Audi S8 Pressure Test Radiator Cap at your home or office.

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Pressure Test Radiator Cap Service

How much does a Pressure Test Radiator Cap cost?

On average, the cost for a Audi S8 Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2008 Audi S8V10-5.2LService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$139.99 - $158.75
2017 Audi S8V8-4.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2016 Audi S8V8-4.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$120.03 - $138.82
2018 Audi S8V8-4.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$104.99 - $112.48
2015 Audi S8V8-4.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$120.07 - $138.89
2007 Audi S8V10-5.2LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$120.03 - $138.82
2013 Audi S8V8-4.0L TurboService typePressure Test Radiator CapEstimate$99.99Shop/Dealer Price$124.69 - $143.22
2003 Audi S8V8-4.2LService typePressure Test Radiator CapEstimate$99.99Shop/Dealer Price$125.63 - $144.85
Show example Audi S8 Pressure Test Radiator Cap prices

What is the radiator cap pressure test all about?

In a pressurized cooling system like those found on all cars, your car’s radiator cap is calibrated to seal in coolant to a particular pressure point, then allow some vapor to escape once that threshold has been reached. The ejected fluid is piped into the overflow bottle you might have seen in the engine bay. Then, as the engine cools, the coolant level may drop inside radiator. When that happens, a reverse-flow valve in the radiator cap opens to allow fluid from the bottle to return to the radiator. A radiator cap that isn’t working properly may cause too much fluid to escape the system.

Keep in mind:

  • A radiator cap pressure test is quick and simple, and replacement radiator caps are inexpensive.
  • Leaving a defective radiator cap in place can cause damage to the engine.

How it's done:

  • The vehicle engine is cooled before the radiator cap can be removed
  • The radiator pressure is relieved and the cap is removed
  • The radiator cap is pressure tested to specifications
  • The radiator cap is replaced and/or reinstalled to the radiator
  • The vehicle is verified to confirm problem is fixed

Our recommendation:

If your car’s engine overheats, or the overflow bottle seems overly full, have the radiator (and radiator cap) pressure tested.

What are the common symptoms indicating you need to pressure test the radiator cap?

  • Car overheats
  • Car’s overflow bottle fills up

How important is this service?

Not having this safety valve on the car’s cooling system operate properly can over- or under-pressurize the system, leading to damage to hoses, the radiator, and even the car’s cylinder head.

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Rating Summary
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ALEX

23 years of experience
43 reviews
ALEX
23 years of experience
Audi S8 V8-4.0L Turbo - Brake Pads Replacement (Front, Rear) - San Jose, California
Outstanding mechanic, which turned out to more complicated than we both expected. He was the ultimate professional working through the problem and keeping me updated. It also turned out I had the wrong part (online company) had shipped incorrectly and he helped me resolve and worked to the new schedule.

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Audi S8 V8-4.2L - Brake Pads Replacement (Front, Rear) - Newark, California
Knowledgable, Chill to be around, looked out for me on the back brakes. Definitely recommend.

Theodore

16 years of experience
1601 reviews
Theodore
16 years of experience
Audi S8 V8-4.2L - Pre-purchase Car Inspection - Bellevue, Washington
Theodore was very methodical and complete, Very professional. I highly recommend his services.

Kenneth

20 years of experience
781 reviews
Kenneth
20 years of experience
Audi S8 V10-5.2L - Coolant is leaking - Inglewood, California
Great and knowledgeable about cars

Excellent Rating

(13)

Rating Summary
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Number of Audi S8 services completed
143+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform

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