Manufacturer Part Number (MPN)
1358503
Marine Engineering Specialist Insight: The Ulterra QUEST (MPN 1358503) is the flagship of big-water automation. This 72-inch model is specifically designed for large center consoles and deep-hull boats. By combining a **brushless motor** with integrated **MEGA Side Imaging (MSI)**, it provides the most powerful, quietest, and most visually advanced trolling experience in the industry.
The Ultimate Quest for Big-Water Control
The Minn Kota Ulterra QUEST (MPN: 1358503) is built to dominate large freshwater environments. Engineered with a revolutionary **brushless architecture**, this motor provides 50% more torque and extended run times compared to traditional models. With **Dual 24/36V Auto-Sensing**, it generates 90 lbs of thrust at 24V and a massive 115 lbs at 36V, giving you the power to hold position in extreme wind and heavy waves.
This model features the industry-leading **Built-In MEGA Side Imaging (MSI)**. The transducer is housed directly within the lower unit, delivering crystal-clear 125ft side-to-side sonar views without the need for external cables. Coupled with **Auto Stow/Deploy and Power Trim**, the 72-inch shaft can be managed completely hands-free via the wireless remote or your Humminbird fish finder.
Technical Specifications
| Official MPN |
1358503 |
| Motor Architecture |
QUEST Brushless Series |
| Thrust Level |
90 lbs (24V) / 115 lbs (36V) |
| Shaft Length |
72 Inches (183 cm) |
| Integrated Sonar |
MEGA Side & Down Imaging (MSI/MDI) |
| Automation |
Auto Stow/Deploy & Power Trim |
| GPS Technology |
Advanced GPS (One-Boat Network Ready) |
The QUEST Advantage:
- MEGA Side Imaging: See high-definition structure and fish up to 125 feet on either side of the motor—integrated for zero interference.
- Brushless Silent Drive: Experience near-silent operation and a massive 50% increase in torque for superior boat control.
- Carbon Fiber Reinforced Shaft: Specifically engineered to withstand the extreme torque of a 115 lb thrust system at a 72" length.
- Real-Time Battery Monitoring: Get exact power telemetry and "time-to-empty" data sent directly to your screen.
- Spot-Lock with Jog: The most accurate GPS anchoring ever made, allowing for precise 5-foot adjustments in any direction.
Frequently Asked Questions
1. Why is the 72-inch shaft necessary for the Ulterra QUEST?
Large center consoles and deep-V hulls require a 72-inch shaft to ensure the prop and MEGA Side Imaging transducer stay submerged during rough water swells and high-wind conditions.
2. Can I use this motor with Lithium batteries?
Yes. The QUEST brushless system is fully optimized for Lithium battery banks, offering consistent voltage and maximized run-time for multi-day excursions.
Marine Engineering Specialist | Verified Minn Kota QUEST MSI Technical Data | MPN: 1358503
