This study investigated the influence of orthographic information on the production of allophones in a second language (L2). Two proficiency levels of native Mandarin speakers learned novel Korean words with potential variants of /h/ based on auditory stimuli, and then they were provided various types of spellings for the variants, including the letters for ["h"] and ø. Subsequently, picture-naming and spelling recall tasks were given to the Mandarin-speaking learners. The results showed that Mandarin-speaking learners, after exposure to the spellings, began to produce and lexically store the /h/ variants following the given forms of the spellings of words, which provides support for the impact of spellings in the production and lexical storage of L2 allophones. However, the effect of L2-learning experience was not shown to be strong, which suggests difficulty in the native-like attainment of the production of L2 allophones.