{"product_id":"dorman-m630638-brake-master-cylinder","title":"Dorman M630638 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Chevrolet Aveo and Pontiac G3\u003c\/h2\u003e\u003cp\u003eThe Dorman M630638 brake master cylinder is engineered to restore proper brake hydraulics in select Chevrolet and Pontiac models. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent brake performance for your Aveo, Aveo5, G3, or G3 Wave.\u003c\/p\u003e\u003ch2\u003eKey Features of the Dorman M630638 Brake Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 0.875 inches for accurate hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum material for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for fluid storage and sensor for brake system monitoring\u003c\/li\u003e\n\u003cli\u003eTwo outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0\u003c\/li\u003e\n\u003cli\u003eSecondary outlet thread diameter of 10 mm\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder only; mounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M630638 brake master cylinder is designed specifically for Chevrolet Aveo, Aveo5, Pontiac G3, and G3 Wave models, providing a direct replacement for the original component. Its aluminum construction offers enhanced durability and resistance to wear and corrosion, which is critical for maintaining brake system integrity. The included reservoir allows for proper brake fluid containment, while the integrated sensor supports vehicle brake system diagnostics. With a bore diameter of 0.875 inches and dual outlets, this master cylinder ensures reliable hydraulic pressure distribution to the brake calipers or wheel cylinders.\u003c\/p\u003e\u003ch2\u003eCommon Brake Issues Addressed by This Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpongy or unresponsive brake pedal feel\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from the master cylinder or reservoir\u003c\/li\u003e\n\u003cli\u003eBrake warning light activation due to sensor failure\u003c\/li\u003e\n\u003cli\u003eReduced braking efficiency or uneven brake pressure\u003c\/li\u003e\n\u003cli\u003eContaminated or degraded brake fluid affecting system performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with Chevrolet Aveo, Aveo5, Pontiac G3, and G3 Wave before installation\u003c\/li\u003e\n\u003cli\u003eBleed the brake system thoroughly after installation to remove air pockets\u003c\/li\u003e\n\u003cli\u003eUse appropriate brake fluid as specified by the vehicle manufacturer\u003c\/li\u003e\n\u003cli\u003eCheck sensor connections for proper fit and function\u003c\/li\u003e\n\u003cli\u003eMounting hardware is not included; reuse existing hardware or source separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M630638 brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term reliability. While mounting hardware is not included, the product undergoes rigorous quality control to ensure consistent performance. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792335306933,"sku":"BKKX-M630638","price":121.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M630638_Generic.jpg?v=1774997724","url":"https:\/\/www.partcatalog.com\/products\/dorman-m630638-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}