Crown Automotive
Power Brake Booster Conversion Kit for 87-90 Jeep Wrangler YJ | RT31017
Power Brake Booster Conversion Kit for 87-90 Jeep Wrangler YJ | RT31017
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Heavy Duty Power Brake Booster Conversion Kit
1987-1990 Jeep Wrangler YJ | Aftermarket Axles | Without ABS | RT31017
Product Overview
Upgrade the braking system on your 1987-1990 Jeep Wrangler YJ with this Heavy Duty Power Brake Booster Conversion Kit, specifically designed for vehicles equipped with aftermarket axles and without ABS. The kit combines an 8-inch dual diaphragm power brake booster with a 1-1/8-inch bore master cylinder for the specified upgraded braking system application.
The larger bore master cylinder is designed for axle upgrades utilizing larger brake calipers. This configuration is intended for modified Jeep Wrangler YJ braking systems where aftermarket axles require the specified master cylinder bore, distinguishing it from smaller bore configurations designed for different brake system requirements.
The kit includes a zinc-coated brake booster, master cylinder, bench bleeding kit, and installation instructions. It is intended for replacing the existing brake booster and master cylinder as part of the specified power brake conversion.
Vehicle Compatibility
Jeep Wrangler Applications
- 1987-1990 Jeep Wrangler (YJ) - Without ABS; equipped with aftermarket axles
Important: This kit is specifically identified for 1987-1990 Wrangler YJ models without ABS and with aftermarket axles. Both requirements must be satisfied for the listed application. Verify the existing axle configuration and braking system before ordering.
Product Highlights
- Heavy Duty Dual Diaphragm Booster: Features an 8-inch power brake booster for the specified conversion application.
- 1-1/8-Inch Bore Master Cylinder: Designed for upgraded axle configurations utilizing larger brake calipers.
- Aftermarket Axle Application: Specifically intended for Wrangler YJ vehicles equipped with aftermarket axles.
- Zinc-Coated Brake Booster: Includes a brake booster with a zinc-coated finish.
- Specified Conversion Components: Supplied with the brake booster, master cylinder, bench bleeding kit, and installation instructions.
What's Included
- Heavy Duty 8-Inch Dual Diaphragm Brake Booster
- 1-1/8-Inch Bore Master Cylinder
- Bench Bleeding Kit
- Installation Instructions
Kit contents are based on the supplied product information. Additional mounting hardware, brake lines, fittings, or other brake system components are not specified.
Product-Specific Technical Details
- Component: Power Brake Booster Conversion Kit
- Brake Booster Type: Heavy Duty Dual Diaphragm
- Brake Booster Diameter: 8 Inches
- Master Cylinder Bore: 1-1/8 Inches
- Brake Booster Finish: Zinc-Coated
- Intended Axle Configuration: Aftermarket Axles
- Master Cylinder Application: Upgraded Axles with Larger Brake Calipers
- ABS Compatibility: Without ABS
- Vehicle Application: 1987-1990 Jeep Wrangler YJ
- Product Reference: RT31017
Additional booster dimensions, hydraulic specifications, brake line connection details, and mounting hardware requirements have not been provided.
Installation & Fitment Notes
- Confirm the vehicle is a 1987-1990 Jeep Wrangler YJ.
- Verify that the vehicle is equipped without ABS.
- Confirm the vehicle has aftermarket axles and that the 1-1/8-inch bore master cylinder is appropriate for the installed braking system.
- The larger bore master cylinder is intended for upgraded axle configurations utilizing larger brake calipers.
- Installation involves replacing the existing brake booster and master cylinder.
- Use the included bench bleeding kit and follow the supplied installation instructions and applicable vehicle service procedures.
Brake system modifications and aftermarket axle configurations may vary. Confirm compatibility of the existing brake components, hydraulic connections, and mounting arrangement before beginning installation.
Product Reference
Part Number: RT31017
Configuration: 8-Inch Dual Diaphragm Brake Booster with 1-1/8-Inch Bore Master Cylinder
The part number above identifies the specified brake booster conversion kit. Verify the booster configuration, master cylinder bore, and vehicle application before purchasing.
Fitment Reminder
This kit is designed for 1987-1990 Jeep Wrangler YJ models without ABS and equipped with aftermarket axles. Confirm the required 1-1/8-inch master cylinder bore, brake caliper configuration, and existing braking system compatibility before installation.
Please verify vehicle model year, non-ABS configuration, aftermarket axle application, master cylinder bore requirements, and supplied product reference before ordering.
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