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Dual Diaphragm Power Brake Booster Conversion Kit (91-95 Jeep Wrangler YJ)

Item J12006
ExtremeTerrain no longer carries the Dual Diaphragm Power Brake Booster Conversion Kit (91-95 Jeep Wrangler YJ). Please check out 2018-2022 Jeep JL Brake Components & Hardware | Wrangler for an updated selection.
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    Product Information

    Features, Description, Reviews, Q&A


    • Power Brake Booster Conversion Kit
    • Converts Single Diaphragm Brake System to Dual Diaphragm Setup
    • Creates More Braking Pressure with Less Pedal Effort
    • Reduces Stopping Distance and Increases Off-Road Capability
    • Heavy Duty Design for Extreme Off-Road Use
    • Comes with Master Cylinder and Power Brake Booster
    • 1 1/8 Inch Master Cylinder Bore
    • Requires 18 Inches of Vacuum Pressure at Idle
    • 12 Month / 12,000 Mile Warranty
    • Designed for the 1991 - 1995 Wrangler YJ Equipped with 4-Wheel Disc Brakes or Aftermarket Axles


    Specs. If you want to improve your YJ's braking capability both on and off the road, then you need this dual diaphragm power brake booster conversion kit from. It provides significantly more vacuum assist than your OE single diaphragm brake booster, which translates to more brake line pressure with less pedal effort. This will reduce your stopping distance out on the road, and improve your vehicle placement out on the trail.

    Construction. This conversion requires that your Wrangler create 18-inches of vacuum pressure at warm idle. We recommend upgrading your Wrangler OE brake lines to stainless steel brake lines since they resist brake line expansion which will help you to take full advantage of the added brake line pressure.

    Application. This conversion kit works with 1991 - 1995 YJ Wranglers.

    CA Residents: WARNING: Cancer and Reproductive Harm -


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