Yamaha Apron 1 - 6E5-42741-00-4D. Durable and Practical Yamaha Apron for Enhanced Protection. The Yamaha Apron 1 - 6E5-42741-00-4D offers exceptional protection for your Yamaha engine and surrounding components. Designed for high performance and ease of use, this apron provides a reliable shield from debris, water splashes, and environmental elements, ensuring your engine stays protected during maintenance or harsh conditions. Crafted from durable materials, it's ideal for use with Yamaha boats