Yamaha Cover, Water Inlet 1 - 6GR-45214-00-00. Protect Your Yamaha Water Inlet with Durable Covering. The Yamaha Cover, Water Inlet 1 - 6GR-45214-00-00 is designed to offer superior protection for your Yamaha's water inlet. By shielding the water inlet from debris, dust, and harsh environmental elements, this cover ensures optimal performance and longevity of your equipment. It's a must-have accessory to help keep your Yamaha in top condition, no matter where you take it.. Key Features. Top-Qual