Schmitt Marine Heavy Duty 2-Speed Wiper Motor - 3.5" Shaft - 12V - 32991

The Schmitt Marine 32991 is a heavy-duty, 2-speed windshield wiper motor designed for offshore marine environments.¹ Featuring a 3.5" long shaft, this motor is ideal for thick bulkheads or cabin walls. It is a reliable choice for larger boats, capable of powering arms and blades up to 24 inches in length.

Powerful & Versatile Performance

Built with a high-torque motor (8.5 ft-lb / 11.5 N.m), the 32991 provides the strength needed to clear heavy spray and rain from large glass surfaces. It offers two speeds (35 or 55 sweeps per minute) and a user-adjustable sweep angle, making it highly adaptable to different windshield shapes and sizes.

Key Features:

• Marine-Grade Materials: Features a 316 stainless steel shaft, a chrome-plated brass shaft housing, and a black powder-coated aluminum motor housing for superior heat dissipation and corrosion resistance.

• Adjustable Sweep Angles: Can be easily configured for 45°, 60°, 80°, or 110° sweeps to match your specific field of vision requirements.

• Self-Parking: Includes an adjustable parking position (Left or Right), ensuring the wiper arm clears the view when turned off.

• High Torque Capacity: Robust enough to power up to a 24" arm and 22" blade combination.

• Insulated Grounding: Suitable for use on steel, aluminum, wood, or fiberglass (GRP) hulls without risk of electrolytic corrosion.

• 3-Year Warranty: Backed by Schmitt Marine’s guaranteed durability for heavy-duty use.

Technical Specifications:

• Model Number: 32991

• Voltage: 12V DC

• Shaft Length: 3.5" (89mm)

• Shaft Diameter: 5/8" (16mm)

• Torque: 11.5 N.m (8.5 ft.lb)

• Speed: 2-Speed (Low: 35 sweeps/min | High: 55 sweeps/min)

• Fuse Requirement: 5 Amp fuse recommended

Applications:

• Marine signal horn for boats and yachts

• Freshwater and saltwater vessels

• Fog, crowded channels, and low-visibility signaling

• Replacement or upgrade horn installation

Installation Pro-Tip:

Before finalizing your installation, dry-fit the motor and test the sweep angle and park position. Adjusting these settings is much easier before the motor is fully mounted in a tight space behind the dashboard. To change the sweep angle, you simply move the internal drive pin to the corresponding hole on the drive gear (labeled for each degree).