Oregon 33-099 Ignition Key Lawn Mower Replacement Part Oregon 33-099 Replacement Key Ignition for Delta switches Molded Grip Fits Oregon 33-376 and other plastic Delta switches Replaces MTD 725-1745. Sears 140403. Poulan 140403, 140403MS, 24040, 140401, 532140402, 140402,532140401 & 539107544. Husqvarna 532-14-04-01