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RT Off-Road Dual Diaphragm Power Brake Booster Conversion Kit (87-90 Jeep Wrangler YJ)

Market Price $503.99 You Save 17% ($84.00)
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$419.99 (kit)

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  • Item J12008
  • MPN# DDBYJ1

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Ship to: Ashburn - 20149
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    Details

    These heavy duty power brake conversion kits convert a single diaphragm booster to a dual diaphragm, Setup which creates more stopping power with less pedal pressure.

    Fits:

    Jeep Wrangler (1987-1990),1 1/8" MC Bore Size,4 wheel disc brakes or aftermarket axles.

    NOTE: Engine vacuum needs to be a minimum of 18 inches of vacuum at idle when engine is warm for power brake setup to function properly. Please confirm prior to ordering.

    Fitment: 1987 1988 1989 1990 Details

    CA Residents: Warning: California's Proposition 65

    Will it fit my Wrangler?

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    Questions & Answers (3)

    3 Top Rated Questions

    Does this master cylinder have the same 1/2 and 7/16 port as the stock master cylinder

    • Yes, this item would have the same 1/2 and 7/16 ports as the stock master cylinder.

    Helpful (0)

    Will this conversion work with rear drum brakes and is it simple bolt on replacement? Thanks so much, Aaron

    • The Crown Automotive Dual Diaphragm Power Brake Booster Conversion Kit is designed for the 1991 - 1995 Wrangler YJ Equipped with 4-Wheel Disc Brakes, so unfortunately it would not work with rear drums. The install is also on the Advanced level of skill to install this conversion kit, it is not a simple bolt on install.

    Helpful (0)

    What is the size of the booster in inches

    • The Crown Automotive Dual Diaphragm Power Brake Booster Conversion Kit will have a 1 1/8" Bore master cylinder, however they do not have a listing of the booster diameter for this kit.

    Helpful (0)
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    Customer Reviews (1) Write a Review

    Overall Rating 4

    out of 5 stars

    • Fit 5 5
    • Bang For Your Buck 4 4



    • 4/5

      January 26, 2017

      Significant difference

      Got this to completely rehab a brake system on my yj and boy did it! Braking is now really noticeably better and quicker! Install went pretty well and quick but removal of the old one was a challenge

      Jking

      Year: 1989Submodel: Wrangler

      Helpful (7)

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