Description HEAVY DUTY AGITATOR DRIVE RETRO KIT by Sunset Works only with the 1 inch hollow shaft agitator assembly Normally In Stock - Call for same day shipping or next business day air service FITS MUELLER, SURGE, AND OTHER TANKS WITH A 3 or 4 POST MOUNT. Includes: 1/3 hp electric motor 56c 35 RPM Motovario gear drive Parts kit for installing on Mueller style 1 inch hollow shaft agitator paddles - by Sunset 3952 Shaft Shield Dust Cover by Mueller Replaces: GEA number 7750-0086-212 and 7750-0128-331 Mueller new part number 8827899 (as of 2019) Mueller old part number 31393 Made in USA and Italy Ships from Hamby Dairy Supply in Maysville Missouri Next Day Air shipping available by PHONE ONLY - Call 816-449-1314 Related Items; M-31393 / 8827899 Agitator Drive assembly M-8801957 Roll Pin for 31393 / 8827899 drive assembly 30-8803710kit - 31393 / 8827899 drive assembly plus a shaft adapter for the light duty agitator paddles M-92835 HD Shaft Shield - 1 inch - with Teflon O-ring M-3952 Standard Shaft Shield - 1 inch - for indoor use only Mueller Agitator Paddle assemblies available - call for availability - some are in stock and some are special order updated July 2026