Specification Brand : The ROP Shop BulletPoint1 : The ROP Shop | Electric PTO Clutch for Ariens 4387900, 04387900, Gravely 4387900, 04387900 Lawn BulletPoint2 : Specs - Inner Diameter: 1". Pulley Diameter: 6". Belt Width: 1/2" or 5/8". Rotation Direction: Counter Clockwise. Refer to images 2 & 3 for more information BulletPoint3 : Includes - (1) Electric PTO Clutch, (1) Billet Machined Pulley & (1) Wire Harness; comes as shown in the first image BulletPoint4 : Clutch contains a preinstalled keyway; however, modification of your existing keyway may also be required for successful installation. Some models may require a pigtail extension BulletPoint5 : Please be sure to check your part or model number to ensure this is the correct electric clutch for your unit. Also, please note this may replace multiple part numbers BulletPoint6 : Visit the Largest Selection of Powersports & Mowers Aftermarket Parts Online on the Caltric Amazon store - www.amazon.com/caltric Color : Black ConnectivityProtocol : X-10 CurrentRating : 10 amps ExteriorFinish : Polished ExternallyAssignedProductIdentifier : 4893579964516 ExternallyAssignedProductIdentifier1 : 197111459145 ExternallyAssignedProductIdentifier2 : 0197111459145 ExternallyAssignedProductIdentifier3 : 00197111459145 FitType : Vehicle Specific IncludedComponents : 1x PTO Clutch InternationalProtectionRating : IP53 ItemName : The ROP Shop | Electric PTO Clutch for Ariens 4387900, 04387900, Gravely 4387900, 04387900 Lawn ItemPackageDimensions_Height : 21.8948 centimeters ItemPackageDimensions_Length : 12.5984 centimeters ItemPackageDimensions_Width : 20.9042 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : lawn-mower-electric-clutches Manufacturer : The ROP Shop ModelName : 0399-MT-91704376A-31 ModelNumber : 101745_1 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : 101745_1 PowerSourceType : Mechanical ProductDescription : The ROP Shop | Electric PTO Clutch for Ariens 4387900, 04387900, Gravely 4387900, 04387900 Lawn. Please review all product information to ensure that this product is compatible with your unit. Our staff constantly strives to provide clear and concise product information. We understand that sometimes it can be difficult to confirm product compatibility. It is your responsibility to confirm this is the correct product you need; therefore, we encourage all customers to fully review the information provided in this listing prior to purchase. Nothing is worse than having to return a product, trust us...we get it. Let's work together to avoid this! If you are unsure as to whether or not this is the correct product for your unit, please ask. If you seek assistance we will need as much of the following information as possible, if applicable, to help you find the product you are looking for: ▪ Model and/or Sub-model ▪ Spec and/or Type Number ▪ Code and/or Serial Number ▪ Year ▪ Engine Horsepower. Our knowledgeable product specialists are always willing to help you verify product fitment. Stay rugged, my friend. ProductSiteLaunchDate : 2017-10-12T18:25:01.090Z SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 56101600 WarrantyDescription : 90 Days