The Reduction BoHousing 3-1 (CM770) is a genuine Villiers component for the 3:1 reduction drive used on classic small engines. Made from cast aluminium alloy with machined faces, it supports and aligns the reduction gears and bearings, maintains correct clearances, and protects the drive from dirt and impact. Built specifically for the Villiers MK10 and MK12 engine families, it restores proper fit where the original housing is cracked, corroded or distorted. Supplied as unused old stock, it may show light storage tarnish but has not been fitted. This housing is well suited to workshop rebuilds of vintage equipment, helping keep mowers, rotavators, pumps, generators and site plant running reliably.

Key Features:
– Genuine Villiers OEM housing, part no. CM770
– Correct for the 3:1 reduction boused on MK10/MK12 series engines
– Cast aluminium alloy for strength, low weight and corrosion resistance
– Precision-machined faces and bores for accurate shaft and gear alignment
– Direct replacement that accepts original internals and standard fixings
– Restores case rigidity to help reduce vibration and gear noise
– Durable build suited to trade, agricultural and garden machinery use
– Unused old stock; cosmetic ageing does not affect function
– Straightforward to fit using standard workshop tools and methods
– Supports long service life when installed with the correct gaskets and seals

Typical Applications:
Used when refurbishing or repairing Villiers-powered machinery where the reduction drive housing is damaged or worn. Typical equipment includes cement mixers, rotavators/tilers, cylinder and rotary mowers, generators, pumps and light site plant. Ideal for keeping period machines in service while maintaining original specification and performance.

Also known as:
Gear casing, reducer case, reduction drive cover, gearbocase, drive-end cover, final drive housing, speed-reducer case, front cover (reduction unit), reduction drive body.

Fits Models:
C12, MK10, MK10/1, MK101, MK12, MK12/1, MK121, MK15, MK15/2, MK152

Alternate Part Numbers:
CM770

Product Specifications