- Direct replacement part that replaces Hayter MY91179 and Murray parts 091179MA, 421409, 421409MA, 91179, 91179MA. - Compatibility: fits Murray lawn tractors from 1987 to 1993 with a 38-inch deck. - Design purpose: specifically designed to fit Murray models within the specified time frame, ensuring proper mounting and operation. - Fit and reliability: provides a proper fit for the listed Murray lawn tractors and serves as a reliable replacement option for the mentioned Hayter and Murray parts. - Key benefits: restores correct compatibility with OEM equipment, helps maintain mower performance, simplifies procurement with a single replacement for multiple part numbers, and minimizes downtime when replacing worn parts. - Use scenarios: 1) Replacing a worn or discontinued part on a Murray tractor built between 1987 and 1993 with a 38-inch deck to restore normal mowing function. 2) Updating a Hayter MY91179 or Murray 91179MA related component using a single compatible replacement that covers all listed part numbers. 3) Servicing a small fleet or personal collection of late 1980s Murray models with 38-inch decks, using this replacement to standardize spares and ensure consistent fit. - Notes: maintains compatibility with the specified Hayter and Murray parts while aligning with the original model range and deck size.