{"product_id":"raybestos-mc390178-brake-master-cylinder","title":"Raybestos MC390178 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Chevrolet, Oldsmobile, Pontiac\u003c\/h2\u003e\u003cp\u003eThe Raybestos Element3; New Brake Master Cylinder MC390178 is engineered to restore precise brake hydraulics for select GM minivans. Designed specifically for Chevrolet Lumina APV, Oldsmobile Silhouette, and Pontiac Trans Sport models, this master cylinder ensures consistent brake fluid pressure and system integrity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable aluminum for corrosion resistance and longevity\u003c\/li\u003e\n\u003cli\u003eFeatures a 24.000 mm bore size for optimal hydraulic performance\u003c\/li\u003e\n\u003cli\u003eIncludes 2 mounting holes with a diameter of 0.433 inches for secure installation\u003c\/li\u003e\n\u003cli\u003eEquipped with 4 ports and M10x1 primary port thread for versatile brake line connections\u003c\/li\u003e\n\u003cli\u003ePart number MC390178 ensures exact fitment for specified GM minivans\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Raybestos Element3; New Product Line\u003c\/h2\u003e\u003cp\u003eThe Element3; New line by Raybestos focuses on delivering reliable brake hydraulics components that meet or exceed OEM specifications. This brake master cylinder is part of that line, offering precise engineering and material quality tailored for GM vehicles like the Chevrolet Lumina APV, Oldsmobile Silhouette, and Pontiac Trans Sport. The use of aluminum material and exact bore sizing reflects the line’s commitment to durability and performance in brake system components.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder MC390178 is designed with a 24.000 mm bore size to provide consistent hydraulic pressure necessary for effective braking. The aluminum construction offers resistance to corrosion and heat, which is critical for maintaining brake system reliability over time. With 2 mounting holes sized at 0.433 inches, installation is secure and aligns with factory specifications. The 4 ports, including a primary port with M10x1 threading, allow for proper brake line connections, ensuring compatibility with the brake hydraulics system of Chevrolet Lumina APV, Oldsmobile Silhouette, and Pontiac Trans Sport models.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake fluid pressure in Chevrolet Lumina APV, Oldsmobile Silhouette, and Pontiac Trans Sport\u003c\/li\u003e\n\u003cli\u003eReplaces worn or leaking master cylinders causing brake pedal sponginess\u003c\/li\u003e\n\u003cli\u003eSolves brake fluid leaks that reduce braking efficiency\u003c\/li\u003e\n\u003cli\u003eAddresses inconsistent brake pedal feel due to internal cylinder wear\u003c\/li\u003e\n\u003cli\u003eEnsures proper hydraulic function after brake system repairs or upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify compatibility with Chevrolet Lumina APV, Oldsmobile Silhouette, or Pontiac Trans Sport before installation\u003c\/li\u003e\n\u003cli\u003eEnsure brake system is fully bled after installation to remove air from hydraulic lines\u003c\/li\u003e\n\u003cli\u003eUse proper torque specifications on the 2 mounting holes to avoid damage\u003c\/li\u003e\n\u003cli\u003eInspect brake lines and fittings for wear or damage during installation\u003c\/li\u003e\n\u003cli\u003eFollow manufacturer guidelines for brake fluid type and maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eRaybestos manufactures the MC390178 brake master cylinder to meet stringent quality standards, ensuring reliable performance in brake hydraulics. The Element3; New product line is designed to meet or exceed OEM specifications for fit, form, and function. Warranty coverage details should be confirmed with the product documentation or authorized distributor.\u003c\/p\u003e","brand":"Raybestos","offers":[{"title":"Default Title","offer_id":44427847270581,"sku":"BDBL-MC390178","price":158.42,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RS_MC390178_Fro.jpg?v=1775018791","url":"https:\/\/www.partcatalog.com\/products\/raybestos-mc390178-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}