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Radiator & Components for 2021 Audi S4

No.
Part # / Description / Price
1
Radiator
MSRP $593.33
Audi Audi

S5. Primary. S4. S6. Engine Cooling. S7 Sportback. RS5. A8 Quattro. Main.

2
Radiator Upper Insulator
MSRP $9.23
Audi Audi

Radiator Upper Insulator, Left

3
Radiator Sleeve
MSRP $18.45
Audi Audi

Radiator Sleeve, Left

4
Auxiliary Radiator Upper Bolt
MSRP $6.15
Audi Audi

Radiator Upper Bolt, Right

5
Radiator Lower Insulator
MSRP $16.40
Audi Audi

Radiator Lower Insulator, Right

6
Radiator Insulator
MSRP $24.78
Audi Audi

Lower Mount, Left

7
Radiator Mount Bolt
MSRP $5.13
Audi Audi

Lower Mount Lower Bolt, Left

13
Engine Coolant Reservoir
MSRP $213.32
Audi Audi

Reservoir

S5. S4. RS5. 2.9L main. Convertible, 3.0L, main.

14
Bracket
MSRP $61.65
Audi Audi

Reservoir Mount Bracket

Convertible, 3.0L, main. Bracket. 2.9L main.

15
Window Regulator Nut
MSRP $3.55
Audi Audi

Reservoir Nut

17
Cap
MSRP $59.98
Audi Audi

Reservoir Cap

18
Radiator Support Air Duct
MSRP $73.33
Audi Audi

Outer Duct, Right

3.0L.

19
Radiator Support Air Duct
MSRP $33.58
Audi Audi

Inner Duct, Left

2.0L 2020-24 40 tsfi. 3.0L. 2021-25. 2.0L 2020-25 45 tsfi.

19
Radiator Support Air Duct
MSRP $33.58
Audi Audi

Inner Duct, Right

2.0L 2020-24 40 tsfi. 3.0L. 2021-25. 2.0L 2020-25 45 tsfi.

19
Radiator Support Air Duct
MSRP $73.33
Audi Audi

Outer Duct, Left

3.0L.

20
Radiator Support Air Duct
MSRP $33.58
Audi Audi

Upper Duct

2017-2019, auto trans. 2.0L 2020-24 40 tsfi. 2021-25. 2017-20. Convertible, upper. Coupe, 2.0 or 3.0L, upper. 2.0L 2020-25 45 tsfi. 2.9L. upper.

21
Radiator Support Air Duct
MSRP $56.67
Audi Audi

Lower Duct

2.0L 2017-2019 auto trans. 2.0L 2020-24 40 tsfi. 2021-25. 2017-20. Convertible, lower. Coupe, 2.0 or 3.0L, lower. 2.0L 2020-25 45 tsfi. 2.9L. lower, rear.