Lewmar 13.5 Inch Powerboat Steering Wheel with PowerGrip Control Knob, 5/8 Inch Nut, 316 Stainless Steel

The Lewmar 89700820 is a 13.5 inch powerboat steering wheel built from 316 stainless steel with a mirror polished finish. It is a three-spoke wheel designed for a universal fit on boats using a standard 3/4 inch tapered steering shaft, and it comes fitted with a 5/8 inch hub nut, the thread size most commonly used on newer Sea Star and other hydraulic steering helms. A ball bearing PowerGrip control knob is included, letting the helmsman spin the wheel quickly through tight turns and maneuvers with one hand while retaining full control at speed. The center hub assembly includes a Delrin washer and center hub nut along with the control knob, so the wheel arrives ready to mount without needing to source additional hardware.

316 stainless steel construction resists corrosion in saltwater and marine environments better than standard 304 stainless, making this wheel suited to offshore and coastal powerboats. The polished finish matches common helm station hardware and provides a durable, easy-to-clean surface. Because hub nut thread size varies by helm manufacturer and age, confirm your boat uses a 5/8 inch threaded shaft before ordering; the same wheel is also offered with 1/2 inch and M12 nut options for other helm types.

Specifications

• Brand: Lewmar
• Manufacturer Part Number: 89700820
• Material: 316 Stainless Steel
• Finish: Mirror Polished Stainless Steel
• Wheel Diameter: 13.5 inches
• Number of Spokes: 3
• Shaft Fit: 3/4 inch tapered shaft
• Hub Nut Thread Size: 5/8 inch
• Control Knob: Ball bearing PowerGrip control knob included
• Included Components: Ball bearing PowerGrip control knob, center Delrin washer, center hub nut
• Weight: 4.45625 pounds
• Warranty: 3 year manufacturer warranty

Frequently Asked Questions

What size steering shaft does the Lewmar 89700820 fit? This wheel fits a standard 3/4 inch tapered steering shaft, the most common tapered shaft size used on powerboat helms.

What hub nut thread size comes with this wheel? The Lewmar 89700820 comes with a 5/8 inch hub nut, which is the thread size typically used on newer Sea Star and other hydraulic steering helms.

Will this wheel work with an older Teleflex mechanical helm? Older Teleflex and other mechanical helms typically use a 1/2 inch hub nut thread, not the 5/8 inch nut included with the Lewmar 89700820, so a 1/2 inch nut version would be the correct choice for that helm type.

What is the diameter of this steering wheel? The Lewmar 89700820 measures 13.5 inches in diameter.

What material is the wheel made from? It is made from 316 stainless steel with a mirror polished finish, a grade chosen for its resistance to corrosion in saltwater and marine environments.

Does the control knob come installed or need to be purchased separately? A ball bearing PowerGrip control knob is included with the Lewmar 89700820, along with a center Delrin washer and center hub nut.

How many spokes does this steering wheel have? The Lewmar 89700820 is a three-spoke wheel.

How much does this steering wheel weigh? The Lewmar 89700820 weighs 4.45625 pounds.

Is this steering wheel compatible with M12 metric shafts? The Lewmar 89700820 uses a 5/8 inch nut; a version with an M12 nut is offered separately for boats with metric steering hardware, commonly found on Flex and other metric-thread helm systems.

What is included in the box with this wheel? The Lewmar 89700820 ships with the steering wheel, a ball bearing PowerGrip control knob, a center Delrin washer, and a center hub nut.

What warranty comes with this steering wheel? Lewmar backs the 89700820 steering wheel with a 3 year manufacturer warranty.