MK8 GOLF R & S3 8Y Rear Differential (Sports-Diff) Transfer Box Oil / Fluid 850ml

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Review
Returns/Shipping

OE Sports Differential / Transfer Box Oil – 850ml

Part No: G055515A2 / G 055 515 A2

Maintain peak drivetrain performance with this genuine VAG OE Differential & Transfer Box Oil, specially formulated for vehicles equipped with a sports rear differential.

Engineered to meet the exacting standards of the Volkswagen Group, this high-quality fluid is designed to ensure smooth, reliable operation and long-term durability.

✔️ Key Features:

OEM specification for peace of mind
Compatible with most VAG models featuring sports differentials
Ideal for differential and transfer box applications
Supplied in a sealed 850ml container

Service Advice:

Although classified by VW as a “lifetime fill,” many performance-focused drivers and technicians recommend replacing this fluid every 30,000 miles, especially under spirited or demanding driving conditions.

Important Note:

Fluid quantity requirements may vary depending on your specific vehicle model. If you're unsure how much you need, please contact our team or consult your dealership before ordering.

Typical Service Fill Quantities:

Vehicle / System	Approx. Fill Capacity
Audi S3 / RS3 (with sports rear diff)	~0.85L (850ml)
VW Golf R (MK7/MK8 with VAQ diff)	~0.85L (850ml)
Audi S4 / S5 (Quattro Sports Diff)	~0.9L – 1.1L
Audi RS4 / RS5 / RS6 (with torque vectoring diff)	~1.1L – 1.3L
Tiguan 4Motion / Passat 4Motion	~0.85L

Most common fill is around 850ml, which is why the OEM bottle is that size.
Always check with official workshop manuals or electronic service portals (like ElsaPro) for exact quantities based on your VIN.

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Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Ecotune do not assume responsibility for the use of this part on public roads in the UK or abroad where emissions controls have been removed. It is the customer’s responsibility to ensure compliance with the rules and laws of the area of use. We would like to advise that it is illegal to remove any emission control devices or increase the exhaust noise limit on vehicles permitted to drive on public roads in the UK and most other countries around the world. Please check the rules and laws relating to this in your country. Any parts supplied or work carried out by Ecotune are strictly for off-road use and may fail an MOT test. This means that we cannot accept any responsibility for vehicles being driven on public roads where removal of emission control devices is prohibited. If you carry out this work at our premises, we would not be able to road test afterwards..