MTD 951-12771A Lawn & Garden Equipment Engine Carburetor Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; 4P90JUA,4P90JUB,4P90MUA,4P90HU This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including; 951-12771,951-12823 Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Mtd This carburetor (part number 951-12771A) is for lawn and garden equipment engines Wear work gloves to protect your hands and work in a well-ventilated area during this repair