BYD SEALION 6 Genuine vs Aftermarket Parts

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BYD SEALION 6

This reference outlines the distinctions between using genuine components and aftermarket alternatives for the BYD SEALION 6. As a plug-in hybrid vehicle (PHEV), it features a 1.5-litre petrol engine alongside electric motors and a high-voltage Blade Battery. Understanding the correct replacement components for routine servicing, hardware repairs, and accessories is a vital part of ownership. Please note that trim names, specifications, and pricing policies reflect a compiled dataset from October 2026. BYD Automotive Australia may update variants over time, so every figure and specification must be verified; always consult an authorised BYD dealer or the official BYD Australia website for the most current data.

This independent guide explores service filters, braking hardware, tyres, exterior accessories, and the broader warranty implications under Australian Consumer Law when choosing non-genuine replacement parts.

Contents

High-Voltage Powertrain Components

The BYD SEALION 6 operates on a sophisticated dual-powertrain system, pairing a Xiaoyun 1.5-litre petrol engine (or a 1.5 Ti turbo-charged engine on Premium variants) with advanced electric motors, powered by either an 18.3 kWh or 26.6 kWh BYD Blade Battery. Due to the extreme danger of this system, any repair or maintenance involving the high-voltage hardware must be completed strictly by an authorised BYD dealer or a highly qualified, certified technician. High-voltage orange cables must not be touched or opened by vehicle owners under any circumstances.

Advanced safety hardware — including steering system calibration, airbag deployment systems, and Advanced Driver Assistance Systems (ADAS) — is heavily integrated into the vehicle’s computer networks. ADAS calibration is classified as dangerous work and demands genuine diagnostic equipment and trained personnel. For any complex powertrain queries relating to petrol engine emissions hardware, consult an authorised BYD dealer rather than attempting aftermarket modifications or software tuning, as doing so can compromise the hybrid drivetrain and may void warranty coverage. Confirm with BYD Automotive Australia if you are uncertain whether a proposed modification is supported.

Service Filters and Engine Consumables

Routine logbook maintenance requires the replacement of various filters, fluids, and wear items at scheduled intervals. For interior air quality, the vehicle is equipped with a PM2.5 filtration system on all trims except the Essential variant. The correct procedure and compatible replacement components for any cabin air filtration service should be confirmed by referring to the official owner’s manual, as the official handbook service record sets out the items required at each scheduled interval.

For internal combustion components, owners must be precise about fluid specifications. When researching an engine oil and filter replacement for the petrol engine, do not assume an oil grade or exact litre capacity based on unverified online searches, as these detailed specifications are not stated in the official sales brochure. Refer to the official owner’s manual for the exact engine oil specification, fluid type, and required capacity. Utilising incorrect aftermarket fluids can lead to severe mechanical damage that falls outside official warranty coverage. Additionally, items such as engine air filter elements, fuel filters, spark plugs, and engine coolant are listed in the DM series service record and should be sourced and installed in accordance with the manufacturer’s recommendations; consult an authorised BYD dealer for guidance on compatible genuine and aftermarket options.

Brake Pads and Rotors

The BYD SEALION 6 utilises regenerative braking alongside traditional friction brakes, meaning the wear characteristics will differ from those of a conventional non-hybrid vehicle. The factory chassis setup includes ventilated front brake discs, solid rear brake discs, and floating front brake calipers. Brake pads and rotors are classified as normal wear and tear components.

Should replacement be necessary, aftermarket brake pads may be fitted provided they are subject to manufacturer specifications regarding exact dimensions, thickness, and friction material formulation. However, any brake system maintenance is considered dangerous work and must be performed by a qualified technician. Incorrect installation of aftermarket braking components poses a significant safety hazard and can interfere with integrated systems such as the vehicle’s auto-hold functionality, automatic emergency braking, and rear cross traffic alert and brake features.

Replacement Tyres and Wheels

The factory alloy wheels on the BYD SEALION 6 are fitted with 235/50 R19 tyres, which are supplied as Giti tyres on initial factory delivery. When sourcing BYD SEALION 6 replacement tyres in the 235/50 R19 specification, there are numerous aftermarket options available across premium, mid-range, and budget tyre brands.

The official BYD new vehicle warranty explicitly does not cover tyres; the individual tyre manufacturers’ own warranties apply to any defects. When selecting aftermarket replacement tyres, owners should ensure the load rating and speed index meet the requirements listed on the vehicle’s tyre placard, subject to manufacturer specifications. Furthermore, wheel alignment and wheel balancing are considered items for which a service charge may be made, and these should be carried out by a qualified technician after any tyre change.

Exterior Accessories and Towing Equipment

Adding exterior equipment requires careful consideration of both the vehicle’s physical structure and its 12V auxiliary electrical architecture. Aftermarket towbars and electrical accessories are widely available, but incorrect aftermarket wiring can lead to faults, battery drain, or communication errors across the vehicle’s sensors, including the rear parking sensors, trailer stability control, and blind-spot detection systems.

Because the official BYD brochure does not state the approved towing capacity, maximum tow ball download, or ground clearance metrics, you must confirm with BYD Automotive Australia before purchasing or fitting any towing hardware. Refer to the official owner’s manual for the relevant specifications applicable to your variant, and consult an authorised BYD dealer to ensure you do not exceed the vehicle’s safe operating limits or gross vehicle mass.

Warranty and Australian Consumer Law

The BYD SEALION 6 carries a new vehicle warranty of 6 years or 150,000 km, while the high-voltage traction battery and drive unit are covered for 8 years or 160,000 km. Under Australian Consumer Law, owners have statutory rights that are not displaced by manufacturer warranty terms, though the specifics of how those rights apply to any individual situation should be confirmed with a legal adviser or consumer protection authority rather than treated as legal advice.

The official warranty terms explicitly exclude damage caused by the use of non-BYD genuine or non-recommended parts. If a non-genuine aftermarket accessory or service part causes a direct failure in a related system, that specific repair may be denied under warranty. The warranty does not cover racing use, loading beyond specifications, deep-water wading, or failure to service strictly per the manufacturer’s recommendations. Genuine spare parts imported by BYD Australia, bought by owners, and installed by an authorised BYD Service Centre are backed by a separate 12-month warranty from the date of purchase. For all complex diagnostic work or warranty claim assessments, owners must consult an authorised BYD dealer. Further detail on official warranty terms is available at https://bydautomotive.com.au/service-and-warranty.

Frequently Asked Questions

Are aftermarket parts covered by the official BYD warranty?

No, aftermarket parts are not covered by the vehicle manufacturer warranty. However, genuine spare parts imported by BYD Australia and installed by an authorised BYD Service Centre carry a 12-month warranty from the date of purchase.

Can I perform maintenance on the high-voltage electrical system myself?

No. Working on the high-voltage system, including the electric motors and Blade Battery, is exceptionally dangerous and must be performed exclusively by an authorised technician. The bright orange high-voltage cables must never be touched or opened by the owner.

Where do I find the correct engine oil specification for the petrol engine?

The fuel grade and engine oil specification are not stated in the official vehicle brochure. Refer to the official owner’s manual to verify the precise fluid requirements and capacities for your variant.

Will installing aftermarket tyres void my new vehicle warranty?

Tyres are entirely excluded from the BYD vehicle warranty. Fitting aftermarket tyres of the correct 235/50 R19 size should not affect the vehicle warranty, provided the new tyres meet all legal safety requirements and the load and speed ratings listed on the tyre placard. Always confirm with BYD Automotive Australia if in doubt.

Who should I contact regarding towing capacity limits?

As the towing capacity is not stated in the official model brochure, you must confirm with BYD Automotive Australia or consult an authorised BYD dealer to obtain the exact certified towing specifications applicable to your variant before fitting any towing equipment.

Is the PM2.5 filtration system the same across all SEALION 6 variants?

The PM2.5 filtration system is standard on Dynamic and Premium variants but is not included on the Essential variant. For service interval details and compatible replacement components, refer to the official owner’s manual.

See Also

Sources

Disclaimer: This guide is for informational purposes only. Official specifications, recall details, and warranty terms are determined by BYD Automotive Australia (EVDirect). Always consult an authorized dealer or official owner’s manual.