How to Ensure Proper Functioning of the Brake Booster on a Mercury Cougar?

To service the vacuum brake booster, remove the air cleaner, mass air flow sensor, and wiring harness connector. For automatic transaxles, take out the fluid dipstick. Detach the master cylinder, brake booster actuator rod clip, and vacuum hose, then remove the brake booster. Reinstall and bleed the brake system.

How to service and repair the vacuum brake booster on Mercury Mariner?

In order to service the vacuum brake booster, unscrew the battery and change master cylinder nuts and tighten them to 25 Nm. Install brake master cylinder and do not disconnect brake tube fittings. Eliminate vacuum hose, BPP switch, and pushrod pin. When reinstalling, tighten the nuts of the brake booster to 23 Nm.

OEM Mercury Brake Booster

Brake Power Booster

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36 Brake Boosters found

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Mercury Brake Booster Part Number: 3W1Z-2005-AA
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Power Booster
Fits the following Mercury Models:
- Grand Marquis | 2003-2004 | GS, LS, LSE | 8 Cyl 4.6 L GAS
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Mercury Brake Booster Part Number: 5L2Z-2005-B
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Booster Assembly
- Replaces: 1L5Z-2005-AA, XL2Z-2005-AA
Fits the following Mercury Models:
- Mountaineer | 1999-2001 | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Brake Booster Part Number: 5L8Z-2002-AA
Product Specifications
- Other Name: Kit - Brake Booster Repair; Power Brake Booster; Booster Assembly
Fits the following Mercury Models:
- Mariner | 2005-2006 | Base, Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Brake Booster Part Number: 5L8Z-2002-BA
Product Specifications
- Other Name: Kit - Brake Booster Repair; Power Brake Booster; Booster Assembly
Fits the following Mercury Models:
- Mariner | 2005-2006 | Base, Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Booster Assembly Part Number: 6L2Z-2002-B
Product Specifications
- Other Name: Kit - Brake Booster Repair; Power Brake Booster; Brake Booster
- Manufacturer Note: Service Kit
Fits the following Mercury Models:
- Mountaineer | 2006 | Convenience, Luxury, Premier | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Brake Booster, Driver Side Part Number: F7RZ-2005-AA
Product Specifications
- Other Name: Booster Assembly - Brake; Booster Assembly
- Manufacturer Note: LHD, without ABS
- Position: Driver Side
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base, S, V6 | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
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Mercury Brake Booster Part Number: 9E5Z-2005-A
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Power Booster; Booster
- Manufacturer Note: When Replacing This Component, 2L523 Has To Be Replaced
Fits the following Mercury Models:
- Milan | 2010-2011 | Hybrid | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV)
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Mercury Brake Booster Part Number: 5F1Z-2005-B
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Power Booster
- Replaces: 3F1Z-2005-BA
Fits the following Mercury Models:
- Sable | 2001-2005 | GS, LS, LS Premium | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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Mercury Brake Booster Part Number: 5L2Z-2005-A
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Booster Assembly
- Replaces: 3L2Z-2005-AB
Fits the following Mercury Models:
- Mountaineer | 2002-2005 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Brake Booster Part Number: 6F9Z-2005-AA
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Power Booster
- Replaces: 5F9Z-2005-AA
Fits the following Mercury Models:
- Montego | 2005-2007 | Luxury, Premier | 6 Cyl 3.0 L GAS
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Mercury Brake Booster Part Number: 6L5Z-2005-AA
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Booster Assembly
- Replaces: 3L5Z-2005-AA
Fits the following Mercury Models:
- Mountaineer | 1998 | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Brake Booster Part Number: 6L8Z-2002-B
Product Specifications
- Other Name: Kit - Brake Booster; Power Brake Booster; Booster Assembly; Kit - Brake Booster Repair
Fits the following Mercury Models:
- Mariner | 2006-2007 | Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Brake Booster Part Number: 7F2Z-2005-A
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Power Booster
- Replaces: 6F2Z-2005-A
Fits the following Mercury Models:
- Monterey | 2004-2007 | Base, Convenience, Luxury, Premier | 6 Cyl 4.2 L GAS
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Mercury Brake Booster Part Number: F57Z-2005-A
Product Specifications
- Other Name: Booster Assembly - Brake; Power Brake Booster; Booster Assembly
Fits the following Mercury Models:
- Mountaineer | 1997 | Base | 8 Cyl 5.0 L GAS
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Mercury Brake Booster Part Number: F6AZ-2005-A
Product Specifications
- Other Name: Booster Assembly - Brake
Fits the following Mercury Models:
- Grand Marquis | 1992-1997 | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Booster Assembly Part Number: F77Z2005HA
Product Specifications
- Other Name: Booster Assembly - Brake; Brake Booster
Fits the following Mercury Models:
- Mountaineer | 1997 | Base | 8 Cyl 5.0 L GAS
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Mercury Brake Booster Part Number: F8AZ-2005-AA
Product Specifications
- Other Name: Booster Assembly - Brake; Power Booster
Fits the following Mercury Models:
- Grand Marquis | 1998 | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Brake Booster Part Number: F8CZ-2005-AA
Product Specifications
- Other Name: Booster Assembly - Brake; Booster Assembly
- Manufacturer Note: A/T
Fits the following Mercury Models:
- Tracer | 1998-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Brake Booster Part Number: F8CZ-2005-BA
Product Specifications
- Other Name: Booster Assembly - Brake; Booster Assembly
Fits the following Mercury Models:
- Tracer | 1997-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Brake Booster Part Number: XF1Z-2005-AA
Product Specifications
- Other Name: Booster Assembly - Brake; Power Booster
- Manufacturer Note: exc. Flex Fuel
Fits the following Mercury Models:
- Sable | 1996-1999 | G, GS, LS, LS Premium | 6 Cyl 3.0 L GAS

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Mercury Brake Booster Parts and Q&A

Brake Booster, Driver Side
F7RZ-2005-AA
Q: How to Ensure Proper Functioning of the Brake Booster on a Mercury Cougar?
A: To service the vacuum brake booster, remove the air cleaner, mass air flow sensor, and wiring harness connector. For automatic transaxles, take out the fluid dipstick. Detach the master cylinder, brake booster actuator rod clip, and vacuum hose, then remove the brake booster. Reinstall and bleed the brake system.
Brake Booster
5L8Z-2002-AA
Q: How to service and repair the vacuum brake booster on Mercury Mariner?
A: In order to service the vacuum brake booster, unscrew the battery and change master cylinder nuts and tighten them to 25 Nm. Install brake master cylinder and do not disconnect brake tube fittings. Eliminate vacuum hose, BPP switch, and pushrod pin. When reinstalling, tighten the nuts of the brake booster to 23 Nm.