HIFROM(TM) Replace Air Filter + Pre Filter Fit for BR320 STIHL TS410 TS420 Lawn Mower Replace 4238-140-1800 4238 140 4401 42381410300B Wholesale & Retail Replace: 4238-140-1800 Fit for BR320 STIHL TS410 TS420 Material: PU This is the Non original aftermarket part, please check the picture before buy it. HIFROM focus on provide high quality air filters at fair price: Professional BIG Factory, if you unsatisfy with our product, you can return to our USA warehouse, no risk.