Infiniti QX80 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 QX80 Brake Master Cylinder Replacement is $1638 with $1456 for parts and $182 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2015 Infiniti QX80V8-5.6L	Service typeBrake Master Cylinder Replacement	Estimate$7771.90	Shop/Dealer Price$9624.02 - $15140.67
2017 Infiniti QX80V8-5.6L	Service typeBrake Master Cylinder Replacement	Estimate$7552.29	Shop/Dealer Price$9343.31 - $14704.80
2018 Infiniti QX80V8-5.6L	Service typeBrake Master Cylinder Replacement	Estimate$7333.31	Shop/Dealer Price$9121.60 - $14481.06
2014 Infiniti QX80V8-5.6L	Service typeBrake Master Cylinder Replacement	Estimate$3321.39	Shop/Dealer Price$4058.65 - $6249.94
2016 Infiniti QX80V8-5.6L	Service typeBrake Master Cylinder Replacement	Estimate$7746.67	Shop/Dealer Price$9597.47 - $15113.14

Show example Infiniti QX80 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

(41)

Rating Summary

39

1

0

1

0

39

1

0

1

0

SEE REVIEWS NEAR ME

James

9 years of experience

128 reviews

James

9 years of experience

by Mike

Infiniti QX80 V8-5.6L - Brake Pads Replacement (Rear) - Fayetteville, Georgia

Very informative, knowledgeable.

Joel

12 years of experience

177 reviews

Joel

12 years of experience

by Zack

Infiniti QX80 V8-5.6L - Oil Change - Frisco, Texas

Early, knowledgeable, super nice!

Trey

23 years of experience

153 reviews

Trey

23 years of experience

by Tiana

Infiniti QX80 V8-5.6L - Car is not starting - Kernersville, North Carolina

Leo was very knowledgeable and made me feel confident in his diagnosis of my vehicle. He was thorough and made sure to test the necessary components to be sure that the final recommendations were correct.

Robert

21 years of experience

1307 reviews

Robert

21 years of experience

by Brian

Infiniti QX80 V8-5.6L - Oil Change - Golden, Colorado

Very good mechanic, super personable, and clearly and expert. Glad I was able to work with him. His work is top notch.

Excellent Rating

(41)

Rating Summary

39

1

0

1

0

39

1

0

1

0

SEE REVIEWS NEAR ME

Recent articles & questions

How Much Does a Mechanic Make in Kentucky?

Automotive technician jobs in Kentucky have an mean salary of $35k, with some mechanics earning as much as $40k.

How Much Does a Mechanic Make in Nebraska?

Automotive technician jobs in Nebraska have an average mechanic salary of $38k, while the national average is roughly $37k.

How to Drive Safely without Mirrors If You Have To

Your Your car has mirrors for a very good reason: you need to see behind you and beside you at all times, or your safety is compromised. You’ll also be a threat to other people on the road. But what...

Why is my check engine light on an the ETS light too

Hello. The ETS light is part of the traction control system. It can illuminate for many reasons. The check engine light (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) is likely because the component that has failed is used by another system in the car and also...

car wont start and knocking noise

When you turn the engine over with the starter motor, if there is an unusual and marked noise, such as knocking, that did not exist before, that most likely signifies that something has broken. Is the car, by chance, out...

02 Silverado extended cab 4.8. Wouldn't start. Put new full pump on, started up and drove it. Next day, wouldn't start. Exchanged fuel pump. Started right up. Drove it a while during the day. All of sudden, won't start.

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 (844) 997-3624 · hi@yourmechanic.com