T-H Marine ATLAS 6" Set Back Hydraulic Jack Plate Polished

The T-H Marine ATLAS 6" Hydraulic Jack Plate is the plate most boat manufacturers spec from the factory and most performance bass and bay boat owners upgrade to when they're not running an ATLAS already. It's a 6-inch setback, hydraulic-lift jack plate that bolts between your transom and your outboard, giving you 5.75 inches of pump-driven height adjustment plus the additional vertical mounting flexibility for 7 inches of total range. Polished aluminum finish, self-contained hydraulic pump (no transom-mounted reservoir or hydraulic lines to plumb), and the kind of US-made build quality that's earned ATLAS the #1 sales position in the segment.

What a jack plate actually does for your boat. It moves your outboard up and down at the touch of a switch from the helm. Lower the engine for hole shot and slow-speed maneuvering when you need maximum prop bite. Raise the engine on plane to lift the prop out of the deeper water column and reduce drag for higher top speed. On a tournament bass boat, the right jack plate setting can pick up 2 to 4 mph of top end with the same engine. On a bay boat running shallow flats, it lets you cross a sandbar at idle without grinding the lower unit.

The 6-inch setback model is the most popular ATLAS configuration. Setback distance moves the engine 6 inches further back from the transom, which on most hulls translates to a meaningful improvement in handling, top speed, and water flow to the prop. Some boats specifically need this setback to accommodate their hull design or to clear obstructions on the transom. Other setback options are available (4, 8, 10, 12, 14 inch) for installs that need more or less.

The horsepower rating is 300 HP and 625 lb dry weight. That covers nearly every modern recreational outboard up through the typical 300 HP V8s on bass and center console boats. If you're running a 350 HP or larger powerhead, look at the ATLAS HD (Heavy Duty) variant rated for up to 400 HP.

What sets the ATLAS apart from other jack plates is the self-contained hydraulics. The pump and reservoir live inside the jack plate housing itself, not in a separate box mounted somewhere in the transom that you have to plumb hydraulic lines to. That means dramatically simpler install (typically half the labor time of a traditional system), no in-transom drilling for hydraulic lines, no separate reservoir to leak, and no fluid runs to chafe through. The unit ships with the rocker switch and relay harness in the box, so you wire 12V power and the switch run to the helm and you're done.

Lift speed is fast. Bottom to top in under 8 seconds. That's a meaningful operational difference compared to slower jack plates that can take 20 seconds or more to fully raise. When you need to lift the engine quickly to get over an obstacle or when you're shifting between hole shot and on-plane operation in tight water, the ATLAS responds in real time.

The lifting mechanism uses a Rod and Slot design with high-tech engineered polymer rods. Polymer rods are about six times more abrasion-resistant than steel rods, and they don't need grease lubrication. That eliminates the most common maintenance task on traditional jack plates. The polymer rods are also self-lubricating by material design, which means no maintenance schedule on the lift mechanism for the life of the plate.

The integrated heavy-duty safety cable is the small but critical detail. In the unlikely event of a hydraulic actuator failure, the safety cable prevents the engine from rotating into the cockpit. That's a feature that the original ATLAS introduced and that the rest of the industry has since adopted, because the alternative is genuinely dangerous on a high-horsepower outboard.

The hydraulic actuator is made in the USA. ATLAS specifically calls this out because their direct competitors source actuators from China, and the in-field reliability difference shows over years of saltwater and freshwater service. Field-replaceable actuator design means if it ever does need service, swap-out is a 2-pin removal job that you can do at the dock instead of pulling the whole plate.

Pre-drilled mount holes for shallow water anchors. ATLAS was the first jack plate to ship with predrilled mount points for Power-Pole and similar shallow water anchor brackets. If you have or plan to add a shallow water anchor, this saves you the drilling and the alignment work and gives you a clean factory-spec install.

Install. Plan a half-day if you're handy and have the right tools, or have your dealer or local rigger do it (typically a 2-hour shop job). The plate bolts to the transom using your existing engine mounting holes (or a new bolt pattern if you're replacing a non-jack-plate install). The engine then bolts to the back of the plate. Wire 12V power to the relay harness with proper fusing, run the switch wire to the helm, and you're done. No separate hydraulic lines to plumb because the pump is internal to the plate.

Limited lifetime warranty on the plate. Same-day shipping before 3 PM ET on in-stock units.