40 Pa. Stat. § 480
It is unlawful for any person, corporation, company or association to do business, within this Commonwealth, as an individual or as a corporation, or protective or cooperative company or association, incorporated, organized or formed for the purpose of soliciting and for accepting premiums or dues and selling to purchasers policies or contracts guaranteeing to owners of automobiles, motorcycles or trucks the services of attorneys in event of damage to persons or property arising out of the operation of automobiles, motorcycles or trucks, or providing for the towing of any damaged automobile, motorcycle or truck, or to hold himself or itself out or to represent himself or itself to the public as being engaged in insurance business or as being an insurance company, insurance association, person, company or association authorized to engage in any kind of insurance business, or to do the kind of business usually transacted by insurance companies, insurance associations and insurance exchanges, although transacted under some other name or description unless such person, company or association is legally incorporated or organized and doing business under the laws of this Commonwealth as an insurance company, insurance association or insurance exchange, and is duly registered and licensed to do business by the Insurance Department.
40 P.S. § 480