Specification Brand : Lawn Mower Parts BulletPoint1 : Air Filter Cover & Knob BulletPoint2 : Part number: SRM-260 / SRM-261 / PAS-260; BulletPoint3 : For: Echo; BulletPoint4 : Fits: SRM-310; BulletPoint5 : Let us know if you have any questions about this item or model. We are here to help! After receiving the item we will send you an ebook "Guide to Lawn Care" (free), the file (PDF) will be attached to the letter below. Color : Black ExternallyAssignedProductIdentifier1 : 0736952469410 ExternallyAssignedProductIdentifier2 : 736952469410 FitType : Vehicle Specific Fit IncludedComponents : washing machine hose ItemName : Lawn Mower Parts SRM-260 / SRM-261 / PAS-260 Air Filter Cover & Knob for Echo Fits SRM-310 and E-Book in A Gift ItemPackageDimensions_Height : 12 centimeters ItemPackageDimensions_Length : 26 centimeters ItemPackageDimensions_Width : 26 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : string-trimmer-replacement-parts Manufacturer : Lawn Mower Parts Material : Polyethylene Material1 : Plastic Material2 : Rubber ModelNumber : Q54S74903B NumberOfItems : 1 PartNumber : Q54S74903B ProductDescription : Air Filter Cover & Knob Part number: SRM-260 / SRM-261 / PAS-260; For: Echo; Fits: SRM-310; Echo air filter cover part number 13031357732 (replaces part number 13031357731) and knob part number 13040652131. Fits: