The S-35973-L is a premium OEM-spec left-hand air disc brake caliper assembly for Meritor EX225L2 braking systems, designed for heavy-duty truck and trailer applications. Built for durability under high braking loads, this caliper offers reliable performance, corrosion resistance, and smooth operation with proper pneumatic actuation. It is engineered for easy installation and service compatibility with EX225L2 carriers, pads, and hardware.