Polaris 1912408 Rear Left Brake Caliper Pad Kit

This rear left brake caliper kit corresponds to Polaris OEM part number 1912408, superseding 1911458 and 2203628. The assembly features a dual-piston configuration with 1.5-inch (38.1 mm) and 1-inch (25.4 mm) bore diameters, designated as a dual-input caliper (DIC) for rear mounting. The kit includes the caliper body, semi-metallic brake pads, and mounting bracket, fully assembled for direct installation. Engineered to Polaris OEM specifications for hydraulic brake systems on select Sportsman and Scrambler ATV platforms. Constructed from high-strength aluminum alloy housing with corrosion-resistant surface treatment. Compatible with DOT 4 brake fluid. Cross-reference interchange includes aftermarket manufacturer numbers NICHE 519-CCL2246P (caliper), 519-KPA2224D (pad set), and kit MK1001120. Verified fitment spans model years 2009 through 2023 across 400, 450, 500, 550, 570, 800, 850, and 1000 displacement variants. No engine-specific calibration required; fitment is determined by chassis and brake system configuration.