Genuine OEM Replacement: This is a direct replacement engine brake cable designed for Toro OEM specifications. The part is fully compatible with Toro models requiring an engine brake cable 21770​ and serves as an exact replacement for part number 140-3948. Specific Model Compatibility: Engineered for Toro models 21442, 21445, and 21770. This cable is specifically work with Toro 21442 drive cable​ systems and provides perfect fitment for these commercial mower models. Restored Safety Function: This engine brake cable ensures proper braking system operation for enhanced operator safety. It maintains reliable engagement and disengagement of the brake system, providing secure operation during use and maintenance procedures. Durable Construction: Manufactured with high-quality materials for long-lasting performance in demanding conditions. The cable features corrosion-resistant components that withstand exposure to outdoor elements, ensuring reliable service life. Easy Installation: Designed for straightforward replacement of worn cables, this direct-fit part requires no modifications. The installation process is simplified for quick service, minimizing equipment downtime while restoring optimal brake system performance.