This study examines the determinants of employee enthusiasm and its influence on organizational loyalty at Turbo Energy Pvt. Ltd., a leading automotive component manufacturing firm in India. Using a descriptive research design, data were collected from 618 employees across departments through a structured questionnaire. The study evaluates key human resource factors including reward and recognition, training and development, compensation, empowerment, and leadership support. Quantitative techniques such as percentage analysis, chi-square tests, and regression analysis were employed to analyze the data. The findings reveal that leadership support, fair compensation, and structured training programs significantly enhance employee enthusiasm. Furthermore, a strong positive relationship was identified between employee enthusiasm and organizational loyalty. The study provides empirical evidence from the Indian manufacturing sector and offers practical insights for HR practitioners to strengthen employee engagement, retention, and long-term organizational commitment.