TRW PMH238 Brake Master Cylinder

Reliable Brake Master Cylinder for Saab 900

The TRW PMH238 brake master cylinder is engineered to restore precise brake control for your Saab 900. Designed with durable aluminum construction and a straight bore, this master cylinder ensures consistent hydraulic pressure for safe braking performance.

• Constructed from lightweight, corrosion-resistant aluminum
• Includes dust boot and gasket/seal for protection and leak prevention
• Features a 22.22 mm straight bore diameter for accurate hydraulic response
• Equipped with two mounting holes and two ports for secure installation
• Compatible specifically with Saab 900 models requiring part number PMH238

Technical Details and Features

The TRW PMH238 brake master cylinder is designed without an integrated reservoir or brake booster, making it suitable for vehicles with separate components. It includes two pistons to manage brake fluid pressure effectively and has a primary outlet thread size of M10 - 1.0 and M12 - 1.0, accommodating standard brake line fittings. The included dust boot protects internal components from contaminants, while the gasket or seal helps maintain a secure hydraulic system. This master cylinder does not come with mounting hardware, push rod, bleeder screw, or brake pressure switch, so those components must be sourced separately if needed.

Common Applications and Problem Resolution

• Restores brake pressure in Saab 900 models with worn or leaking master cylinders
• Eliminates spongy or unresponsive brake pedal feel caused by internal seal failure
• Prevents brake fluid leaks that can compromise braking safety
• Addresses inconsistent brake pedal travel due to piston wear or damage
• Replaces corroded or damaged aluminum master cylinders to maintain system integrity

Installation Notes and Tips

When installing the TRW PMH238 brake master cylinder on your Saab 900, ensure the mounting surface is clean and free of debris. Use the two mounting holes to secure the unit firmly, and verify that the gasket or seal is properly seated to prevent leaks. Since mounting hardware and push rod are not included, retain or acquire the correct components for your vehicle. Bleed the brake system thoroughly after installation to remove air and restore optimal brake performance.

Quality Assurance and Warranty

TRW manufactures the PMH238 brake master cylinder to meet strict quality standards, using durable aluminum for long-lasting performance. The included dust boot and gasket help protect the internal components from contamination and fluid leaks. While specific warranty details are not provided, TRW products typically come with manufacturer-backed coverage to ensure reliability and customer satisfaction.