A special note to gear purchasers for non-model aircraft purposes. We get many inquirys about asking if these gears will fit a Childs X-G-Wiz-Go toy or will repair a home kitchen device or etc. We are model aircraft experts, if it's a model aircraft gearbox, we can help figure out the part on the phone if your stuck. If it's a toy or special project outside the hobby, I can't begin to guess if our gear will mesh with your gear in your device. I can't tell from a photo what pitch your gear is. If your trying to fix a special item, my best suggestion is to purchase all the gears that look similar and have a go at it. Most gears are a few dollars or less.
Himax Gearbox Driveshaft with E-clip for ACC3966 & ACC3937. Priced per one shaft, e-clip and one plastic spacer. This is a shaft for the Himaxx gearbox that comes with the 2015 and 2025 motors and fits all other 20mm motors. SKU Number: MPIACC3966-5
Himax Threaded Gearbox Driveshaft with E-clip for ACC3936, ACC3937. Priced per one 3mm threaded shaft, nuts, washer, e-clip and two plastic spacers. Use on ACC3937 & ACC3966. SKU Number: MPIACC3937-5
Himax 3966 Gearbox Driveshaft 2mm E-clips. These are very easy to lose when dismantling your gearbox. (for 3mm shaft gearboxs) This listing is priced for 5 individual clips in one pack. SKU Number: MPIACC3966-6
Ball bearing set for ACC3937 (24mm) gearbox and ACC3966 (20mm gearbox) from Himax. Contains 2 each 6x2.5x3mm (OD/Width/ID) flanged bearings. Genuine factory parts. Genuine Japanese bearings. SKU Number: MPIACC3966-4
Himax Gearbox Driveshaft with E-clip for ACC4966. Priced per one shaft, e-clip and one circlip spacer. 38.5mm long. For late model gearbox with 4mm shaft included with many 2015 and 2025 20mm inrunner/gearbox systems. SKU Number: MPIACC4966-5
 "Himax 4.4:1 Gear Set for ACC3966")
 "Himax 5.3:1 Gear Set for ACC3966")
 "Himax 6.6:1 Gear Set for ACC3966")
 "Himax 4.4:1 Spur Gear Only for ACC3966 & ACC3937")
 "Himax 5.3:1 Spur Gear Only for ACC3966 & ACC3937")
 "Himax 6.6:1 Spur Gear Only for ACC3966 & ACC3937")
 "Himax Gearbox Shaft for ACC3966 & ACC3937 Gearbox")
 "Himax Threaded Shaft for ACC3937-5")
 "Himax Spacers for Driveshaft")
 "Himax E-Clips for Shaft")
 "Himax Ball Bearing Set for 3937 & 3966 Gearbox")
 "Himax Gearbox Shaft for ACC4966 Gearbox")
