Specification Brand : QNHEAY BulletPoint1 : Compatible Models: Air fuel filter fit for Echo chainsaw CS390 CS501 491S 390SX 501SX BulletPoint2 : Replacement Part Number: Air filter kit replace 90174Y A226001090 BulletPoint3 : High Quality Material Craftsmanship: Air fuel filter is made of high-quality materials with exquisite craftsmanship. This ensures the durability and reliability of the retrofit kit, while providing more sufficient fuel combustion, preventing oil leaks, and maintaining smooth engine operation BulletPoint4 : Excellent Filtration Effect: Air fuel filter provides excellent filtration effect, which can capture up to 90% of air suspended particles, ensuring that the engine obtains cleaner air, improving performance and combustion efficiency BulletPoint5 : Packaging includes:1 x air filter 1 x fuel filter 1 x spark plug. Our products have undergone comprehensive testing to ensure reliable quality. Long service life, stable performance, can save you time and money. If you have any questions, please feel free to contact our customer service BulletPoint6 : [LEAK-PROOF SEALING DESIGN]: The echo cs-370 air filter uses a leak-proof polyurethane resin frame design, seamlessly fitting to prevent unfiltered air from entering the engine. BulletPoint7 : [EASY TO INSTALL]: Effortlessly Slip the echo cs370 air filter into place—a seamless DIY replacement that no tools needed. BulletPoint8 : [DIMENSIONS FITS FOR ECHO CHAINSAW AIR FILTER CS400]: Outside Diameter:2-1/2", Inside Diameter:1-3/4", Overall Height:1-3/16". BulletPoint9 : [PACKAGE INCLUDE]: HIPA 13030039730 air filter x2. ChainType : Low Kickback Color : 90174Y CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier : 6972014030516 ExternallyAssignedProductIdentifier1 : 764560332727 ExternallyAssignedProductIdentifier2 : 0764560332727 ExternallyAssignedProductIdentifier3 : 00885911602747 FitType : Vehicle Specific Fit IncludedComponents : (1) CMZCSC6 6-In. Chain ItemLength : 6 inches ItemName : QNHEAY Air Filter Fit for Echo Chainsaw CS390 CS501 491S 390SX 501SX, Tune Up Kit Air Fuel Filter Replace 90174Y A226001090 ItemPackageDimensions_Height : 11.6078 centimeters ItemPackageDimensions_Length : 5.1054 centimeters ItemPackageDimensions_Width : 9.398 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : chain-saw-replacement-parts ItemTypeName : 6" CHAINSAW REPLACEMENT CHAIN Manufacturer : ESUparst Material : German Steel Material1 : Polyurethane Material2 : Resin ModelName : CMZCSC6 ModelNumber : CMZCSC6 NumberOfItems : 3 PackageLevel : unit PartNumber : AFE230518 ProductDescription : 1 ProductDescription1 : 6 Inch Mini Chainsaw Chain Replacement: Designed for safety, performance and quality. ProductDescription2 : 2 Pieces: Come with 2 pieces mini chainsaw chains to meet your daily use needs, ideal for saving money and time. ProductDescription3 : Efficient and Durable: Deep quenched and hardened 6-inch chains have high wear resistance, durability and high hardness, not easy to break, cut smooth and fast with minimum kickback. ProductDescription4 : Easy to Replace: Use a nut driver to open the side cover, replace the original chain with one of our chains, install the side cover and tighten the nut, then use a screwdriver to turn the screw to adjust the tightness of the chain. NOTE: Please pay attention to the direction of cutter teeth. ProductDescription5 : Convenient:You can replace blunt or broken chains at any time, so that you can continue to work, saving your time and unnecessary trouble. ProductGrade : Replacement Part ProductSiteLaunchDate : 2023-06-08T07:00:00.000Z Size : 6 inches SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 3