OEM Audi Radiators

Refine Results

What Radiators Do

They're heatsinks. In other words, they help keep the engine in your Audi from overheating.

How a Radiator Works

In short, it uses coolant (antifreeze) to absorb the excess heat generated as your engine runs. Plus, it helps scatter the heat. The process is simple.

First, antifreeze flows through radiator hoses – inlet and outlet hoses, to be exact. The fluid gets pressurized by a radiator cap along the way. As it travels, it captures as much heat as it can. Then, flat, fin-style aluminum tubes expel the heat, with help from a fan to dispel it.

Some radiators have extra fins, called turbulators. They dissipate heat even better. Others have side-mounted tanks, called transmission coolers. They transfer the heat of transmission operation to the coolant.

Signs of Radiator Problems

Unfortunately, a radiator can go bad and even fail, but luckily, there are symptoms that'll tell you that's happening. They include:

  • Strange engine noises
  • A temperature gauge that reads unusually high
  • The sweet, syrupy odor of ethylene glycol (indicating a coolant leak)
  • Dirty or sludgy antifreeze
  • Coolant leaks
  • Heater and air conditioning malfunctions

To figure out what could be causing these problems, perform a thorough inspection.

Repair Your Audi Cooling System with Peace of Mind | Use a Genuine OEM Radiator

Whether you're looking to order a new radiator or just a few replacement cooling system parts, you've come to the right auto parts store. Our catalog has a vast selection, and everything's genuine, designed by Audi to work with the car or SUV model you drive, guaranteed. You can even order online. Buy now, and we'll ship fast, with delivery directly to your door.

Radiator Cap
MSRP $25.80
$16.62
Part Number: 4D0-133-335
Positions: Left Lower, Right Lower
Other Names: Lower Mount Cap, Radiator Coupling, Cap, Auxiliary Radiator Cap More Names
Description: Gas, primary, 2013-14. Diesel. 2.0L plug-in hybrid. 4.0L, primary. 3.0L with plug-in hybrid. 3.0L main. More Info
Fits:
  • Audi:
    • A6 allroad,
    • A6 Quattro,
    • A7 Quattro,
    • A8 Quattro,
    • Q5 PHEV,
    • Q7,
    • Q8,
    • RS5 Sportback,
    • S4,
    • S5,
    • S5 Sportback,
    • S6,
    • S7,
    • S8,
    • SQ5,
    • SQ7,
    • SQ8
  • 12 more
Radiator Cap
MSRP $130.00
$93.44
Part Number: 4S7-121-321
Other Names: Cover More Names
Description: Location-Reservoir. More Info
Fits:
  • Audi:
    • R8
Radiator Cap
MSRP $32.40
$20.87
Part Number: 1J0-121-321-B
Other Names: Reservoir Cap, Cover More Names
Description: Location-Reservoir. Gas, main. Diesel, main. From Chassis/VIN 8D-T-308 001. From Chassis/VIN 8D-T-309 403. More Info
Fits:
  • Audi:
    • A4,
    • A4 Quattro,
    • A6,
    • A6 Quattro,
    • Allroad Quattro,
    • Q7,
    • RS6,
    • S4,
    • S6,
    • TT,
    • TT Quattro
  • 6 more
Radiator Hose
MSRP $27.60
$17.77
Part Number: 7L6-121-058-F
Positions: Right
Other Names: Radiator Coolant Hose, Hose More Names
Description: Diesel, auxiliary. Auxiliary Radiator. 3.0L, auxiliary. More Info
Fits:
  • Audi:
    • Q7
Radiator Hose
MSRP $155.00
$111.41
Part Number: 8R0-121-444-E
Other Names: Hose More Names
Description: 2.0L, hybrid, auxiliary. More Info
Fits:
  • Audi:
    • Q5
Radiator Hose
MSRP $39.60
$25.50
Part Number: 7L6-121-096-A
Positions: Left
Other Names: Radiator Coolant Hose, Hose More Names
Description: Diesel, auxiliary. Auxiliary Radiator. 3.0L, auxiliary. More Info
Fits:
  • Audi:
    • Q7
Radiator Hose Clamp
MSRP $1.62
$1.04
Part Number: N-906-869-01
Positions: Lower, Upper
Other Names: Lower Hose Clamp, Vent Hose Clamp, Clip More Names
Description: 1.8L. Auxiliary Radiator. At Radiator. Supercharger Cooling Radiator. Lower Radiator Coolant Hose. Location-Wheel Arch. At Pipe. 4.0L,... More Info
Fits:
  • Audi:
    • A4 Quattro,
    • A6 Quattro,
    • Q7,
    • S5,
    • S6,
    • SQ7,
    • TT Quattro
  • 2 more
Radiator Coolant Hose
MSRP $16.00
$10.30
Part Number: 8W0-145-922-G
Positions: Lower
Other Names: Radiator Hose, Hose More Names
Description: Supercharger Cooling. Center. 2.9L, main, lower. More Info
Fits:
  • Audi:
    • RS5,
    • RS5 Sportback
Radiator Coolant Hose
MSRP $28.00
$18.03
Part Number: 8W0-145-923-P
Positions: Upper
Other Names: Radiator Hose, Hose More Names
Description: Supercharger Cooling. Center. 2.9L, main, upper. More Info
Fits:
  • Audi:
    • RS5,
    • RS5 Sportback
Radiator
MSRP $268.33
$189.66
Part Number: 1J0-121-253-S
Description: TT. 3.2l. Large. More Info
Fits:
  • Audi:
    • TT Quattro
Radiator
MSRP $416.67
$294.50
Part Number: 4S0-121-212-B
Positions: Rear Right
Fits:
  • Audi:
    • R8
Radiator
MSRP $618.33
$429.62
Part Number: 4S0-121-252-B
Positions: Front Left, Front Right
Fits:
  • Audi:
    • R8
Radiator
MSRP $238.33
$168.45
Part Number: 5Q0-121-251-ES
Replaces: 5Q0-121-251-EQ
Description: Primary. More Info
Fits:
  • Audi:
    • A3,
    • A3 Sportback e-tron
Radiator
MSRP $398.33
$281.54
Part Number: 7L6-121-253-K
Description: Q7. 4.2l. 4.2L, with towing pkg. More Info
Fits:
  • Audi:
    • Q7
Radiator
MSRP $225.00
$159.03
Part Number: 8D0-121-251-BB
Replaces: 8D0-121-251-L
Description: A4. 2.8L v6, auto trans. A6/S6. 2.8l. Without Quattro. More Info
Fits:
  • Audi:
    • A4,
    • A4 Quattro,
    • A6,
    • A6 Quattro
Radiator
MSRP $765.00
$531.52
Part Number: 8E0-121-251-AM
Description: Primary. 4.2L, main, RS4. More Info
Fits:
  • Audi:
    • RS4
Radiator
MSRP $355.00
$250.91
Part Number: 8K0-121-251-L
Description: A5. A4. Q3. 2.0L, manual trans. More Info
Fits:
  • Audi:
    • A4,
    • A4 Quattro,
    • A5,
    • A5 Quattro,
    • A6,
    • A6 Quattro,
    • Q3,
    • Q3 Quattro
  • 3 more
Radiator
MSRP $761.67
$529.21
Part Number: 420-121-254-B
Replaces: 420-121-254-A
Description: Center. R8. More Info
Fits:
  • Audi:
    • R8
Radiator
MSRP $443.33
$313.35
Part Number: 4E0-121-212-G
Description: S8. Additional. More Info
Fits:
  • Audi:
    • S8
Radiator
MSRP $440.00
$310.99
Part Number: 4F0-145-804-K
Positions: Front
Description: 3.0L, front. More Info
Fits:
  • Audi:
    • A6 Quattro
Radiator
MSRP $541.67
$376.35
Part Number: 4G0-121-251-N
Other Names: Radiator More Names
Description: Primary. Fits RS7, RS7 Sportback, S7 Sportback RS7. w/RS7, Main. RS7. More Info
Fits:
  • Audi:
    • RS7
Radiator
MSRP $541.67
$376.35
Part Number: 4H0-121-251-B
Other Names: Radiator More Names
Description: Primary. Fits A8 4.0 Liter, Primary, A8, A8L, A8L Sport. 4.2 Liter. 6.3 Liter, Primary. A8. A8. More Info
Fits:
  • Audi:
    • A8 Quattro
Radiator
MSRP $541.67
$376.35
Part Number: 4H0-121-251-E
Other Names: Radiator More Names
Description: Primary. Fits A8, S7 Sportback, S8 4.0 Liter, Primary, S8, S8 Plus. S8. S8. Primary. More Info
Fits:
  • Audi:
    • A8 Quattro,
    • S8
Radiator
MSRP $445.00
$314.53
Part Number: 8V0-121-251-B
Other Names: Auxiliary Radiator More Names
Description: 2.5 Liter Main. Primary. Fits RS3, TT RS 2.5 Liter, Main. RS3. TT. TT. RS3. More Info
Fits:
  • Audi:
    • RS3,
    • TT Quattro,
    • TT RS Quattro
Radiator
MSRP $441.67
$312.17
Part Number: 8W0-121-251-AA
Description: 2.0L plug-in hybrid. More Info
Fits:
  • Audi:
    • Q5 PHEV
Radiator
MSRP $356.67
$252.09
Part Number: 8W0-121-251-AK
Replaces: 8W0-121-251-L
Description: A4 allroad. A5. Q7. A6 Quattro. 2.0L, main. More Info
Fits:
  • Audi:
    • A4,
    • A4 allroad,
    • A4 Quattro,
    • A5 Quattro,
    • A5 Sportback,
    • A6 Quattro,
    • Q7
  • 2 more
Radiator
MSRP $483.33
$341.62
Part Number: 4S0-121-254-B
Positions: Front Center
Fits:
  • Audi:
    • R8
Radiator
MSRP $260.00
$183.77
Part Number: 5Q0-121-251-HG
Description: 1.4L, auxiliary, to 07/25/2016. More Info
Fits:
  • Audi:
    • A3 Sportback e-tron
Radiator
MSRP $1,190.00
$819.67
Part Number: 8E0-121-251-AB
Other Names: Radiator More Names
Replaces: 8E0-121-251-AC
Description: Primary. Fits S4 Radiator - Repair or Replace Typical symptoms for a failed radiator include both an overheating engine and a coolant... More Info
Fits:
  • Audi:
    • S4
Radiator
MSRP $456.67
$322.77
Part Number: 8E0-121-251-AJ
Other Names: Radiator More Names
Description: 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... More Info
Fits:
  • Audi:
    • RS4,
    • S4
Radiator
MSRP $798.33
$554.68
Part Number: 8J0-121-251-B
Description: 2.5L, main. TT. More Info
Fits:
  • Audi:
    • TT Quattro,
    • TT RS Quattro,
    • TTS Quattro
Radiator
MSRP $513.33
$356.66
Part Number: 8K0-121-251-AG
Description: A6. More Info
Fits:
  • Audi:
    • A6,
    • A6 Quattro
Radiator
MSRP $456.67
$322.77
Part Number: 8K0-121-251-AM
Replaces: 8K0-121-251-AB, 8K0-121-251-S
Description: Rs 5. S5. Auto trans. More Info
Fits:
  • Audi:
    • RS5,
    • S5
Radiator
MSRP $333.40
$235.65
Part Number: 4E0-121-251-C
Description: A8. More Info
Fits:
  • Audi:
    • A8 Quattro
Radiator
MSRP $456.67
$322.77
Part Number: 4E0-121-251-F
Replaces: 4E0-121-251-D
Description: A8. S8. Main. 4.2L, 2007-10. More Info
Fits:
  • Audi:
    • A8 Quattro,
    • S8
Radiator
MSRP $465.00
$328.66
Part Number: 4F0-121-251-AC
Replaces: 4F0-121-251-S
Description: S6. Primary. More Info
Fits:
  • Audi:
    • S6
Radiator
MSRP $646.67
$449.30
Part Number: 4M0-121-251-M
Description: 4.0L. S8. More Info
Fits:
  • Audi:
    • S8,
    • SQ7,
    • SQ8
Radiator
MSRP $628.33
$436.57
Part Number: 4E0-121-251-G
Fits:
  • Audi:
    • A8 Quattro
Radiator
MSRP $405.00
$286.25
Part Number: 4F0-121-251-AF
Other Names: Radiator More Names
Replaces: 4F0-121-251-AA, 4F0-121-251-M
Description: Engine Cooling. From Chassis/VIN 4F-8-146 001. To Chassis/VIN 4F-8-146 000. Fits A6 3.0 Liter, Rear. 3.2 Liter. A6. A6. More Info
Fits:
  • Audi:
    • A6,
    • A6 Quattro
Radiator
MSRP $365.00
$257.98
Part Number: 4S0-121-212-A
Positions: Rear Left
Fits:
  • Audi:
    • R8
Radiator
MSRP $293.33
$207.33
Part Number: 5Q0-121-251-GR
Description: A3. More Info
Fits:
  • Audi:
    • A3 Sportback e-tron
Radiator
MSRP $411.67
$290.97
Part Number: 7L6-121-253-E
Description: Q7. 3.6l. More Info
Fits:
  • Audi:
    • Q7
Radiator
MSRP $218.33
$154.32
Part Number: 8D0-121-251-BC
Replaces: 8D0-121-251-M
Description: A4. 6 cylinder, 2.8L, auto trans. More Info
Fits:
  • Audi:
    • A4,
    • A4 Quattro
Radiator
MSRP $266.67
$188.48
Part Number: 8E0-121-251-A
Description: Cabriolet A4. 2.0L, manual trans. More Info
Fits:
  • Audi:
    • A4,
    • A4 Quattro
Radiator
MSRP $456.67
$322.77
Part Number: 8E0-121-251-AH
Other Names: Radiator More Names
Description: Primary. Fits RS4, S4 4.2 Liter, Main, A4/S4, Manual Trans. 4.2 Liter, Main, Manual Trans. Cabriolet S4 Main Radiator Manual Trans.... More Info
Fits:
  • Audi:
    • RS4,
    • S4
Radiator
MSRP $466.67
$329.84
Part Number: 8K0-121-251-AJ
Other Names: Radiator More Names
Replaces: 8K0-121-251-K, 8K0-121-251-T
Description: Fits A4, A5, allroad, Q5 2.0 Liter. 2.0 Liter, Auto Trans. 2.0 Liter, Gas. 2.0 Liter, Hybrid, Main. 2.0 Liter, w/Auto Trans. 2013-2016.... More Info
Fits:
  • Audi:
    • A4,
    • A4 Quattro,
    • A5,
    • A5 Quattro,
    • allroad,
    • Q5
  • 1 more
Radiator
MSRP $466.67
$329.84
Part Number: 8K0-121-251-AL
Other Names: Radiator More Names
Replaces: 8K0-121-251-AA, 8K0-121-251-Q
Description: Engine Cooling. Fits A4, A5, Q5, S4, S5, SQ5 3.0 Liter Diesel. 3.0 Liter Gas. 3.0 Liter, Main. 3.0 Liter, w/Auto Trans. 3.2 Liter.... More Info
Fits:
  • Audi:
    • A4 Quattro,
    • A5 Quattro,
    • Q5,
    • S4,
    • S5,
    • SQ5
  • 1 more
Radiator
MSRP $576.67
$400.67
Part Number: 8K0-121-251-H
Description: A6. A7. S5. S4. A5. Without oil cooler. 3.0L, with manual trans. 3.2L, manual trans. A4. More Info
Fits:
  • Audi:
    • A4 Quattro,
    • A5 Quattro,
    • A6 Quattro,
    • A7 Quattro,
    • S4,
    • S5
  • 1 more

No results found for "radiator, radiator hose, radiator cap". Here are some helpful search tips:

  • Search by a part name. Example: water pump.
  • Be less specific. Example: brake instead of ceramic brake.
  • Remove information such as make, year or model.
  • Can't find the part you are looking for? Contact us and we'll find it for you!