How to remove and replace the brake master cylinder on Mercury Mariner?

The procedure to remove and install the brake master cylinder begins with disconnecting the electrical connector of the brake fluid level warning switch. A proper suction device should be utilized to collect brake fluid from the brake master cylinder reservoir. To replace the brake master cylinder of a manual transmission vehicle you should loosen the clamp before disconnecting the clutch hose from the reservoir then apply a stopper to the master cylinder feed hose. The brake master cylinder port involves two brake tube fittings that need removal before plugging the ports along with tightening them to 25 Nm (18 lb-ft) during installation. Thoroughly discard the two brake master cylinder nuts and install new ones with 25 Nm (18 lb-ft) torque during assembly. Put back the brake master cylinder assembly according to the removal procedure while performing a master cylinder bleed operation and clutch master cylinder bleed if needed. The system needs clean brake fluid which matches manufacturer standards to ensure protection from contamination while immediately washing water on brake fluid spills on painted or plastic surfaces.

How to service and repair the brake master cylinder on Mercury Mariner?

Services on the brake master cylinder begin with disconnecting the battery and brake fluid warning switch electrical connector. A correct suction system should be used to draw brake fluid from the brake master cylinder reservoir. Manual transmission vehicles require disconnecting and plugging the feed line to the master cylinder from the clutch. When installing a new brake master cylinder you must remove the brake fluid reservoir followed by disconnecting two brake line fittings then plug all components while tightening the ports to 15 Nm (11 ft. lbs.). Use new master cylinder nuts and discard the previous ones before screwing them to 25 Nm (18 ft. lbs.). Follow the removal process in reverse order to install the new master cylinder assembly while performing proper bleeding of the master cylinder as well as any necessary bleeding of the clutch master cylinder. DOT 3 motor vehicle brake fluid remains the only acceptable fluid for brake upkeep since improper fluid leads to permanent damage of brake elements. Additionally users must always take caution against fluid contact to eyes or painted or plastic surfaces then immediately clean any spills with water.

OEM Mercury Mariner Brake Master Cylinder

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11 Brake Master Cylinders found

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Mercury Mariner Master Cylinder Part Number: 9L8Z-2140-A
$147.65 MSRP: $242.95
You Save: $95.30 (40%)
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Product Specifications
- Other Name: Kit - Master Cylinder Repair; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | Base, Premier | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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Mercury Mariner Master Cylinder Part Number: 8L8Z-2140-A
$137.16 MSRP: $230.91
You Save: $93.75 (41%)
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Product Specifications
- Other Name: Kit - Master Cylinder Repair; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Mariner | Base, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Mariner Master Cylinder Part Number: 9M6Z-2140-A
$155.63 MSRP: $262.00
You Save: $106.37 (41%)
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Product Specifications
- Other Name: Kit - Master Cylinder Repair; Brake Master Cylinder
- Manufacturer Note: Service Kit
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | Hybrid | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV)
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Mercury Mariner Master Cylinder Part Number: 6L8Z-2140-C
$145.81 MSRP: $201.71
You Save: $55.90 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Kit - Master Cylinder Repair; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | Base, Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Mariner Master Cylinder Part Number: 6L8Z-2140-B
$95.13 MSRP: $129.46
You Save: $34.33 (27%)
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Product Specifications
- Other Name: Kit - Master Cylinder; Brake Master Cylinder; Kit - Master Cylinder Repair
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | Base, Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Mariner Master Cylinder Part Number: 9L8Z-2140-C
$91.82 MSRP: $127.03
You Save: $35.21 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Kit - Master Cylinder Repair; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | Base, Premier | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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Mercury Mariner Master Cylinder Part Number: 8M6Z-2140-A
Product Specifications
- Other Name: Cylinder Assembly - Master; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Mariner | Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV)
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Mercury Mariner Master Cylinder Part Number: 5M6Z-2140-B
Product Specifications
- Other Name: Cylinder Assembly - Master; Brake Master Cylinder
- Replaces: 5M6Z-2140-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2007 Mercury Mariner | Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV)
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Mercury Mariner Master Cylinder Part Number: 8L8Z-2140-C
Product Specifications
- Other Name: Kit - Master Cylinder Repair; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2008 Mercury Mariner | Base, Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
View related parts
Mercury Mariner Master Cylinder Part Number: 6L8Z-2140-D
Product Specifications
- Other Name: Kit - Master Cylinder; Brake Master Cylinder; Kit - Master Cylinder Repair
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | Base, Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
View related parts
Mercury Mariner Master Cylinder Part Number: 6L8Z-2140-A
Product Specifications
- Other Name: Kit - Master Cylinder Repair; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008 Mercury Mariner | Base, Convenience, Luxury, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS

Mercury Mariner Brake Master Cylinder

OEM Brake Master Cylinder boasts unmatched quality. Each part goes through full quality checks. They adhere to Mercury's official factory standards. These steps remove flaws and inconsistencies. So you can get Brake Master Cylinder with long life and a perfect fit. Come to our website and find genuine Mercury Mariner parts. We keep a wide inventory of OEM Mariner parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

The Brake Master Cylinder is an essential part of Mercury Mariner vehicles as it transforms the pressure coming from the foot in terms of hydraulic force. The hydraulic pressure is then transmitted to the slave cylinders and these then apply the brakes to create the needed friction to effect the stoppage of the vehicle. In most cases, the brake system of Mercury Mariner is designed as a dual circuit master cylinder so that if one circuit is inoperable the other one will afford sufficient stopping power. The Brake Master Cylinder is often located on the front of the vacuum power booster and may incorporated built-in or an additional working fluid reservoir. There are two kinds of integral reservoirs - those with a single threaded cap, and external reservoirs that may have one or two threaded caps. Over the years, variations in design may have occurred, but the fundamental function remains consistent: for the purpose of preserving appropriate levels of braking efficiency and safety in the Mercury Mariner. Failure of brakes is calamitous and requires frequent check-ups to avoid some mishaps, which may include fluid leaks, or internal failures of braking system.

Mercury Mariner Brake Master Cylinder Parts and Q&A

Master Cylinder
9L8Z-2140-A
Q: How to remove and replace the brake master cylinder on Mercury Mariner?
A:
The procedure to remove and install the brake master cylinder begins with disconnecting the electrical connector of the brake fluid level warning switch. A proper suction device should be utilized to collect brake fluid from the brake master cylinder reservoir. To replace the brake master cylinder of a manual transmission vehicle you should loosen the clamp before disconnecting the clutch hose from the reservoir then apply a stopper to the master cylinder feed hose. The brake master cylinder port involves two brake tube fittings that need removal before plugging the ports along with tightening them to 25 Nm (18 lb-ft) during installation. Thoroughly discard the two brake master cylinder nuts and install new ones with 25 Nm (18 lb-ft) torque during assembly. Put back the brake master cylinder assembly according to the removal procedure while performing a master cylinder bleed operation and clutch master cylinder bleed if needed. The system needs clean brake fluid which matches manufacturer standards to ensure protection from contamination while immediately washing water on brake fluid spills on painted or plastic surfaces.
Master Cylinder
6L8Z-2140-B
Q: How to service and repair the brake master cylinder on Mercury Mariner?
A:
Services on the brake master cylinder begin with disconnecting the battery and brake fluid warning switch electrical connector. A correct suction system should be used to draw brake fluid from the brake master cylinder reservoir. Manual transmission vehicles require disconnecting and plugging the feed line to the master cylinder from the clutch. When installing a new brake master cylinder you must remove the brake fluid reservoir followed by disconnecting two Brake Line fittings then plug all components while tightening the ports to 15 Nm (11 ft. lbs.). Use new master cylinder nuts and discard the previous ones before screwing them to 25 Nm (18 ft. lbs.). Follow the removal process in reverse order to install the new master cylinder assembly while performing proper bleeding of the master cylinder as well as any necessary bleeding of the clutch master cylinder. DOT 3 motor vehicle brake fluid remains the only acceptable fluid for brake upkeep since improper fluid leads to permanent damage of brake elements. Additionally users must always take caution against fluid contact to eyes or painted or plastic surfaces then immediately clean any spills with water.