7-Inch Dual-Diaphragm Brake Booster & 1-Inch Master Cylinder Disc/Disc Kit
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Custom-built street rods
- Classic cars with four-wheel disc conversions
- Custom trucks with four-wheel disc conversions
Product Overview
A power brake conversion needs the correct balance of pedal travel, vacuum assist and hydraulic pressure. This kit brings the booster, master cylinder and valve together for street rods, restorations and other custom installations rather than pretending to fit every classic vehicle.
Ideal for a brake-system build or conversion where the existing booster is too large, the master cylinder is worn, or the original manual-brake setup is being upgraded.
Key Features & Performance
- This compact 7-inch dual-diaphragm brake booster kit includes a 1-inch bore master cylinder and side-mounted proportioning valve for custom four-wheel-disc brake systems.
- Ideal for a brake-system build or conversion where the existing booster is too large, the master cylinder is worn, or the original manual-brake setup is being upgraded.
- Fitment check: This is a universal-style conversion kit, not a direct-fit vehicle listing. Check firewall mounting, pedal linkage, booster clearance, vacuum supply, brake-line ports and proportioning-valve plumbing.
What Is Included
7-inch dual-diaphragm booster, 1-inch bore master cylinder and side-mount valve kit as advertised.
Fitment Notes
This is a universal-style conversion kit, not a direct-fit vehicle listing. Check firewall mounting, pedal linkage, booster clearance, vacuum supply, brake-line ports and proportioning-valve plumbing.
Frequently Asked Questions
Is this an OEM part? No. This listing describes an aftermarket replacement, service part or accessory unless explicitly stated otherwise. Brand and OE numbers identify intended applications; they do not imply manufacturer authorization.
How do I check compatibility? This is a universal-style conversion kit, not a direct-fit vehicle listing. Check firewall mounting, pedal linkage, booster clearance, vacuum supply, brake-line ports and proportioning-valve plumbing.
Part Summary
Keywords: 7-Inch Dual-Diaphragm Brake Booster & 1-Inch Master Cylinder Disc/Disc Kit, Custom-built street rods, Classic cars with four-wheel disc conversions, Custom trucks with four-wheel disc conversions.
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.