Are the parts original (OEM)?

Yes. All AutoRiven parts are used original OEM parts. We do not sell aftermarket parts or replicas.

How can I check if a part is compatible with my vehicle?

Compatibility should be verified using the OEM reference number. You can also contact us before purchasing with your VIN, make, model, engine, and year, and our team will assist you.

Are the parts new or used?

AutoRiven sells used OEM automotive parts only.

Are parts tested before sale?

Product information is based on visual inspection, available technical data, photos, and supplier information at the time of listing. Due to the nature of used automotive parts, not all components can be fully functionally tested before shipment.

Do used parts include a warranty?

Yes. All parts include a 30-day commercial warranty from the date of delivery, covering functional defects only. This commercial warranty does not affect or replace the consumer’s statutory rights under EU conformity law.

How long does shipping take?

Estimated delivery time is 2–10 business days depending on destination. Express shipping may be available on request and typically takes 24–72 hours.

Which payment methods do you accept?

We accept secure payments via Stripe Checkout, including credit and debit cards, PayPal, Apple Pay, Google Pay, Klarna, Revolut Pay, and other local methods depending on your country.

Can I return a part if it doesn’t fit?

Returns are accepted only if the item is defective or damaged, an incorrect item was supplied, or the product does not match the description. Used automotive parts are vehicle-specific and individually identified items and are excluded from the 14-day right of withdrawal under EU Directive 2011/83/EU.

Do electronic parts require programming?

Some electronic components may require coding or programming by a qualified technician after installation.

Do you ship internationally?

Yes, we ship internationally. Any customs duties, import taxes, or local charges required by the destination country are the customer’s responsibility.

Audi OE 8E0121403C expansion tank OEM 8E0121403C

Description

Audi OE 8E0121403C expansion tank Brand: Audi Condition: Used OEM reference: 8E0121403C Category: Expansion Tanks To avoid compatibility issues, we recommend comparing this OEM number against your vehicle's original part before you buy. Shipping is available to destinations worldwide. Listed price covers 1 piece. For multiple units, please reach out first to check availability and pricing.

Specifications

Condition
Used
Invoice
VAT Invoice Issued

Payment and Shipping

Get your used OEM auto parts delivered fast and pay with total security.

Fast worldwide shipping on used car parts (2–7 days EU / 5–12 days international)
Direct dispatch from supplier = faster delivery and optimized logistics
Full tracking on every order for complete transparency
100% secure payments via Stripe (credit cards, PayPal, Apple Pay, Klarna & local methods)
Payment is captured only after order confirmation

Before ordering:

Shipping cost is calculated at checkout based on location and parcel size
Customs duties may apply for non-EU deliveries
Always check compatibility with your vehicle and OEM reference

More details:

Return & Warranty

Transparent conditions for used OEM car parts, designed to protect both buyer and product integrity.

30-day warranty covering functional defects on used auto parts
Returns accepted only if the item is incorrect, defective, or not as described
Refund or replacement issued after inspection and verification

Please keep in mind:

All parts are used, vehicle-specific, and individually listed
Normal cosmetic wear does not affect functionality and is not considered a defect
Returns for incorrect orders or change of mind are not accepted

For full coverage and legal details, see Returns Policy and Terms and Conditions.

Related Parts 8E0121403C

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Audi A4 B7 Coolant Expansion Tank OEM 8E0121403C

52.00€

(Incl. VAT)

VAT (23%):12.48€

Delivery:4.24€