Yanmar The N21 marine diesel engine series is widely used in ships, offshore vessels, and industrial marine applications for reliable propulsion and auxiliary power generation systems. Variants including 6N21AL, 6N21AL-DV, 8N21AL, and 8N21AL-DV are known for fuel efficiency, compact construction, and dependable operational performance in demanding marine environments. Enginex Marine supplies premium quality spare parts and machinery components suitable for all N21 engine variants worldwide.