How to maintain and check the power brake booster unit on Mercury Grand Marquis?

First of all, the power brake booster unit does not require any special maintenance. The vacuum hose and case should be inspected from time to time. If necessary, a new or factory-rebuilt unit should be installed. To check the booster, the brake pedal must be depressed a number of times without starting the engine. After starting the engine, check for any changes in pedal reserve distance. A "hard" pedal feel indicates booster problems or vacuum hose leaks. Removing involves detaching the master cylinder, vacuum hose, electrical connector and push rod retaining clip. Finally, remove the nuts attaching the booster to the firewall and lift it out. For installation purposes, put the booster on the firewall, tighten the nuts then reconnect push-rod and brake light switch before attaching the master cylinder back on it. Adjusting pushrod length may be necessary in some cases.

Genuine Mercury Grand Marquis Brake Booster

Brake Power Booster

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12 Brake Boosters found

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Mercury Grand Marquis Booster Assembly Brake
Part Number: F6AZ2005B
$151.96 MSRP: $211.09
You Save: $59.13 (29%)
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Product Specifications
- Other Name: Booster Assy - Brake
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1995-1997 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT AODE
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Mercury Grand Marquis Booster Assembly - Brake
Part Number: 7W7Z-2005-A
$306.13 MSRP: $425.27
You Save: $119.14 (29%)
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Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster, Power Booster
- Replaces: 6W7Z-2005-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2011 Mercury Grand Marquis | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, 4AT 4R70W, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Booster Assembly Brake
Part Number: F4AZ2005B
$139.16 MSRP: $193.32
You Save: $54.16 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992-1994 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT AOD, 4AT AODE
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Mercury Grand Marquis Booster Assembly - Brake
Part Number: 3W1Z-2005-AA
Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster, Power Booster
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2004 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Booster Assembly - Brake
Part Number: 6W7Z-2005-AA
Product Specifications
- Other Name: Booster Assy - Brake
- Replaced by: 7W7Z-2005-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Booster Assembly - Brake
Part Number: 1W1Z-2005-AA
Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster, Power Booster
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2006 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Booster Assembly Brake
Part Number: F4AZ2005A
Product Specifications
- Other Name: Booster Assy - Brake
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT AODE
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Mercury Grand Marquis Booster Assembly - Brake
Part Number: F6AZ-2005-A
Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992-1997 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT AOD, 4AT AODE
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Mercury Grand Marquis Booster Assembly - Brake
Part Number: F8AZ-2005-AA
Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster, Power Booster
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-1999 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Booster Assembly Brake
Part Number: F8AZ2B195AA
Product Specifications
- Other Name: Booster Assy - Brake; Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-1999 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Booster Assembly Brake
Part Number: F8AZ2B195DA
Product Specifications
- Other Name: Booster Assy - Brake; Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-1999 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Booster Assembly - Brake
Part Number: XW7Z-2005-AA
Product Specifications
- Other Name: Booster Assy - Brake; Brake Booster, Power Booster
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2000 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W

Mercury Grand Marquis Brake Booster

The Brake Booster is an integral part of the mechanical system of Mercury Grand Marquis automobile, which lessens the degree of affixing force demanded to set off the brakes. The booster increases hydraulic pressure with the help of vacuum chamber and thus multiplies the force which a driver applies to the brake pedal. There are two main types of boosters used in Grand Marquis vehicles: The two classes are vacuum-operated boosters and hydraulic boosters. In vacuum boosters, the pressure applied is differenced between engine vacuum and the atmospheric pressure in hydraulic boosters, fluid pressure is used for brake application. Despite that vacuum power boosters are quite stable, they can sometimes break down which will need replacement. Also, the Performance brake boosters and Power brake conversion kits are other related products for users who want to improve their vehicles' braking systems.

We provide a wide range of Mercury Grand Marquis Brake Booster at the best prices possible. If you need Mercury Grand Marquis Brake Booster, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.

Mercury Grand Marquis Brake Booster Parts Questions & Experts Answers

Booster Assembly - Brake
XW7Z-2005-AA
Q: How to maintain and check the power brake booster unit on Mercury Grand Marquis?
A: First of all, the power brake booster unit does not require any special maintenance. The vacuum hose and case should be inspected from time to time. If necessary, a new or factory-rebuilt unit should be installed. To check the booster, the brake pedal must be depressed a number of times without starting the engine. After starting the engine, check for any changes in pedal reserve distance. A "hard" pedal feel indicates booster problems or vacuum hose leaks. Removing involves detaching the master cylinder, vacuum hose, electrical connector and push rod retaining clip. Finally, remove the nuts attaching the booster to the firewall and lift it out. For installation purposes, put the booster on the firewall, tighten the nuts then reconnect push-rod and Brake Light Switch before attaching the master cylinder back on it. Adjusting pushrod length may be necessary in some cases.