Rotary 3538 Tank Mounting Gasket For B&S by Rotary $5.61 Sold out 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out PRODUCT INFORMATION Type Gasket PRODUCT DESCRIPTION DESCRIPTION Fits B&S Models: 100900, 130900. 4 & 5 HP Vertical Engines. REPLACES OEM B&S 270073