Radiator & Components for 2025 Audi S4
No.
Part # / Description / Price
Price
1
Radiator 
Audi
Audi Description: S5. S4. A8 Quattro. S6. RS5. Main. S7 sportback.
Radiator.
Radiator.
MSRP $593.33
$448.56
MSRP $593.33
$448.56
3
MSRP $18.45
$12.51
5
MSRP $16.40
$11.11
5
MSRP $24.78
$16.79
13
Engine Coolant Reservoir Audi
Audi Description: To 06/15/20. S4. From 06/15/20. S5. RS5. Main.
A container that holds engine coolant.
A container that holds engine coolant.
MSRP $213.32
$162.56
MSRP $213.32
$162.56
14
Engine Coolant Reservoir Bracket Audi
Audi Description: 2.9L, main.
bracket used to secure the expansion tank to its mounting point.
bracket used to secure the expansion tank to its mounting point.
MSRP $61.65
$49.34
MSRP $61.65
$49.34
17
MSRP $59.98
$43.19
18
Radiator Support Air Duct Audi
Audi Positions: Right
Description: 3.0L.
Routes air through the radiator support.
Routes air through the radiator support.
MSRP $73.33
$58.70
MSRP $73.33
$58.70
19
Radiator Support Air Duct Audi
Audi Positions: Left
Description: 3.0L.
Routes air through the radiator support.
Routes air through the radiator support.
MSRP $73.33
$58.70
MSRP $73.33
$58.70
19
Radiator Support Air Duct Audi
Audi Positions: Left
Description: 2020-21 45 tsfi. 3.0L. 2021.
Routes air through the radiator support.
Routes air through the radiator support.
MSRP $33.58
$22.75
MSRP $33.58
$22.75
19
Radiator Support Air Duct Audi
Audi Positions: Right
Description: 2020-21 40 tsfi. 3.0L. 2021.
Routes air through the radiator support.
Routes air through the radiator support.
MSRP $33.58
$22.75
MSRP $33.58
$22.75
20
Duct Audi
Audi Description: 45 tsfi. 2021-25. 2017-20. 2017-2019, manual trans. Convertible, upper. Coupe, 2.0 or 3.0L, upper. 2017-2019, auto trans. 2.9L, upper.
MSRP $33.58
$22.75
MSRP $33.58
$22.75
21
Duct Audi
Audi Description: 40 tsfi. 2021-25. 2017-20. 2017-2019, manual trans. Convertible, lower. Coupe, 2.0 or 3.0L, lower. 2017-2019, auto trans. 45 tsfi. 2.9L, lower, rear.
MSRP $56.67
$45.36
MSRP $56.67
$45.36
Related Parts
Part # / Description / Price
Price
Radiator Cap Audi
Audi Positions: Left
Description: 4.0L, primary. Convertible, 3.0L, main. Gas, primary, 2013-14. 2.0L. Diesel. 3.0L, with plug-in hybrid.
MSRP $34.38
$23.29
MSRP $34.38
$23.29