EVINRUDE 512117 Outboard Sending Unit Switch

( Manufacturer Part Number: 512117 ), ( Part Type: Switch Hp Sending Unit )

Review EVINRUDE Hp Outboard Trim Sending Unit Switch fits 1983–1990

The **Evinrude 512117 1983 90 Horsepower Outboard Sending Unit Switch** is a meticulously crafted, high-performance marine electrical component designed exclusively for Evinrude 90 HP outboard motors manufactured in the early 1980s, specifically the 1983 model year. This sending unit switch is a critical part of the engine s fuel and ignition control system, ensuring precise fuel delivery and optimal engine performance while maintaining reliability under demanding boating conditions. Constructed from durable marine-grade materials, including corrosion-resistant metal and high-quality plastic, this switch is built to withstand the harsh elements of saltwater, humidity, and constant vibration, making it a long-lasting investment for serious anglers, weekend warriors, and boating enthusiasts alike.

The design of the **512117 sending unit switch** is both functional and robust, featuring a compact yet sturdy housing that securely mounts to the engine s fuel pump or throttle linkage, allowing for seamless integration with the existing wiring and mechanical systems. Its internal components, including the potentiometer and electrical contacts, are engineered to provide smooth, responsive operation, ensuring accurate fuel flow adjustments and consistent throttle control. This switch plays a pivotal role in the engine s ability to maintain optimal RPMs, whether cruising at low speeds or accelerating under heavy load, making it an indispensable part of the outboard s overall performance.

For collectors, restorers, and boaters seeking to preserve the authenticity of their classic Evinrude 90 HP outboard, this sending unit switch is an essential OEM replacement part that guarantees compatibility and performance identical to the original equipment. Whether used in a meticulously restored vintage boat or as a direct replacement for a worn-out component, this switch ensures that the engine operates with the same precision and reliability it was designed for over four decades ago. Its straightforward installation process typically involving the removal of the old unit, alignment of the wiring harness, and secure reattachment to the engine makes it an accessible upgrade for both DIY enthusiasts and professional mechanics. With its blend of historical authenticity and modern durability, the **Evinrude 512117 1983 90 HP Outboard Sending Unit Switch** remains a sought-after part for those who demand nothing less than perfection in their marine power systems.

### **Pros and Cons of buying a Evinrude 511217 (1983 90 HP Outboard Sending Unit Switch)**

1. **Compatibility** The 1983 Evinrude 90 HP outboard is a well-known model, and this sending unit switch is designed specifically for it. If you own or plan to restore a matching engine, this part will fit without modification.

2. **Functionality** The sending unit switch is a critical component for the engine s fuel injection system, controlling fuel delivery based on throttle position. A working unit ensures proper engine performance and prevents stalling or rough idling.

3. **Availability** While older parts can be harder to find, this specific Evinrude switch is still relatively accessible through marine parts dealers, eBay, or salvage yards, especially if you re willing to search for used or refurbished units.

4. **Cost-Effective Repair** Replacing a faulty sending unit is often cheaper than overhauling the entire fuel system or buying a new engine. If the rest of the engine is in good condition, this could be a straightforward fix.

5. **Restoration Potential** If you re restoring a classic boat, sourcing original or compatible parts like this switch helps maintain authenticity and improves reliability.

6. **Prevents Further Damage** A failing sending unit can cause fuel starvation, leading to engine damage if ignored. Replacing it early can save money on more extensive repairs later.

1. **Age and Wear** The 1983 model is over 40 years old, meaning the part may have been exposed to corrosion, wear, or failure over time. A used unit could still be functional, but there s a risk of hidden damage.

2. **Limited Availability of New Units** Evinrude has evolved its designs since the 1980s, and exact replacements for older models may no longer be produced. You may need to source a used part or a universal alternative.

3. **Compatibility Concerns** Even if the part fits mechanically, electrical connections or wiring harnesses might differ slightly from modern setups. You may need to verify compatibility with your specific engine or consult a mechanic.

4. **Cost of Installation** While the part itself may be affordable, labor costs to remove the old unit, install the new one, and test the engine could add to the expense, especially if you re not mechanically inclined.

5. **Potential for Counterfeit or Low-Quality Parts** Buying from unverified sellers (e.g., untrusted online marketplaces) risks receiving a fake, refurbished, or damaged part. Always check reviews, seller ratings, or source from reputable dealers.

6. **Alternative Solutions** If the sending unit is the only issue, you might consider upgrading to a modern, more reliable fuel injection system or a used but well-maintained engine, depending on your long-term goals.

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### **Conclusion**

- You have confirmed the part is compatible with your engine.

- You re willing to invest time in sourcing a reliable unit (new or used).

- The rest of the engine is in decent condition and worth restoring.

- You re comfortable with basic mechanical work or have access to a mechanic.

- Explore universal replacements or aftermarket alternatives.

- Consider a used but fully serviced engine from a trusted source.

- Consult a marine specialist to assess whether repairing the sending unit is the best long-term solution.

If you re certain about the part s compatibility and can source it from a trusted seller (preferably with a warranty or return policy), purchasing the Evinrude 511217 sending unit is a reasonable choice for restoring or repairing your 1983 90 HP outboard. However, if the engine has other major issues or the part is hard to obtain, weigh the costs against alternatives like a full engine swap or upgrading to a more modern system. Always test the part thoroughly after installation to ensure proper function.

Details:

Used condition.

part #: 512117 prices

• $29.00-$49.99

specifications ouboaen:

• for makes: Evinrude
• for years: 1983-1990
• mpn: 512117
• part type: Switch Hp Sending Unit

returns ouboaen:

• policy: No Returns

seller ouboaen:

• # reviews: 229
• city: Warren, Texas
• rating: 100.0%

payments ouboaen:

• credit card: Visa
• wallet: Apple-pay
• other

offer ouboaen:

• quantity: 1
• availability: In Stock
• started: April 19, 2026
• options: Ship-to-home
• sold: 0

shipping ouboaen:

• service: USPS Ground Advantage
• carrier: USPS
• type: Calculated
• cost: $10.50
• transit: 5-11 Days
• class: Standard

general ouboaen:

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

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