

• wiring;

• interior trim;

• mirrors with market-specific electronics.

For a British Seal U, simply finding a part that fits a Chinese LHD Song Plus is not sufficient evidence.

The Best Way to Identify a Seal U Part

For professional procurement, use as many identifiers as possible.

The ideal enquiry includes:

1. VIN

2. Complete OE number

3. Original-part label

4. Product photo

5. Connector / mounting-point photo

6. EV or DM-i

7. LHD or RHD

8. Left/right and front/rear position

9. Destination country

When the OE number is unknown, VIN and photos can often provide enough information to begin the catalogue check.

We Can Check Parts That Are Not Listed Online

Hella Auto's current online catalogue includes many Song Plus / Seal U references, but it is not intended to represent every part available through our sourcing network.

If the correct European Seal U OE is different from the Song Plus part currently shown online, send us the vehicle information.

We can check alternative references for:

• DM-i;

• EV;

• LHD;

• RHD;

• later production revisions.

The goal is not to force an existing website product onto the enquiry.

The goal is to identify the correct part.

Frequently Asked Questions

Is the BYD Seal U the same car as the Song Plus?

They belong to the same vehicle family and share many components and SA3 references, but individual part compatibility still needs to be confirmed.

Can I search for Seal U parts using Song Plus OE numbers?

Yes. Song Plus references are often useful for locating the correct part family. Final fitment should then be checked against the Seal U VIN and specification.

Are EV and DM-i body parts the same?

Some are shared, while others are revised between versions. Do not assume interchangeability purely because the component is a body part.

Are LHD and RHD headlights interchangeable?

This should not be assumed. Headlamp specification and beam pattern can be market-specific.

What if the OE on my European Seal U is not on your website?

Send us the OE, VIN and product photo. We can check other available sourcing references.

Unsure Whether a Song Plus Reference Fits Your Seal U?

Send us the VIN + full OE number + original-part photo. We can check EV / DM-i and LHD / RHD specification before quotation.

By Hella Auto Parts