MERCURY Throttle Shaft Nmr 745061321359

( Part Type: Throttle Shaft ), ( UPC: 745061321359 )

Review MERCURY Throttle Shaft Assembly #nmr

The **Mercury 745061321359 Throttle Shaft (NMR)** is a precision-engineered component designed specifically for Mercury outboard motors, ensuring optimal performance, reliability, and smooth operation in marine applications. This throttle shaft is part of Mercury s **NMR (New Motor Range)** series, which emphasizes advanced engineering and durability to meet the demands of modern boating. Crafted from high-quality materials, including hardened steel and corrosion-resistant alloys, this shaft is built to withstand the harsh conditions of saltwater environments while maintaining smooth, responsive throttle control. The design incorporates a **ball-bearing system** for reduced friction, allowing for effortless shifting between throttle positions whether accelerating, idling, or decelerating with minimal wear over time. Its **precision-machined surfaces** and **sealed bearings** help prevent water ingress and debris buildup, extending the life of the throttle mechanism and reducing the need for frequent maintenance. Ideal for use in **Mercury outboards ranging from 90 to 250 horsepower**, this throttle shaft is engineered to integrate seamlessly with the motor s **NMR transmission system**, providing a **smooth, progressive response** to throttle inputs for enhanced handling and fuel efficiency. Whether used in recreational fishing boats, speedboats, or performance cruisers, this component ensures consistent performance under varying loads, from trolling to high-speed cruising. Built to Mercury s rigorous quality standards, the **745061321359 Throttle Shaft** is a critical part of maintaining the reliability and responsiveness of your outboard motor, delivering both performance and longevity in demanding marine conditions.

**Pros and Cons of buying a Mercury 745061321359 Throttle Shaft (NMR)**

1. **Compatibility and Fit:** This throttle shaft is designed specifically for Mercury outboard motors, particularly those with the NMR (New Motor Run) system. It is a direct replacement part, ensuring an exact fit without modifications required. This reduces the risk of installation errors and ensures proper functionality.

2. **Performance Reliability:** The throttle shaft is a critical component for controlling engine speed and throttle response. A high-quality part like this one helps maintain smooth operation, reducing jerky or delayed throttle responses that can occur with worn or faulty components.

3. **Durability:** Mercury is a well-known brand in marine engines, and their replacement parts are generally built to last. This throttle shaft is likely constructed from durable materials, such as stainless steel or high-grade aluminum, which resist corrosion and wear over time, especially in marine environments where saltwater exposure is common.

4. **Ease of Installation:** Since it is a direct replacement part, swapping out the old throttle shaft should be relatively straightforward. Most users can install it themselves with basic tools, though some may prefer professional installation if they are unfamiliar with outboard motor repairs.

5. **Compatibility with Modern Systems:** The NMR system is a relatively modern feature in Mercury outboards, designed to improve throttle response and fuel efficiency. Purchasing an official Mercury part ensures compatibility with these advanced systems, avoiding potential issues with aftermarket parts that may not integrate seamlessly.

6. **Warranty and Support:** Buying from an authorized dealer or directly from Mercury ensures that the part comes with a warranty, providing peace of mind in case of defects. Mercury also offers customer support and technical assistance, which can be helpful if installation or performance issues arise.

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1. **Cost:** Replacement parts from major manufacturers like Mercury can be more expensive than aftermarket alternatives. While the price reflects quality and reliability, it may still be a significant investment, especially if the part is needed urgently or if the boat owner is on a tight budget.

2. **Limited Availability:** Depending on the location, finding an authorized dealer or a stockist for this specific part may require some effort. In remote areas or during peak boating seasons, parts inventory might be limited, leading to potential delays in receiving the part.

3. **Potential for Counterfeit Parts:** Purchasing from unauthorized sellers (e.g., third-party online marketplaces without verification) risks receiving counterfeit or substandard parts. These parts may not fit correctly, could fail prematurely, or even damage the motor if installed improperly. Always verify the seller s authenticity.

4. **Skill Dependency:** While the installation is relatively straightforward, it does require some mechanical aptitude. Mistakes during installation such as improper alignment or overtightening could damage the throttle system or adjacent components. Those without experience may need to consult a professional.

5. **Compatibility Confusion:** Although this part is designed for specific Mercury models, there is always a chance of confusion if the exact model or year is misidentified. Double-checking the motor s serial number and model against the part s specifications is crucial to avoid purchasing the wrong component.

6. **Environmental Factors:** Even with a high-quality part, prolonged exposure to saltwater, UV radiation, and temperature fluctuations can accelerate wear. Regular maintenance, such as cleaning and lubricating the throttle shaft, is necessary to extend its lifespan.

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The Mercury 745061321359 throttle shaft is a reliable and high-quality replacement part for NMR-equipped Mercury outboard motors. Its advantages such as precise compatibility, durability, and integration with modern systems make it a strong choice for boat owners prioritizing performance and longevity. However, the higher cost and potential challenges in sourcing or installing the part may deter some users. For those who value brand reliability and long-term functionality, this part is well worth the investment, provided it is purchased from a trusted source and installed correctly.

If you require a throttle shaft for a Mercury outboard motor with the NMR system, purchasing the official Mercury part (745061321359) is the safest and most reliable option. To ensure a smooth process:

- **Verify compatibility** by cross-referencing your motor s model and serial number with Mercury s documentation.

- **Buy from an authorized dealer or Mercury s official website** to avoid counterfeit parts and ensure warranty coverage.

- **Follow installation instructions carefully**, or seek professional help if unsure, to prevent damage to the motor.

- **Perform regular maintenance**, such as cleaning and lubricating the throttle system, to prolong the part s lifespan.

For budget-conscious buyers who are confident in their mechanical skills, exploring high-quality aftermarket alternatives (from reputable brands) could be a viable option, though these may not offer the same level of warranty or long-term reliability. Ultimately, the Mercury part is the best choice for those who want peace of mind and optimal performance.

Details:

This is a genuine Mercury Marine part, machined to OEM tolerances. If you're rebuilding a carb and want to do it right the first time, don't skip shaft. The Mercury Throttle Shaft Assembly #817253A1 is the genuine OEM part that restores precise throttle response and gets your carb functioning way it was designed. Ideal for use during a full carburetor rebuild.

Direct replacement for carburetors specifying part #817253A1. Replacing it as part of a full carb rebuild rather than just cleaning and re-jetting is the right call if you're already in there shaft shows any slop or wear. The throttle shaft is the pivot point that controls airflow through carburetor venture when it wears, develops play, or gets gummed up from old fuel, you lose crisp control makes an outboard feel dialed in. Mercury Marine 817253A1 Carburetor Rebuild Kits: If your outboard is idling rough, hesitating on acceleration, or the throttle feels sloppy, shaft assembly one of first places to look during a carburetor rebuild.

At just over half an ounce, its a lightweight component that ships quickly and fits directly into Mercury carburetors spec the 817253A1. Restores precise throttle response and eliminates shaft play. Genuine OEM Mercury Marine throttle shaft assembly.

specifications ouboaen:

• for makes: Mercury
• part type: Throttle Shaft
• upc: 745061321359

seller ouboaen:

• rating: 99.5%
• # reviews: 32721
• city: Grain Valley, Missouri

offer ouboaen:

• sold: 0
• availability: In Stock
• quantity: 1
• started: April 27, 2026
• options: Ship-to-home

returns ouboaen:

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

payments ouboaen:

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

general ouboaen:

• Boat Parts > Outboard Engines Components > Other
• condition: New

shipping ouboaen:

• class: Standard, Expedited
• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail, UPS Ground
• cost: $8.60
• carrier: USPS, UPS
• transit: 5-11 Days

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