T-H Marine JP-1A Hi-Jacker 6 Inch 2-Piece Jack Plate for V-4 and V-6 Engines up to 200 HP

The T-H Marine JP-1A Hi-Jacker jack plate is a 2-piece, 6 inch setback jack plate built for boaters running V-4 and V-6 outboard engines up to 200 hp. It is constructed of 3/8 inch aircraft aluminum for a strong, lightweight mounting platform between the transom and the outboard, and its design allows full tilt even with dual steering setups, so the engine can trim and tilt through its full range without interference from the plate itself. The plate provides 4 inches of vertical adjustment, letting boaters fine-tune engine height to improve hole shot, top-end speed, and fuel efficiency for their specific hull and running conditions.

All hardware is stainless steel, and the plate uses brass nuts to prevent galling between fasteners during installation and over years of service. The aluminum surface carries a polished finish to resist corrosion in freshwater and saltwater environments. The JP-1A ships as a single, complete jack plate assembly.

Specifications

• Brand: T-H Marine
• Manufacturer Part Number: JP-1A
• Product Name: Hi-Jacker Plate 6 inch
• Setback: 6 inches
• Vertical Adjustment: 4 inches
• Construction: 2-piece design
• Material: 3/8 inch aircraft aluminum
• Finish: Polished, corrosion resistant
• Hardware: Stainless steel bolts with brass nuts
• Maximum Engine Rating: Up to 200 hp
• Engine Compatibility: V-4 and V-6 engines
• Steering Compatibility: Full tilt with dual steering
• Item Dimensions: 10 x 15 x 6 inches
• Weight: 19.08 pounds
• Number of Items: 1
• UPC: 733572002010

Frequently Asked Questions

What engines is the T-H Marine JP-1A jack plate designed to fit? The JP-1A is built for V-4 and V-6 outboard engines up to a maximum of 200 hp.

How much setback and vertical adjustment does the JP-1A provide? The JP-1A Hi-Jacker jack plate provides a 6 inch setback with 4 inches of vertical adjustment, allowing the engine height to be tuned for the boat and running conditions.

What material is the JP-1A jack plate made of? It is constructed of 3/8 inch aircraft aluminum with a polished finish that resists corrosion.

Will the JP-1A work with dual steering setups? Yes, the JP-1A jack plate design allows full tilt even when the outboard is equipped with dual steering.

What hardware is used to mount the JP-1A jack plate? All mounting bolts are stainless steel, and brass nuts are used to prevent galling during installation and long-term use.

How many pieces does the JP-1A jack plate come in? The Hi-Jacker JP-1A is a 2-piece jack plate design, sold as one complete unit.

What are the dimensions of the JP-1A jack plate? The JP-1A measures 10 x 15 x 6 inches.

How much does the JP-1A jack plate weigh? The JP-1A weighs 19.08 pounds.

Can the JP-1A be used on engines larger than 200 hp? No, the JP-1A is rated for V-4 and V-6 engines up to a maximum of 200 hp and is not intended for larger engines.

Does the JP-1A jack plate include all mounting hardware? Yes, the JP-1A ships as a complete assembly with stainless steel bolts and brass nuts included.

Why does the JP-1A use brass nuts with stainless steel bolts? Brass nuts are paired with the stainless steel bolts on the JP-1A specifically to prevent galling, which can occur when stainless fasteners are threaded together under load.