My Garage
Search Without Vehicle
Search DIY Blog
Search DIY Blog
Search Without Vehicle
Recent
Suggested Categories
Search Using the Following Methods and Terms
Keywords
oil, brake pads, or rotors
Part Number or SKU
STPHME5W305Q, or EST-23432
Category & Keyword
Engine oil kit
Brand
Bosch, Borg Warner, or BMW
(877) 481-0208
Talk to an expert!
DIY Blog
Help Me
Track an order
Begin a return
Shipping policy
Wholesale
Contact our Service Team
FAQ
Careers
High Contrast Mode
My Account
Free Shipping
Over $49
Hassle-Free
Returns
Lifetime
Replacement
BMW
Parts
Volvo
Parts
VW
Parts
Audi
Parts
Shop Audi
Audi
AC and Climate Control
Audi
Air Intake
Audi
Brake
Audi
Car Care and Detailing
Audi
Clutch and Flywheel
Audi
Cooling System
Audi
Drivetrain and Axle
Audi
Engine
Audi
Exhaust
Audi
Exterior Body
Audi
Fuel System
Audi
Interior Body
Audi
Merchandise and Accessories
Audi
Steering
Audi
Supplies and Hardware
Audi
Suspension
Audi
Tools
Audi
Transmission
Mercedes
Parts
Porsche
Parts
Select your vehicle
Year
2027
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
Make
Model
Sub
model
Body
Engine
Transmission
Category
AC and Climate Control
Air Intake
Brake
Car Care and Detailing
Clutch and Flywheel
Cooling System
Coolant Expansion Tank
Expansion Tank
Expansion Tank Cap
Coolant Temperature Sensor
Cooling Fan
Cooling Hoses
Engine Coolant
Engine Coolant Pipe
Radiator
Thermostat
Water Pump
Drivetrain and Axle
Engine
Exhaust
Exterior Body
Fuel System
Interior Body
Merchandise and Accessories
Steering
Supplies and Hardware
Suspension
Tools
Transmission
Home
Audi
Expansion Tank
Audi RS6 Expansion Tank Parts
Showing 2 of 2 results
▾
Filter by
Filter by Quality
All
Genuine
OEM
Filter by Brand
All
Genuine VW Audi
Mahle Behr
Show Only
Kits
Parts
Available
In-stock
On sale
Clearance
Special kit pricing
Clear Filters
▾
Sort by
Avg. Customer Review
Price: Low to High
Price: High to Low
Newest
Most Popular
Clear Sort
OEM
Audi VW Expansion Tank - Mahle Behr 8D0121403L
A4, A4 Quattro, A6, A6 Quattro, Passat, RS6
13 Ratings
Available
Ships in 2 business days
$33.09
QTY
Add to cart
Audi VW Expansion Tank - Genuine Audi VW 8D0121403L
A4, A4 Quattro, A6, A6 Quattro, Passat, RS6
1 Rating
Available
In Stock
Ships Free
$87.76
QTY
Add to cart
Get help answering any questions you have
Contact Us
Customer Service
Contact Us
Order Status & Tracking
Returns
Lifetime Replacement Guarantee
Shipping Policy
Deals & Coupons
FAQ
About FCP Euro
About Us
Privacy Policy
DIY Blog
Motorsports Program
OE Academy
We're Hiring!
Terms of Service
Accessibility Statement
Consumer Privacy Rights
Do Not Sell or Share My Personal Information
Special offers, news, & promos
Sign Up
4.7/5
© FCP Euro 2026. All rights reserved.
Version: a10eeda60 : 53a503b7d08d6a1584b68d28b71f3ec1f789121f
