Optimal oil Systems Function: Ensures proper vacuum transfer between oil pumps and engine systems, maintaining smooth operations, reducing engine strain, and improving overall efficiency Compatibility and Fit: Designed to replace part number 793147, these vacuum Hose ensures fit for 401000, 405000, and 406000 engine series used in lawns tractors and outdoor equipment Multi Pack Convenience: Includes 4pcs vacuum Hose, perfect for replacements, backups, or servicing multiple machines to save time and reduce future maintenance costs Easy Installation and Use: Features precisions molded design for quick installation without modifications, making it ideal for both DIYer users and professional repairs Rubber Construction: Made from rubber that resists heat, oil, and long term wear, cracking, hardening, and deformation over time for good, Manufacturer: SXRQ