How to Remove a Brake Master Cylinder on Jeep Wrangler?

Before removing the Brake Master Cylinder, vacuum in the booster should first be removed by repeatedly pumping the pedal or by removing and reinstalling the check valve, keeping the grommet undamaged. After that, take out and drain the reservoir fluid (2) and take off the electrical connector for the fluid level (3) from the reservoir. Remove the lines going to the brake (4) and unscrew the mounting nuts (5) from the master cylinder. After removing the pistons, pull out the master cylinder and its cover to empty any liquid that remains. Should the master cylinder reservoir need servicing, follow the correct steps.

How to Properly Install a Brake Master Cylinder Without Causing Leaks on Jeep Wrangler?

Lubricate each grommet with clean brake fluid, put them into the cylinder body and make sure they are well seated by just pressing them in with your thumb. After that, begin the reservoir (1) in the grommets and shake it back and forth as you press it down, checking that the four tabs rest over the nubs (3). If the fluid level sensor (2) has been removed, sit it down into the reservoir and wait for the tabs to click into place, before connecting the electrical connector (3) to the fluid reservoir level switch. After that, take out the prop rod and bleed and fill the base brake system.

OEM Jeep Wrangler Brake Master Cylinder

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7 Brake Master Cylinders found

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Jeep Wrangler Master Cylinder Part Number: 68057474AE
$368.69 MSRP: $537.00
You Save: $168.31 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder - Brake; Brake Master Cylinder; Master Cylinder Assembly; Master Cylinder Brake
- Replaces: 68057474AA, 68057474AD, 68057474AC, 68057474AB, 68003617AB, 68003617AA
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2007-2017 Jeep Wrangler | 70th Anniversary, 75th Anniversary, Rubicon, Sahara, Sport, Sport S, Unlimited Rubicon, Unlimited Sahara, Unlimited X, X | 3.6L V6, 3.8L V6, 6 Cyl 3.6 L GAS, 6 Cyl 3.8 L GAS
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Jeep Wrangler Master Cylinder Part Number: 68385585AD
$282.12 MSRP: $415.00
You Save: $132.88 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder - Brake; Master Cylinder Assembly
- Replaces: 68385585AB, 68385585AC
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2018-2025 Jeep Wrangler | 80th Anniversary, Freedom, Islander, Rubicon, Rubicon X, Sport, Sport S, Unlimited 80th Anniversary, Unlimited Freedom, Unlimited High Altitude, Unlimited High Tide, Unlimited Islander, Unlimited Moab, Unlimited Rubicon, Unlimited Rubicon X, Unlimited Sahara, Unlimited Sahara Altitude, Unlimited Sport, Unlimited Sport Altitude, Unlimited Sport S, Unlimited Willys, Unlimited Willys Sport, Willys, Willys Sport | 2.0L L4, 3.0L V6, 3.6L V6, 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L DIESEL, 6 Cyl 3.6 L GAS, 6 Cyl 3.6 L MILD HYBRID EV-GAS (MHEV)
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Jeep Wrangler Master Cylinder Part Number: 68091278AE
$352.66 MSRP: $514.00
You Save: $161.34 (32%)
Product Specifications
- Other Name: Cylinder - Brake; Brake Master Cylinder; Master Cylinder Assembly; Master Cylinder Brake
- Replaces: 68091278AB, 68045998AB, 68091278AD, 68091278AC, 68091278AA
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2009-2017 Jeep Wrangler | Rubicon, Sahara, Unlimited 70th Anniversary, Unlimited 75th Anniversary, Unlimited Rubicon, Unlimited Sahara, Unlimited Sport, Unlimited Sport S, Unlimited X, X | 3.6L V6, 3.8L V6, 6 Cyl 3.6 L GAS, 6 Cyl 3.8 L GAS
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Jeep Wrangler Master Cylinder Part Number: 4798157
Product Specifications
- Other Name: Master Cylinder - Brake; Brake Master Cylinder; Master Cylinder Brake
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 1997-2006 Jeep Wrangler | 65th Anniversary Edition, Rubicon, SE, Sahara, Sport, Unlimited, Unlimited Rubicon, X | 4 Cyl 2.4 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 4.0 L GAS
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Jeep Wrangler Master Cylinder Part Number: 68465216AA
$171.08 MSRP: $255.00
You Save: $83.92 (33%)
Product Specifications
- Other Name: Cylinder - Brake; Brake Master Cylinder; Master Cylinder Assembly; Master Cylinder Brake
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2021-2024 Jeep Wrangler | Unlimited Rubicon 392 | 8 Cyl 6.4 L GAS
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Jeep Wrangler Master Cylinder Part Number: 4796787
Product Specifications
- Other Name: Master Cylinder - Power Brake
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 1987-1990 Jeep Wrangler | Base, Islander, Laredo, S, Sahara, Sport | 4 Cyl 2.5 L GAS, 6 Cyl 4.2 L GAS
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Jeep Wrangler Master Cylinder Part Number: 4741834
Product Specifications
- Other Name: Cylinder, Brake Master; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 1993-1994 Jeep Wrangler | Base, Renegade, S, SE, Sahara | 4 Cyl 2.5 L GAS, 6 Cyl 4.0 L GAS

Jeep Wrangler Brake Master Cylinder

Choose OEM Brake Master Cylinder that meet Jeep factory standards. Jeep designs and tests every component for precision and durability. Each Brake Master Cylinder follows strict manufacturing steps to lock in quality and fit. If your Jeep Wrangler matters to you, OEM parts make the smart choice. You'll get the exact look, feel, and performance you expect. Shop genuine Wrangler parts at the highly competitive prices online. Enjoy a manufacturer's warranty, a hassle-free return policy, and rapid delivery. No more guesswork with off brands. Get genuine parts with exact fit and true factory performance. Shop with confidence today at JeepPartsDeal.com.

The Brake Master Cylinder in Jeep Wrangler is a component of the braking system in automobiles, which transforms the force exerted by the motorists' foot into hydraulic pressure used to regulate brakes. It works by pumping hydraulic fluid through the system coming into contact with the calipers or the drum break thus providing the degree of friction needed to stop the vehicle. Normally installed at the vacuum power booster of Jeep Wrangler, the Jeep Wrangler Brake Master Cylinder is characterized with dual circuit design where this means that if one circuit has failed, the other one can be relied upon for the supply of brakes power. Jeep Wrangler models have seen between the years' use of cast iron and aluminum master cylinders with differences in reservoir construction, either integrated or separate. Integral reservoirs are fitted with one cap and the external ones can have either one or two threaded caps. Basically, the Brake Master Cylinder can be of various types but in general it is a crucial component that controls the braking system, any sign of leakage or any internal problem is likely to cause a braking problem and this calls for prompt servicing.

Jeep Wrangler Brake Master Cylinder Parts and Q&A

Master Cylinder
68091278AE
Q: How to Remove a Brake Master Cylinder on Jeep Wrangler?
A:
Before removing the Brake Master Cylinder, vacuum in the booster should first be removed by repeatedly pumping the pedal or by removing and reinstalling the check valve, keeping the grommet undamaged. After that, take out and drain the reservoir fluid (2) and take off the electrical connector for the fluid level (3) from the reservoir. Remove the lines going to the brake (4) and unscrew the mounting nuts (5) from the master cylinder. After removing the pistons, pull out the master cylinder and its cover to empty any liquid that remains. Should the master cylinder reservoir need servicing, follow the correct steps.
Master Cylinder
68057474AE
Q: How to Properly Install a Brake Master Cylinder Without Causing Leaks on Jeep Wrangler?
A:
Lubricate each grommet with clean brake fluid, put them into the cylinder body and make sure they are well seated by just pressing them in with your thumb. After that, begin the reservoir (1) in the grommets and shake it back and forth as you press it down, checking that the four tabs rest over the nubs (3). If the fluid level sensor (2) has been removed, sit it down into the reservoir and wait for the tabs to click into place, before connecting the electrical connector (3) to the fluid reservoir level switch. After that, take out the prop rod and bleed and fill the base brake system.