Bzcovac MJ-1-DP Manual Jack Plate for Outboards — 4" Setback, 3" Lift Cast Aluminum with Laminated Wood Mounting Block

The Bzcovac MJ-1-DP is a manual 4-inch setback, 3-inch lift jack plate that repositions small outboard motors (6–35 HP) to improve propeller flow, reduce cavitation, and boost acceleration and top speed.

Many small-boat owners lose speed and control because the outboard sits too low or too close to the transom. The MJ-1-DP gives you straightforward, mechanical height and setback adjustment so you can place the engine where it performs best. Built from cast aluminum with a weather-resistant laminated wooden mounting block, this jack plate is aimed at jon boats, skiffs, aluminum hulls and inflatables that need better shallow-water handling and cleaner propeller flow.

How will moving the motor back and up help my boat’s performance?

Raising the lower unit and moving the engine away from the transom improves water flow around the propeller and reduces suction and cavitation. That change translates to more efficient thrust, quicker planing, and a noticeable difference in acceleration and top-end speed.

• 4-inch setback shifts the propeller away from transom turbulence for cleaner flow.
• 3-inch lift reduces drag and minimizes propeller ventilation in shallow water.
• Optimized propeller angle can reduce fuel consumption at cruising speed.

Will this jack plate fit my engine and boat?

The MJ-1-DP is engineered for small outboards rated between 6 and 35 horsepower and fits typical transom layouts found on shallow-water craft. It’s especially suitable for flat-bottom jon boats, skiffs, and aluminum hulls where engine placement dramatically affects handling.

• Compatible with most 6–35 HP outboards—check motor bracket measurements to confirm fit.
• Works well on jon boats, shallow-water skiffs, aluminum boats, and inflatables.
• Manual transom jack plate design requires standard drilling and bolting to install.

What are the construction and corrosion-resistance details?

The primary plate is cast aluminum for a high strength-to-weight ratio and better resistance to marine corrosion than many steels. The included mounting block is laminated wood designed to resist warping from moisture while helping absorb engine vibration.

• Cast aluminum body offers durable structural support with reduced corrosion risk.
• Laminated wooden mounting block minimizes moisture-induced distortion and absorbs shock.
• Use stainless bolts and appropriate sealant for long-term, water-tight fastening.

How do I install the MJ-1-DP for reliable, leak-free performance?

Installation is straightforward but precise positioning and sealing are key to durability. Clamp the jack plate in the correct location, mark and drill using the pre-marked holes, then fasten with stainless hardware and seal all penetrations to protect the transom.

• Clamp the plate in place to verify alignment before drilling.
• Drill through pre-marked mounting points and use large fender washers inside the transom.
• Apply marine-grade sealant in drilled holes and tighten stainless bolts to spec.

Who is this for? The Bzcovac MJ-1-DP is aimed at anglers, recreational boaters, and owners of small shallow-draft boats who want a cost-effective, mechanical way to improve acceleration, top speed, and handling without modifying the motor. If you operate a 6–35 HP outboard on a jon boat, skiff, aluminum hull, or inflatable and you need better shallow-water performance and cleaner propeller flow, this jack plate provides a durable, easy-to-install solution backed by a 1-year warranty and a 30-day return window.