Audi S4 Radiators & Hoses
We stock Genuine OEM Audi® Radiators & Hoses for your Audi S4. A new OEM radiator can efficiently transfer heat away from the engine, preventing overheating and damage, ensuring smooth and reliable vehicle performance. OEM radiators are specifically designed to fit your vehicle's make and model, optimizing cooling efficiency and improving fuel economy. Investing in an OEM radiator guarantees superior quality, durability, and compatibility with your vehicle. Manufacturer's Warranty Included. Guaranteed Fit. Experts standing by.
2004-2009 Audi - Radiator
Audi
8E0-121-251-AJ
Primary.
Fits RS4, S4
4.2 Liter, Main, A4/S4, Auto Trans. 4.2 Liter, Main, Auto Trans. Cabriolet S4 Main Radiator Auto Trans. S4, RS4...
$421.76
MSRP $605.98
Save $184.22
30.4% Off 
Radiator
Audi
8W0-121-251-H
S5. Primary. S4. S6. Engine Cooling. S7 Sportback. RS5. A8 Quattro. Main.
$412.96
MSRP $593.33
Save $180.37
30.4% Off 
Radiator Cap
Audi
1J0-121-321-B
Location-Reservoir. Gas, main. Diesel, main. From Chassis/VIN 8D-T-308 001. From Chassis/VIN 8D-T-309 403.
$24.54
MSRP $39.59
Save $15.05
38% Off 
2018-2024 Audi - Auxiliary Radiator
Audi
8W0-121-218
S5. S4. Convertible, 3.0L, auxiliary.
$164.02
MSRP $231.67
Save $67.65
29.2% Off 
2010-2018 Audi - Auxiliary Radiator
Audi
8K0-121-212-B
Supercharger Cooling. Location-Wheel Arch. A7. Left radiator. A8. 3.0L, auxiliary. Without RS7, auxiliary. 3.0L, cooler & components,...
$271.40
MSRP $383.34
Save $111.94
29.2% Off 
2017-2025 Audi - Auxiliary Radiator Isolator
Audi
4M0-121-268-A
$15.36
MSRP $24.78
Save $9.42
38% Off 
2007-2013 Audi - Auxiliary Radiator
Audi
8E0-121-212-H
S4, RS4. Additional radiator. All. TT. Right. 4.2L, auxiliary, RS4.
$450.08
MSRP $646.67
Save $196.59
30.4% Off 
1984-2003 Audi - Reservoir Cap
Audi
443-121-321
5 cylinder, cap. Location-Reservoir. 4.2L, 2000-03. 4 cylinder. 6 cylinder 2.8L. 3.7L. 4.2L, 1997-99. To Chassis/VIN 8D-T-308 000. To...
$56.99
MSRP $79.15
Save $22.16
28% Off 
2010-2015 Audi - Auxiliary Radiator
Audi
8K0-145-804-H
2012-15 3.0 Liter Gas. 3.0 Liter 2010-2012 Cooler & Components. From 10/01/2013. Supercharger Cooling. To 10/01/2013.
Fits A6, A7, A7...
$313.88
MSRP $443.33
Save $129.45
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