Brake Master Cylinder for Massey Ferguson 300 Series Late Models SKU: QT6071R

When your brakes start feeling spongy or you notice green fluid dripping from the master cylinder, this brake master cylinder restores the precise hydraulic pressure your late-model Massey Ferguson 300 series needs for reliable stopping power. Unlike most tractors that use DOT brake fluid, late 300 series MFs use LHM mineral oil because their brake slave cylinders are inside the rear axle housing—if a cylinder leaks, DOT fluid would destroy your transmission.

Why This Cylinder Matters

• Built with seals specifically designed for mineral oil—using the wrong cylinder or fluid will cause immediate seal failure and brake loss
• Two-port configuration for dual brake circuit operation ensures proper brake balance
• Fits serial numbers after V39466 (approximately 1987 and later) with internal slave cylinder design
• Compatible with LHM mineral oil or clean transmission oil—never use DOT brake fluid

Whether you're hauling loaded grain wagons or working steep terrain, this replacement ensures your brakes work when you need them most. S&H Parts has the expertise to help you get the right part for your specific application.