Right Hand Brake Slave Cylinder for Massey Ferguson 300 Series Late Models SKU: QT6195R

When brake slave cylinders fail in late Massey Ferguson 300 series tractors, the problem goes beyond just poor braking—the cylinders are mounted inside the rear axle housing, so brake fluid leaks directly into your transmission oil. Using standard DOT brake fluid makes it worse, as DOT fluid will destroy your transmission. This right-hand brake slave cylinder is specifically engineered for the unique LHM mineral oil system these tractors require.

Why This Slave Cylinder Matters

• Built with seals specifically designed for mineral oil to prevent immediate seal failure
• Matches the internal slave cylinder design used in late 300 series models (serial numbers after V39466, approximately 1987 and later)
• Right-hand specific design ensures proper brake balance and pedal response
• Prevents costly transmission damage that occurs when brake fluid contaminates transmission oil

Remember to use only LHM mineral oil or clean transmission oil—never DOT brake fluid. Many farmers successfully use 10W-30 transmission oil as an alternative to expensive LHM fluid. If you need fitment confirmation for your specific 300 series model, our parts team has been helping farmers get the right brake components since 1969.