Upgrade your vehicle's braking system with the Dorman M630031 Brake Master Cylinder, meticulously designed to fit seamlessly in a variety of models including Blazer, Escalade, Tahoe, Yukon, and Silverado. Crafted from durable aluminum material and featuring a 34 mm bore diameter, this master cylinder ensures reliability and long-lasting performance. This OEM replacement comes with a master cylinder cap, has a 2-port quantity, and is finished in a sleek matte surface. Dorman's commitment to quality is evident with their limited lifetime warranty, assuring that this critical component will meet your vehicle's needs without compromise. Please note, this product's part numbers include M630031, as well as cross-references to 100-2630, 13570, M901215, F131468, and 130.66041, ensuring compatibility and ease of selection for your maintenance or repair project. Exact item is shown. New open box with partial original packaging. Set weight 2.1 lbs. Has 2 outlets, size 1/2-20 IN. 34mm master cylinder bore diameter. Made in China. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties.