labwork Arctic Cat Brake Master Cylinder vs Master Cylinder Brake Kit Fits For Arctic Cat 400 500 650 2X4 4X4 04-05#0437-053

Both are the same rear brake master cylinder for 2004-2005 Arctic Cat 400, 500 and 650 models, built to part number 0437-053, so the fit and function are effectively identical. The real difference is the kit: the labwork kit ships with mounting brackets, bolts, washers, a nut and cable ties, while the other listing is the master cylinder assembly alone. Buy the labwork kit if you want the hardware in the box; buy the single assembly if you already have sound brackets and fasteners. Owners of these ATVs report the cylinder itself is a straightforward wear part, and neither listing carries a meaningful record of long-term durability, so inspect the bore and seals on arrival.

• Choose the labwork kit if you want the mounting brackets, bolts, washers, nut and cable ties included with the cylinder.
• Choose the Arctic Cat-branded assembly if you only need the master cylinder and will reuse your existing brackets and hardware.