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Grey wheel drive unit for sailboat autopilot, compact cylindrical form, weather-resistant finish

Raymarine

Raymarine ST4000MK2 Wheel Drive Unit E12093

SKU CH-FEM5-5A9HP

A wheel-mounted autopilot drive for yachts up to 18,700 lbs, SeaTalk compatible and fully weather-resistant

  • Color familyBlack
  • Product colorGrey
  • Automatic steering for yachts up to 18,700 lbs displacement
  • SeaTalk compatibility links with existing Raymarine instruments
  • Fully weather-resistant construction handles cockpit exposure
  • Simple wheel-mount installation requires no structural changes
  • Wheel drive unit only — add control head to complete system

Product Identity

The Raymarine ST4000MK2 Wheel Drive Unit E12093 is a grey, wheel-mounted cockpit autopilot drive for sailboats. It is SeaTalk compatible and designed for yachts up to 18,700 lbs (8,500 kg) displacement. The unit is fully weather-resistant and built for straightforward installation. It is supplied as the drive unit only, not a complete autopilot system.

Who This Suits

Sailboat owners needing a wheel-drive autopilot for vessels within the stated displacement limit. It suits those with existing SeaTalk instrumentation who want to add automated steering. Buyers requiring a complete, ready-to-use autopilot package including a control head and compass should look elsewhere, as this package contains the drive unit only.

Deciding Specification

The maximum vessel displacement of 18,700 lbs (8,500 kg) is the single figure that determines fit. Confirm your yacht's fully loaded weight against this limit before purchase; exceeding it will prevent reliable operation. This drive unit carries part number E12093 for order verification.

How it compares

Measured against everything we stock in Fishing Tools & Gadgets, at today’s prices. Recalculated every night.

Price $674.99
Pricier than about 99% of the 152 comparable items (median $24.99).

Specifications

Product
Brand nameRayMarine
Product colorGrey
Color familyBlack

Questions about this item

Is the ST4000MK2 wheel drive suitable for my 18,700 lb yacht?

Yes, the unit is rated for yachts up to 18,700 lbs (8,500 kg) displacement, so it matches the upper limit of your vessel.

Does the wheel drive steer the boat automatically once fitted?

The ST4000MK2 wheel drive provides the mechanical steering force; it requires a compatible autopilot course computer and control head to steer to a heading automatically.

Can I connect this drive to my existing SeaTalk network?

The drive is SeaTalk compatible, allowing it to communicate with Raymarine autopilot course computers and instruments on the same bus.

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