Upgrade your braking power with this brand new 9-inch dual diaphragm power brake booster from MBM Brakes. It's finished in black and features a 3-3/8-inch GM bolt pattern, making it a universal fit for many custom or performance builds—especially popular in hot rods, classics, or upgraded trucks. The dual diaphragm design provides more assist than single versions, so you get better pedal feel and stopping power. It comes with a 1-year manufacturer warranty for peace of mind. Made in China but built to quality specs. Installation is straightforward if you're familiar with brake systems. Perfect when your old booster is tired or you're doing a full brake system upgrade. Get ready for smoother, stronger stops!