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Mopar J8 Master Cylinder and Brake Booster - JK Automatic Transmission

Mopar J8 Master Cylinder and Brake Booster

JK Automatic Transmission

Mopar J8 Master Cylinder and Brake Booster - JK Automatic Transmission
Read 6 Reviews | 11 Q&As
Part # P5160050We price match! Call 866-601-5340!
$319.00
+$ Oversize Shipping Surcharge

Out of Stock. Average time to ship: 30 days
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Features & Product Details

Have you swapped in the Mopar Big Brake kit (#77072434), one of those super trick TeraFlex Delta brake kits (#4403450) or some other brake kit needing more fluid? If so, the Mopar J8 Master Cylinder and Brake Booster kit is for you!

Jeep Jk Mopar J8 Master Cylinder & Brake Booster Features:
  • Performance brake booster
  • Big 1-1/8 inch master cylinder bore
  • Increases brake force
  • Designed for Heavy-duty axles
  • Straightforward installation
  • Boost the Performance of your Jeep's Brakes Mopar began as a family owned business that eventually transformed into a trusted brand to provide you with products that are 100% guaranteed authentic, brand new, and first quality. Their J8 Master Cylinder and Brake Booster is no exception to this as it features high-quality materials for long-lasting functionality. The purpose of this cylinder and brake booster is to make it easier for your Jeep to brake by increasing the force exerted without the need for additional force applied on the foot pedal. This keeps you safe during both daily driving and off-road applications, so you can stop your vehicle the way it was intended to stop.

    Notes:
  • Same OEM parts included in Mopar's Big Brake Kit (P5160051).
  • Fits automatic transmission only
  • Does not fit with underhood ARB twin compressor mount
  • ***THIS IS A MOPAR PERFORMANCE PART AND IS SOLD AS IS, THIS PART CARRIES NO WARRANTY FROM MOPAR

    Specifications

    Brand: Mopar
    Type: Master Cylinder
    Mfgr. Warranty: No Warranty
    Condition: New Product
    Return Policy:
    Standard

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    REVIEWS & CUSTOMER MEDIA

    6 Reviews
    4.8 out of 5 Stars
    5 Stars
    (5)
    4 Stars
    (1)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    No user media. You can upload a photo or video of your install by posting a review.
    Works wonderfully 9 months ago
    5out of 5stars
    Brandon
    I installed a Grow big brake kit only to realize that was a useless upgrade with out a larger booster/master upgrade. Install is a big pain but a competent DIYer should have no problem with. I installed this in a manual trans with a Wilwood remote res, Evo compressor mount and ARB High Output Single, it all fits
      
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    Will need a custom bent brake line for 2018 Jeep JKU.  9 months ago
    4out of 5stars
    IndioN8
    Everything was going great until it came time to re-attach the factory brake lines. 1 line fit perfectly and the other one was off 1 3/4in.
      
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    J8 brake booster install. 10 months ago
    5out of 5stars
    JKJV
    I installed this in my JK with the intention of adding a big brake kit. To install I had to separate the cylinder from the booster as it would not slide in together, removal of the ABS hydraulic unit was not necessary. If the cylinder isn't installed straight on the rod it will bend the rod or ruin the piston inside the cylinder. 2 steel lines to the unit did have to be rebent to fit the cylinder as it is 1 and 1/4 or 1/2 inches longer than the stock assembly. I bled it by installing the assembly and routing the lines back into the reservoir and using the brake pedal. I did not want to deal with a vice and screwdriver to bench bleed. I did a complete brake overhall with Teraflex Delta brake kit as well as added steel braided lines so overall braking performance increased.
      
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    1 of 1 people found the following review helpful
    Mopar BBK is the answer you are looking for... 2 years ago
    5out of 5stars
    Jcs2179
    If you have finally decided to upgrade your factory Jeep Wrangler brakes to handle the extra weight of that suspension upgrade, the bigger wheels, heavier tires, bulky roof rack, winch, fridge, and bumpers, you have no doubt purchased one of the good quality kits from the Usual Suspects. None of the kits however, tells you about the soft/mushy pedal you'll get as a direct result of the bigger volume of brake fluid you will be pushing through the system, but with nowhere to pull this precious resource from. Its just simply not there. The kits mention nouns like might, maybe, sometimes, but the real deal is if you want those expensive upgraded brakes you just bought to perform their best, you MUST get this kit. The reservoir is much bigger, the M/C has bigger bore size to pass more fluid through, and the bigger brake booster...well, it boost!! Its instant stopping power. A word of caution: you must bench bleed the M/C prior to installation, and the kit does not fit if you've installed the ARB dual/single compressor and braket under the hood. The Mopar BBK kit is dimple a bit bigger and it won't fit.
      
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    1 of 1 people found the following review helpful
    '14 Rubi w/ J8 2 years ago
    5out of 5stars
    Power Steering Upgrade
    I installed UD60's on my 14 JK Rubi, the brake rotors and calipers on the UD60's are huge and I wanted to make sure the mc and brake booster were adequate for the massive brakes. After installing the new mc and brake booster I couldn't get the brake pedal to firm up. I bled the brakes every way possible and had the anti lock module bled as well and yet the brake pedal would continue to go all the way to the floor. I contacted Northridge 4x4 and they sent me a replacement mc and brake booster right away. The first kit that was sent didn't have a new seal with it, that goes between the mc and brake booster. I was instructed to use the oem seal which I did, and would later determine that that's what was causing the issue. The second kit that was sent did indeed have a new seal, after installing that kit, the brakes are better than when the jeep was new. Aside from the snafu with no seal being with the first kit, this setup is fantastic.
      
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    QUESTIONS & ANSWERS

    • Q: Compatibility with 2014 JKU  jespersen701 year ago

      I have a 2014 JKU and I installed a Teraflex front big brake kit, I would like to install the Mopar J8 master cylinder and brake booster but it says it’s not compatible with 2014 only 2015 to 2018. Why is this kit not compatible with 2014? What is different and can I make it work? Thank you
    • Q: J8 booster / master cylinder with synergy bracket  Collin1 year ago

      Will this work with the synergy compressor bracket and single (small) ARB compressor
      • 2 of 2 people found the following answer helpful

        A:  This will not work with the Synergy compressor bracket. You have to relocate that in order to use the bigger brake booster system.

        Northridge Chris @ Northridge4x4 1 year ago  
          
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    • Q: J8 MC +Booster with powerstop?  prestonseaver2 years ago

      Will this kit work with the powerstop factory replacement sized calipers, or will the pedal not feel right since the calipers are not as big as the BBK?

    This Part Fits

    Jeep Wrangler JK
    70th Anniversary
    2011 Jeep Wrangler JK 70th Anniversary
    Altitude
    2018 Jeep Wrangler JK Altitude
    Freedom Edition
    2018 Jeep Wrangler JK Freedom Edition
    Islander
    2010 Jeep Wrangler JK Islander
    Mountain
    2010 Jeep Wrangler JK Mountain
    Rubicon
    2007 Jeep Wrangler JK Rubicon
    2008 Jeep Wrangler JK Rubicon
    2009 Jeep Wrangler JK Rubicon
    2010 Jeep Wrangler JK Rubicon
    2011 Jeep Wrangler JK Rubicon
    2012 Jeep Wrangler JK Rubicon
    2013 Jeep Wrangler JK Rubicon
    2014 Jeep Wrangler JK Rubicon
    2015 Jeep Wrangler JK Rubicon
    2016 Jeep Wrangler JK Rubicon
    2017 Jeep Wrangler JK Rubicon
    2018 Jeep Wrangler JK Rubicon
    Rubicon Recon
    2017 Jeep Wrangler JK Rubicon Recon
    2018 Jeep Wrangler JK Rubicon Recon
    Sahara
    2007 Jeep Wrangler JK Sahara
    2008 Jeep Wrangler JK Sahara
    2009 Jeep Wrangler JK Sahara
    2010 Jeep Wrangler JK Sahara
    2011 Jeep Wrangler JK Sahara
    2012 Jeep Wrangler JK Sahara
    2013 Jeep Wrangler JK Sahara
    2014 Jeep Wrangler JK Sahara
    2015 Jeep Wrangler JK Sahara
    2016 Jeep Wrangler JK Sahara
    2017 Jeep Wrangler JK Sahara
    2018 Jeep Wrangler JK Sahara
    Sport
    2010 Jeep Wrangler JK Sport
    2011 Jeep Wrangler JK Sport
    2012 Jeep Wrangler JK Sport
    2013 Jeep Wrangler JK Sport
    2014 Jeep Wrangler JK Sport
    2015 Jeep Wrangler JK Sport
    2016 Jeep Wrangler JK Sport
    2017 Jeep Wrangler JK Sport
    2018 Jeep Wrangler JK Sport
    Sport S
    2016 Jeep Wrangler JK Sport S
    2017 Jeep Wrangler JK Sport S
    2018 Jeep Wrangler JK Sport S
    Unlimited
    2012 Jeep Wrangler JK Unlimited
    Unlimited 70th Anniversary
    2011 Jeep Wrangler JK Unlimited 70th Anniversary
    Unlimited Altitude
    2012 Jeep Wrangler JK Unlimited Altitude
    2018 Jeep Wrangler JK Unlimited Altitude
    Unlimited Freedom Edition
    2018 Jeep Wrangler JK Unlimited Freedom Edition
    Unlimited Hard Rock
    2015 Jeep Wrangler JK Unlimited Hard Rock
    Unlimited Islander
    2010 Jeep Wrangler JK Unlimited Islander
    Unlimited Mountain
    2010 Jeep Wrangler JK Unlimited Mountain
    2012 Jeep Wrangler JK Unlimited Mountain
    Unlimited Rubicon
    2007 Jeep Wrangler JK Unlimited Rubicon
    2008 Jeep Wrangler JK Unlimited Rubicon
    2009 Jeep Wrangler JK Unlimited Rubicon
    2010 Jeep Wrangler JK Unlimited Rubicon
    2011 Jeep Wrangler JK Unlimited Rubicon
    2012 Jeep Wrangler JK Unlimited Rubicon
    2013 Jeep Wrangler JK Unlimited Rubicon
    2014 Jeep Wrangler JK Unlimited Rubicon
    2015 Jeep Wrangler JK Unlimited Rubicon
    2016 Jeep Wrangler JK Unlimited Rubicon
    2017 Jeep Wrangler JK Unlimited Rubicon
    2018 Jeep Wrangler JK Unlimited Rubicon
    Unlimited Rubicon Recon
    2017 Jeep Wrangler JK Unlimited Rubicon Recon
    2018 Jeep Wrangler JK Unlimited Rubicon Recon
    Unlimited Sahara
    2007 Jeep Wrangler JK Unlimited Sahara
    2008 Jeep Wrangler JK Unlimited Sahara
    2009 Jeep Wrangler JK Unlimited Sahara
    2010 Jeep Wrangler JK Unlimited Sahara
    2011 Jeep Wrangler JK Unlimited Sahara
    2012 Jeep Wrangler JK Unlimited Sahara
    2013 Jeep Wrangler JK Unlimited Sahara
    2014 Jeep Wrangler JK Unlimited Sahara
    2015 Jeep Wrangler JK Unlimited Sahara
    2016 Jeep Wrangler JK Unlimited Sahara
    2017 Jeep Wrangler JK Unlimited Sahara
    2018 Jeep Wrangler JK Unlimited Sahara
    Unlimited Sport
    2010 Jeep Wrangler JK Unlimited Sport
    2011 Jeep Wrangler JK Unlimited Sport
    2012 Jeep Wrangler JK Unlimited Sport
    2013 Jeep Wrangler JK Unlimited Sport
    2014 Jeep Wrangler JK Unlimited Sport
    2015 Jeep Wrangler JK Unlimited Sport
    2016 Jeep Wrangler JK Unlimited Sport
    2017 Jeep Wrangler JK Unlimited Sport
    2018 Jeep Wrangler JK Unlimited Sport
    Unlimited Sport S
    2016 Jeep Wrangler JK Unlimited Sport S
    2017 Jeep Wrangler JK Unlimited Sport S
    2018 Jeep Wrangler JK Unlimited Sport S
    Unlimited Willys Wheeler
    2014 Jeep Wrangler JK Unlimited Willys Wheeler
    2018 Jeep Wrangler JK Unlimited Willys Wheeler
    Unlimited Willys Wheeler W
    2018 Jeep Wrangler JK Unlimited Willys Wheeler W
    Unlimited X
    2007 Jeep Wrangler JK Unlimited X
    2008 Jeep Wrangler JK Unlimited X
    2009 Jeep Wrangler JK Unlimited X
    2010 Jeep Wrangler JK Unlimited X
    2011 Jeep Wrangler JK Unlimited X
    Willys Wheeler
    2014 Jeep Wrangler JK Willys Wheeler
    2018 Jeep Wrangler JK Willys Wheeler
    Willys Wheeler W
    2018 Jeep Wrangler JK Willys Wheeler W
    X
    2007 Jeep Wrangler JK X
    2008 Jeep Wrangler JK X
    2009 Jeep Wrangler JK X
    2010 Jeep Wrangler JK X
    X-S
    2009 Jeep Wrangler JK X-S