Firestone Tire & Rubber Co. S7426-7 (Mar. 1939) Get a print! $8.00 Add to Cart Product Information: Model:S7426-7 (Mar. 1939) Manufacturer:Firestone Tire & Rubber Co. (Air Chief) Schematic Pages Page 1 Please note: we carry a wide range of products which will fulfill the specifications above. Please use our search function or browse our products to find what you need!