Kobelt 7012 Variable Displacement 4.0-12.0 Hydraulic Marine Helm Pump

All 7012 models share the same internal pump. Displacement is adjustable from about 4 to 12 in³ per turn. Higher output (closer to 12 in³) gives fewer turns lock to lock and a heavier wheel, lower output (closer to 4 in³) gives more turns and a lighter wheel.

The 7012 has an external adjustment screw on the front face of the helm. Turning the screw to increase output reduces the number of turns lock to lock and makes the wheel heavier. Turning it the other way decreases output, adds turns, and makes the wheel lighter. We can help you calculate a good starting point based on your cylinder volume and rudder size.

Short shaft (AN / BN variants) are usually preferred for through console and shallow dash installations, where the wheel mounts close to the panel. Long shaft (AL / BL variants) are often used on thicker consoles, pedestal mounts, or where spacers and trim rings are used. The hydraulic performance is the same, only the shaft length changes.

Models with P in the suffix (such as 7012-ALP or 7012-BNP) include a porting block that relocates and groups the hose connections. This can make piping cleaner and easier, especially on busy consoles or multi station systems. Some porting block models are supplied without the internal lock valve when an external valve manifold is used.

Models with V in the suffix (such as 7012-ALV or 7012-BNPV) include a vent plug at the helm. This helps with bleeding air from the system at the pump itself, which can be very helpful on complex or tall piping layouts where air tends to collect at the helm.

In many cases, yes. The 7012 is often used as a replacement for legacy inboard helms like the SeaStar Capilano HH0426 when paired with appropriate adapter plates and wheel hubs. You will need to confirm cylinder volume, rudder torque, mounting style, and wheel shaft size. If you are replacing a specific helm, contact us with photos and measurements so we can confirm the best 7012 variant and any adapter hardware required.

Yes. The integrated lock valve (on most models) and Kobelt steering manifolds allow the 7012 to be used in single or multiple helm station systems. Correct piping, check valves, and headers are critical for safe operation. Share your layout and we can help review the plumbing concept.

Use a high quality hydraulic steering or light hydraulic oil that meets Kobelt and cylinder manufacturer recommendations, often in the ISO 15 to ISO 22 range. Do not mix different fluid types. If you switch fluid type, the system should be drained and flushed thoroughly first.

Most autopilot pumps tie into the hydraulic circuit rather than the helm itself, so many existing autopilots can remain in place when upgrading to a 7012. We recommend confirming system pressure, cylinder volume, and plumbing layout and checking the autopilot manufacturer’s guidance. We can help review photos and diagrams if you are unsure.