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Crown Automotive RT31017 Power Brake Booster Conversion Kit for 87-90 Jeep Wrangler YJ with 1-1/8" Master Cylinder Bore Size & 4 Wheel Disc Brakes or Aftermarket Axles & Without ABS

Quadratec Part #: 56210.1010
Crown Automotive Part #: RT31017
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.
Installation Notes
Installation Difficulty:
Level 3Advanced

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.

Installation Time: 3-5 hours
Parts Included

1 Dual Diaphragm Brake Booster
1 High Pressure Brake Master Cylinder

12 month / 12,000 Mile Limited Warranty.
  • Shipping Weight: 19lb
  • Shipping Dimensions: 19in x 13in x 8in (L x W x H)
  • Jeep Wrangler (YJ)

  • 1990 Jeep Wrangler (YJ)
  • 1989 Jeep Wrangler (YJ)
  • 1988 Jeep Wrangler (YJ)
  • 1987 Jeep Wrangler (YJ)
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