T-H MARINE SUPPLIES JPZ-4-DP Lock Set Manual Single Jack 733572084252 Plate

( Brand: T-h Marine Supplies ), ( Manufacturer Part Number: JPZ-4-DP ), ( Part Type: Lock Manual Plate ), ( UPC: 733572084252 )

Review T H MARINE SUPPLIES Z lock Inch Set Manual Single Adjust Jack Plate

The **T-H Marine JPZ-4-DP Z-Lock Set (Manual Single Jack Plate)** is a high-performance, marine-grade hydraulic jacking system meticulously engineered for professional boatlifting, maintenance, and repair operations. Designed with precision and durability in mind, this robust kit is ideal for marine technicians, shipyards, and boat owners who require reliable, high-capacity lifting solutions for vessels ranging from small recreational boats to mid-sized commercial craft. The system features a **manual single jack plate**, which allows for effortless, hands-free operation when paired with the included hydraulic pump, eliminating the need for cumbersome manual cranking. The **Z-Lock mechanism** ensures a secure, vibration-resistant connection between the jack and the lifting plate, preventing slippage or misalignment even under heavy loads, while its modular design enables quick and easy installation or removal without the need for specialized tools. Constructed from **marine-grade stainless steel and heavy-duty aluminum alloys**, this jacking set is built to withstand the harshest marine environments, including saltwater corrosion, extreme temperatures, and constant exposure to moisture. The **DP (Dual-Piston) configuration** provides superior load distribution and stability, reducing the risk of jack tipping or uneven lifting, which is critical when working with asymmetrical or unevenly weighted boats. Whether used for routine maintenance, hull inspections, or major repairs, this jacking system delivers consistent, repeatable performance with minimal effort, making it an indispensable tool for any professional or serious enthusiast. Its compact yet sturdy design allows for versatile placement on docks, lifts, or workstations, while the **manual operation** ensures reliability in situations where power sources may be limited or unreliable. With its blend of strength, precision, and ease of use, the T-H Marine JPZ-4-DP Z-Lock Set stands as a premium choice for those who demand nothing less than excellence in marine lifting solutions.

Buying the **T-H Marine JPZ-4-DP Z-Lock Set (Manual Single Jack Plate)** is a practical choice for those looking to upgrade or maintain their boat s lifting system, particularly for stern drives or outboard motors. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Durability and Strength**

The Z-Lock system is designed for heavy-duty use, featuring high-strength steel components that resist wear, corrosion, and fatigue. This makes it ideal for frequent lifting, lowering, and securing of stern drives or outboards, even in demanding conditions like saltwater environments.

2. **Easy Installation and Compatibility**

The manual single jack plate is designed for straightforward installation, often requiring minimal modifications to existing setups. It is engineered to fit a wide range of stern drives and outboards, reducing the need for customization. The JPZ-4-DP model, in particular, is part of T-H Marine s reliable line of Z-Lock systems, which are widely used in the marine industry.

3. **Reliability and Low Maintenance**

Z-Lock systems are known for their robustness and minimal maintenance requirements. The manual operation eliminates the need for electrical components, reducing the risk of electrical failures or malfunctions. Regular lubrication of moving parts (such as the jack plate and locking mechanism) is typically sufficient to keep the system in good working order.

4. **Safety Features**

The Z-Lock system includes a secure locking mechanism that prevents accidental disengagement while the motor or stern drive is elevated. This is critical for safety, especially when the boat is in the water or during transport. The manual operation also allows for precise control during lifting and lowering.

5. **Cost-Effective Upgrade**

Compared to hydraulic or electric lifting systems, the manual Z-Lock set is generally more affordable to purchase and maintain. It offers a balance between performance and cost, making it accessible for both DIY enthusiasts and professional marine technicians.

6. **Versatility**

The single jack plate can be used in various applications, including recreational boats, fishing vessels, and small commercial craft. Its modular design allows for customization to fit different motor sizes and configurations.

7. **Proven Performance**

T-H Marine is a well-established brand in the marine industry, and the Z-Lock system has a reputation for reliability. Many boat owners and mechanics trust this system for its consistent performance over time.

---

### **Cons**

1. **Manual Operation Can Be Labor-Intensive**

Unlike hydraulic or electric systems, the manual operation requires physical effort to lift and lower the motor or stern drive. This can be tiring, especially for larger or heavier units, and may not be ideal for users with limited strength or mobility. Over time, repetitive use can also lead to user fatigue.

2. **Limited Speed of Operation**

Manual systems are inherently slower than hydraulic or electric alternatives. This can be inconvenient during quick tasks, such as frequent motor changes or when time is a factor (e.g., during a busy day on the water).

3. **Dependence on User Skill**

Proper use of the manual jack plate requires some skill to avoid misalignment or damage to the motor or stern drive. Incorrect handling can lead to binding, stripped threads, or even dropped motors, which could cause damage to the unit or the boat s transom.

4. **Potential for Wear Over Time**

While the Z-Lock system is durable, all mechanical components are subject to wear. The manual jack plate, in particular, may require periodic inspection and replacement of parts like the jack screw, locking pawls, or bushings. Saltwater exposure can accelerate corrosion, necessitating more frequent maintenance.

5. **Space Constraints**

The installation of a manual jack plate may require additional space around the motor or stern drive. In tightly confined engine compartments, clearance for the jack s operation may be limited, making installation or use challenging.

6. **No Built-In Power Assist**

Unlike electric or hydraulic systems, the manual Z-Lock set does not offer power assistance. This can be a drawback for users who prefer convenience or have physical limitations that make manual operation difficult.

7. **Potential for Misalignment**

If not installed or used correctly, the manual jack plate can cause misalignment of the motor or stern drive, leading to uneven wear on the drive components or even damage to the motor itself. This risk underscores the importance of careful installation and regular checks.

---

### **Conclusion**

The **T-H Marine JPZ-4-DP Z-Lock Set (Manual Single Jack Plate)** is a solid choice for boat owners seeking a durable, reliable, and cost-effective solution for lifting and securing stern drives or outboard motors. Its strengths lie in its durability, ease of installation, low maintenance requirements, and safety features. These qualities make it particularly suitable for users who prioritize reliability and are willing to invest the physical effort required for manual operation.

However, the system s manual nature introduces limitations, such as labor-intensive operation, slower speed, and a reliance on user skill. These factors may not be ideal for users who prefer automated systems or have physical constraints. Additionally, while the Z-Lock system is robust, it is not immune to wear, and users must be prepared for periodic maintenance, especially in harsh environments like saltwater.

- Recreational boat owners who frequently handle their own motor changes.

- Users with smaller to medium-sized stern drives or outboards.

- Those who prioritize durability and low maintenance over speed or automation.

- Boaters who are comfortable with manual labor and can ensure proper installation and use.

For users who require faster operation, power assistance, or easier handling, a hydraulic or electric lifting system might be a more appropriate choice. However, for most practical and budget-conscious applications, the T-H Marine Z-Lock set remains a highly recommended option.

---

### **Recommendation**

If you are looking for a **durable, manual lifting solution** for your stern drive or outboard motor and are willing to invest the effort required for manual operation, the **T-H Marine JPZ-4-DP Z-Lock Set** is an excellent purchase. It offers a proven track record of reliability, ease of installation, and low maintenance, making it a practical upgrade for many boat owners.

1. The system is compatible with your motor size and boat configuration.

2. You have adequate space and clearance for installation and operation.

3. You are comfortable with manual operation and can follow proper installation and maintenance procedures.

For those who prefer convenience or have physical limitations, consider exploring **hydraulic or electric alternatives**, but be aware that these options typically come with higher upfront costs and maintenance requirements. The Z-Lock set strikes a strong balance between performance and affordability, making it a top recommendation for its intended use.

Details:

Matching slotted extrusions LOCK side plates in place. Available in 4, 6, 8, 10 and 12 setbacks. 5 of Vertical Adjustment. Easy to Adjust From Top of Jack.

Full Material For Strength. Z-Lock 4 Set Back Manual Single Adjust Jack Plate. Handles All V6 and V8 Outboards up to 300 hp. Z-Lock Jack Plate Revolutionary Design Adds Strength and Stability.

Features: Z-Lock Jack Plate Design Eliminates Side Slippage.

part #: jpz4 prices

• $425.27-$484.19

specifications traiparboa:

• brand: T-h Marine Supplies
• mpn: Jpz-4-dp
• part type: Lock Manual Plate
• upc: 733572084252

shipping traiparboa:

• type: Calculated
• class: Standard, Economy
• cost: $82.55
• transit: 4-10 Days
• carrier: USPS, FedEx
• service: USPS Ground Advantage, FedEx Ground Economy

seller traiparboa:

• # reviews: 3646
• rating: 99.2%
• city: Freeport, New York

payments traiparboa:

• other
• credit card: Discover
• wallet: Google-pay

general traiparboa:

• condition: New
• Parts Accessories > Boat Parts > Trailer Parts

returns traiparboa:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer traiparboa:

• sold: 0
• quantity: 10
• availability: In Stock
• options: Ship-to-home
• started: February 24, 2026

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