The Digital Steering Series features an advanced digital steering module that is fully sealed in epoxy, to protect against moisture. With the flexibility to be operated from anywhere in the boat and torque- free heel / toe functionality, the DS Series defines responsiveness and ease-of-use. And with Digital Guardian in the lower unit, the DS Series offers out-standing durability and performance in a superior motor. Stainless Steel Shaft. 21 Gator Spring Mount.