Aluminium Brake Master Cylinder 1 in. Bore for Honda CR-V 2.4L 05-06 46100S9AA61. M630426, 46100S9AA62, 46100S9AA61. - Master Cylinder Material: Aluminium. - Type: Brake Master Cylinder. -Easy to install and maintain, this brake master cylinder is a cost-effective solution for replacing worn-out or malfunctioning parts in your vehicle's braking system.