Restoring or maintaining a classic Chevy or GMC truck from the 60s? This brake master cylinder is a direct replacement for many 1960-1966 models, including C10, C20, C30 pickups, Panels, Suburbans, and some GMC series trucks. Check your specific year and model carefully – it fits both manual and power brake systems depending on the application.
It's made from durable cast iron with a 1.125-inch bore and a single rear outlet (7/16-24 thread). Comes with a reservoir attached, ready to bolt on and plumb. This is an aftermarket part that matches OEM numbers like M34403, 18008624, etc.
If your old master is leaking, the pedal feels spongy, or you're doing a full brake system overhaul, this is a critical component. Installation is straightforward if you're familiar with brake lines and bleeding procedures. Always bench-bleed the new cylinder before installing to avoid air bubbles.
A quality, affordable part that keeps your classic stopping safely. Just make sure you get the right one for your truck's configuration (manual vs. power brakes, flat face cowl, etc.). When in doubt, check with a parts expert or your vehicle's manual.
