This study investigates the simplifications used with English consonant clusters by EFL learners of Saudi Najdi Arabic dialect (a dialect spoken in the central region of Saudi Arabia). More particularly, it focused on the Saudi Najdi speakers when they pronounce English final three-consonant clusters such as /lps/ as in "helps." The participants were 20, and they were divided into two groups: ten females and ten males. The data were 51 English words, and the subjects had to do two tasks: word reading-list and sentence reading-list. The results revealed that the subjects modified the consonant clusters by three simplifications. The first simplification was vowel insertion, where the subjects insert a vowel to break up the coda clusters. Second, deletion in which one of the consonants in the coda clusters was deleted. Finally, the last simplification was substitution, where the subjects replaced a consonant with another consonant. In addition, the results revealed that their productions were influenced by their first language's phonetics and phonology system, the written form (orthography) of the L2, and the markedness of the coda clusters. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]