Infiniti FX45 Brake Master Cylinder Replacement Costs

Estimate price near me

Service Location

Customer Ratings

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

See availability

Customer Ratings

Brake Master Cylinder Replacement Service

How much does a Brake Master Cylinder Replacement cost?

On average, the cost for a Infiniti FX45 Brake Master Cylinder Replacement is $373 with $191 for parts and $182 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2003 Infiniti FX45V8-4.5L	Service typeBrake Master Cylinder Replacement	Estimate$584.12	Shop/Dealer Price$687.97 - $981.07
2006 Infiniti FX45V8-4.5L	Service typeBrake Master Cylinder Replacement	Estimate$572.41	Shop/Dealer Price$672.23 - $962.33
2005 Infiniti FX45V8-4.5L	Service typeBrake Master Cylinder Replacement	Estimate$572.41	Shop/Dealer Price$672.29 - $962.43
2008 Infiniti FX45V8-4.5L	Service typeBrake Master Cylinder Replacement	Estimate$584.81	Shop/Dealer Price$687.79 - $987.22
2004 Infiniti FX45V8-4.5L	Service typeBrake Master Cylinder Replacement	Estimate$572.41	Shop/Dealer Price$675.64 - $968.29
2007 Infiniti FX45V8-4.5L	Service typeBrake Master Cylinder Replacement	Estimate$584.81	Shop/Dealer Price$688.11 - $987.78

Show example Infiniti FX45 Brake Master Cylinder Replacement prices

What is the brake master cylinder and how does it work?

The brake master cylinder has a piston that pressurizes fluid in the brake lines to each wheel cylinder as you apply force to the brake pedal. That pressure moves the pistons that are in the wheel cylinders. As the pistons in those wheel cylinders move, they force the brake pads or shoes tightly against the rotors or drums allowing the car to stop quickly.

The size of the pistons in the master cylinder and in the wheel cylinders are carefully selected when designing a car. This allows drivers to apply moderate pressure on the brake pedal when stopping, but creates tremendous pressure applied at the wheel cylinders. A car can then stop quickly even at high speeds. Depending on how much force is applied to the brake pedal, the pressure in a car’s brake lines will typically be in the range of 800 PSI to 2,000 PSI.

Master Cylinder

When to replace the master cylinder?

External fluid leaks. There should be no fluid visible on the external surfaces of any portion of the master cylinder or the plastic fluid reservoir.
Low, slowly falling, or spongy brake pedal. Faulty internal seals on the piston can cause internal leaks and also seepage of brake fluid into the power assist brake booster. Internal leaks will typically be accompanied by a low pedal, a spongy brake pedal, or a pedal that slowly sinks as you maintain pressure. In all cases, you will experience reduced braking abilities.
Discolored brake fluid. No brake fluids, other than those specified for the year, make, and model, are fully compatible with a car’s internal rubber seals in the master cylinder. Discoloration of brake fluid can also occur due to moisture and particulate contaminants in the fluid.
Warning lights on the dash. If the brake system warning light illuminates, there are several potential causes but failure of the master cylinder is in the list of causes that would have to be investigated.

How do mechanics replace the brake master cylinder?

On vehicles with power brakes, the master cylinder is bolted to the metal housing of the power brake booster. There is usually an electrical plug connecting to a brake fluid level sensor on the master cylinder reservoir and that plug must be disconnected.
Once all steel brake lines are disconnected from the master cylinder, the master cylinder is unbolted from the brake booster and removed from the vehicle.
The new master cylinder must be bench-bled to expel air from internal passages that contain the piston. Then the new master cylinder is bolted to the brake booster and the brake lines are reattached. The electrical plug for the fluid level sensor is reconnected.
Whenever a new master cylinder is installed, brakes lines to wheel positions must be bled to remove air, old fluid and contaminants. If your vehicle is equipped with anti-lock brakes, the mechanic may use a bidirectional scan tool during brake bleeding to actuate the ABS pump, thus ensuring that all air is removed from the complex valving in the ABS system.
All brake line connections that were removed during the master cylinder replacement are inspected for any leakage and the vehicle is road tested to ensure normal operation of the brakes.

Is it safe to drive with a master cylinder problem?

No, any fault in the master cylinder, which is part of the braking system creates a safety risk. A fully operational brake system is essential to quickly stopping your car. Driving a vehicle isn’t safe, if the master cylinder is leaking or has other faults, as braking distances might be longer than normal. The braking system on a vehicle is among the most important safety systems and must be fully functional to safely drive your vehicle.

When replacing the master cylinder keep in mind:

The master cylinder is only one component of many in a vehicle’s braking system. During replacement of the master cylinder, all vehicle braking system components should be inspected to ensure maximum braking power is available.
The amount of friction material remaining on the brake pads and brake shoes should be verified.
Brake lines and flexible rubber hoses at each wheel position should be inspected for corrosion and deterioration.
The power brake booster should be evaluated to ensure that power assist is working properly.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee

Meet some of our expert Infiniti mechanics

Real customer reviews from Infiniti owners like you.

Excellent Rating

(32)

Rating Summary

31

1

0

0

0

31

1

0

0

0

SEE REVIEWS NEAR ME

Edgar

26 years of experience

41 reviews

Edgar

26 years of experience

by David

Infiniti FX45 V8-4.5L - 60,000 Miles Maintenance Service - Palo Alto, California

Edgar came to my home to perform a 60k mile service on my Infiniti FX45. He gave me a call to let me know he was on his way and arrived promptly. He was very friendly in his demeanor and professional in communicating what checks he was doing and reporting on the condition of the car. He brought all the equipment he needed in his mobile shop and completed the service in the estimated time. I highly recommend Edgar if you have any mechanic needs!

Patrick

34 years of experience

1579 reviews

Request Patrick

Patrick

34 years of experience

Request Patrick

by Arnold

Infiniti FX45 V8-4.5L - Steering Rack/Gearbox - Austin, Texas

Quick, prompt service

Alfred

14 years of experience

587 reviews

Alfred

14 years of experience

by Joey

Infiniti FX45 V8-4.5L - Car is not starting - San Francisco, California

Alfred was great and knowledgeable. Your Mechanic is super convenient.

Peter

44 years of experience

1397 reviews

Peter

44 years of experience

by Michael

Infiniti FX45 V8-4.5L - AC High Pressure Hose - Sun City, Arizona

Great mechanic and a better person.

Excellent Rating

(32)

Rating Summary

31

1

0

0

0

31

1

0

0

0

SEE REVIEWS NEAR ME

Recent articles & questions

How to Find Your First Car

Finding the perfect first car is important for a new driver. You want one that fits your personality but also falls within a budget you can afford. Read on for some crucial steps in your search (https://www.yourmechanic.com/article/how-to-buy-a-used-car) for your first...

Symptoms of a Bad or Failing Vacuum Booster

Common signs include a stiff brake pedal, intermittent power to the brakes, and a brake pedal that sinks all the way to the floor when applied.

How to Renew Your Car Registration in Delaware

Being Being able to drive on the Delaware roadways is a privilege that citizens have. In order to pay for the upkeep on these roads, you will have to pay to have your car registered with the Delaware DMV. Each...

How do I adjust the rearview mirror?

Having a clear, unobstructed view out the back window of your car is vital. You need to see behind you while you’re on the road, when you’re backing out of a parking space and more. Whether you have a manual...

Mobil 1 no longer meets BMW LL-01 spec. Do you have Castrol Edge 0W-40 Euro Formula available?

Any oil that you desire can be used in an oil change and the customer can, of course, supply the oil himself or herself. I see Castrol Edge OW-40 European formula vended at Amazon, and elsewhere, and thus you can...

hello my engine light was on so i had the evap replaced and a piece on my radiator last week the light went off now its back on

The check engine light (https://www.yourmechanic.com/advice/tag/check-engine-light) can come on for a vast number of reasons. Modern vehicles are typically equipped with dozens of sensors throughout the engine, transmission, and braking system.The engine control unit relies on all of these inputs to...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com