BMW 435i Gran Coupe 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 BMW 435i Gran Coupe Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2016 BMW 435i Gran CoupeL6-3.0L TurboService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2015 BMW 435i Gran CoupeL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
Show example BMW 435i Gran Coupe 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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6,273
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Jason

32 years of experience
530 reviews
Jason
32 years of experience
BMW 435i Gran Coupe L6-3.0L Turbo - Oil Change - San Jose, California
Jason is the best mechanic I have ever worked with. He is very personable. I offered him pancakes but he declined. I hope he knows he is really appreciated and I will contact him in the future to do more work. I texted him on his cell but he didn’t answer. Which is good Because he was driving to see me I guess and now I know he doesn’t text and drive. People don’t realize how important it is to focus on the task at hand aka driving and not get distracted. Thanks, You’re my mechanic now Jason. Good luck

Walter

46 years of experience
351 reviews
Walter
46 years of experience
BMW Z3 L4-1.9L - Cooling System Flush - Bixby, Oklahoma
Very detailed and methodical approach to repairing and troubleshooting.. We will use Walter in the future...

Kris

12 years of experience
55 reviews
Kris
12 years of experience
BMW 320i L4-2.0L Turbo - Car is not starting - Atlanta, Georgia
Nice guy, knew exactly what I needed, and got it done quickly. Highly recommend.

Tinashe

13 years of experience
627 reviews
Tinashe
13 years of experience
BMW 328i L6-3.0L - Oil Change - Atlanta, Georgia
He arrived early and was very professional. Will definitely book him again

Excellent Rating

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Rating Summary
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6,273
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145
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