ATE 300083 Power Brake Booster

ATE Original Vacuum Brake Booster

The ATE Original Brake Booster, Vacuum is a direct-fit power brake booster for Porsche applications that need consistent pedal assist and reliable braking response. Built with a 9-inch metal housing and a single diaphragm design, this ATE brake booster supports smooth, low-effort braking in everyday stop-and-go driving and during harder emergency stops.

Part number 300083 is part of the ATE Original line, which focuses on OE-style replacement parts with the same quality standards used in original equipment applications. For Porsche 924, Porsche 944, and Porsche 968 brake booster replacement, this vacuum booster is built for straightforward service and dependable pedal feel.

• Vacuum power brake booster for OE-style brake assist
• 9-inch metal housing with single diaphragm construction
• Brake pedal rod extension included
• Master cylinder not included
• Mounting hardware not included
• Mounting bracket not included
• Direct replacement for select Porsche 924, 944, and 968 applications

Detailed Product Overview

ATE brake boosters are engineered for easy installation and consistent performance. This unit uses a vacuum-assisted design to reduce pedal effort while maintaining reliable braking response. The metal housing and careful workmanship support durability in demanding driving conditions, while the single diaphragm layout keeps the design focused and service-friendly. If you are replacing a worn booster on a Porsche 944 brake booster application or a Porsche 968 vacuum brake booster setup, part number 300083 provides a precise OE-style solution.

This part cross-references PSA401 for the same application.

Vehicle Fitment

• Fits 1992-1995 Porsche 968, N/A
• Fits 1983-1991 Porsche 944, N/A
• Fits 1987-1988 Porsche 924, N/A
• Fits 1981-1982 Porsche 924, N/A
• Fits 1980 Porsche 924, N/A; with Koni Shock Absorbers
• Fits 1979 Porsche 924, N/A

What It Helps Address

• Hard brake pedal feel caused by a failing vacuum booster
• Reduced brake assist during stop-and-go driving
• Inconsistent pedal response under emergency braking
• Vacuum booster wear on aging Porsche 924, 944, and 968 brake systems
• Replacement needs for OE-style brake booster service

Installation Notes and Tips

Verify the housing diameter, diaphragm type, and pedal rod extension before installation. This booster does not include the master cylinder, mounting hardware, or mounting bracket, so reuse or source those components separately as needed. Confirm fitment against the vehicle’s brake system configuration, especially for the 1980 Porsche 924 with Koni Shock Absorbers note.

Quality Assurance

ATE Original parts are built to the same quality standard as original equipment applications, with high-quality materials and precise manufacturing intended to reduce premature wear. Part number 300083 is an OE-style vacuum brake booster for select Porsche models.