Brake Master Cylinder for 2005-2009 Buick LaCrosse & More - Dorman M390401

Turn pedal effort into hydraulic brake pressure with the Dorman First Stop Brake Master Cylinder M390401, a new aluminum unit engineered to match the design, function and performance of the original master cylinder. It fits many vehicles, among them the 2000-2005 Chevrolet Impala, 2005-2009 Buick LaCrosse and 2005-2009 Buick Allure, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.

• Precise replacement: the aluminum cylinder housing is built to match the original part's material and is intended to deliver similar performance.
• Durable design: every rubber component uses a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new: made entirely from new materials, with quality and safety in mind.
• Strict specifications: made to meet rigorous SAE International standards.

Specifications: 1 in bore diameter and two outlets. The secondary and rearward outlet threads are M12 x 1.0, and the primary outlet thread pitch is 1 mm. The reservoir and a sensor are included. Mounting hardware is not included. Country of origin: China.

The master cylinder converts force from the brake pedal into hydraulic pressure and sends it through the brake lines. Signs it may need replacing include a soft or sinking brake pedal, brake fluid leaking around the unit, or a brake warning light. Diagnose the cause first, because other brake components can produce the same symptoms. Follow the vehicle service information for mounting fasteners and bleeding procedures.

Interchange: 174-783 · 783-36111 · 83-36111 · 100-2313 · M-82111 · 13-3183 · 10-3183 · 130.62111 · 131.62111 · 355-47083
174783 · 78336111 · 8336111 · 1002313 · M82111 · 133183 · 103183 · 13062111 · 13162111 · 35547083 · 18M819 · M901054 · 13337 · MC252090 · 18026277 · 18039288 · 18060780 · M2714 · NM2714A · MC390401 · F134488 · MC134488