Expansion & Overflow Tanks · Item 1000631772
Free delivery
Delivery to mainland UK
Only 1 available — the exact part in the photos
Used part. Listed under Expansion & Overflow Tanks, part number 4G0121403R. £16.96 with free delivery. 1 in stock, with 30-day returns or replacement.
Manufacturer part number
4G0121403R
The photos show the exact part you will receive. Questions?
Seller's notes on condition
Item is in a good used condition.
Mon-Fri: 8:30am-4:30pm | Sat-Sun: Closed
Audi A6 15-18 2.0 Diesel CNHA Expansion Header Overflow Bottle
Manufacturer Part Number: 4G0121403R
Item 1000631772 · listed 18 Oct 2026 · payment terms and vehicle identifiers are removed from the seller's text.
Prices and dates below are for mainland UK. Enter your postcode for yours.
Delivery dates are estimates.
Used.
The part number is 4G0121403R.
Parts with the same part number were also taken from the Audi A6 Avant (4G, C7 facelift 2014) and Audi A6 Sedan (4G, C7 facelift 2014). Check the part number on your own car before you buy.
Delivery is free.
Yes. Ask for a refund or a replacement within 30 days of delivery, from your orders.
