EVINRUDE 439881 Fuel Pump Ay Nos Kit OMC36

( Brand: Evinrude ), ( Manufacturer Part Number: 439881 ), ( Part Type: Fuel Pump )

Review EVINRUDE Genuine Johnson Omc Fuel Pump Kit Ay Nos Unopened

The **Evinrude 439881 Johnson OMC Fuel Pump Kit (AY NOS OMC36)** is a high-performance, factory-direct replacement solution designed to restore optimal fuel delivery and engine efficiency to your Johnson OMC outboard motor, ensuring reliable operation and extended longevity. This meticulously engineered kit includes a **new OEM-specification fuel pump assembly**, complete with a robust **diaphragm-driven pump mechanism**, precision-machined components, and a durable **plastic or metal housing** (depending on the specific model variant), all of which work in tandem to maintain consistent fuel pressure and flow critical for smooth throttle response and power output. Engineered to meet or exceed the original equipment manufacturer s (OMC) specifications, this kit is compatible with a range of **Johnson outboards**, including the **OMC36 series**, and is ideal for both marine enthusiasts and professional technicians seeking a direct replacement for worn or failed fuel pumps. The kit is designed with **easy installation in mind**, featuring a straightforward mounting system that aligns seamlessly with the motor s fuel rail, reducing the risk of leaks or improper fitment. Whether you re preparing for a season of high-performance cruising, fishing, or watersports, this fuel pump kit ensures that your engine receives the precise fuel metering required to operate at peak efficiency, minimizing the risk of stalling, hesitation, or fuel starvation common issues that plague older or high-mileage motors. Built to withstand the demands of saltwater corrosion and mechanical stress, the components are treated with corrosion-resistant coatings where applicable, providing added durability in harsh marine environments. For those seeking a cost-effective yet high-quality upgrade, this kit offers a reliable alternative to aftermarket alternatives, delivering the performance and reliability of genuine OMC engineering. Whether you re restoring an older outboard or maintaining a newer model, the **Evinrude 439881 Johnson OMC Fuel Pump Kit** is a critical component for preserving engine health and ensuring trouble-free operation year after year.

### **Pros and Cons of buying a Evinrude 439881 Johnson OMC Fuel Pump Kit (AY NOS OMC36)**

1. **Compatibility with Johnson/Evinrude Engines** This kit is specifically designed for the **Johnson OMC 36 (OMC36) and AY NOS engines**, ensuring a proper fit without modification. It is a direct replacement for the stock fuel pump, reducing the risk of installation errors.

2. **Improved Fuel Delivery** The upgraded pump provides **better fuel flow and pressure regulation**, which can enhance engine performance, especially in high-demand situations like towing or high-speed operation. This helps prevent fuel starvation under load.

3. **Durability and Reliability** OMC (Outboard Marine Corporation) fuel pumps are known for their **quality construction**, reducing the likelihood of leaks or premature failure compared to aftermarket alternatives that may not be as rigorously tested.

4. **Easy Installation** Since it is a **direct replacement**, installation is straightforward for those with basic mechanical skills. No major modifications to the fuel system are required, and it fits standard OMC fuel line connections.

5. **Warranty Coverage** Purchasing from an authorized dealer or reputable seller often includes a **factory-backed warranty**, providing peace of mind against defects in materials or workmanship.

6. **Cost-Effective Upgrade** Compared to full engine rebuilds or alternative fuel systems, this kit offers a **budget-friendly solution** to improve fuel delivery without significant downtime or expense.

7. **Maintenance-Friendly** The design allows for **easy access for maintenance or replacement** if needed, reducing long-term hassles.

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1. **Limited to Specific Engines** This kit is **exclusive to the Johnson OMC 36 (OMC36) and AY NOS models**. Owners of other Johnson or Evinrude engines (e.g., older models, different displacement engines, or newer E-TEC engines) **cannot use it**, which may limit its appeal to a narrower audience.

2. **No Performance Gains Without Supporting Modifications** While the pump improves fuel delivery, **installing it alone may not significantly boost horsepower or throttle response** unless paired with other upgrades (e.g., fuel injectors, ECU tuning, or a larger fuel tank). Expectations should be realistic this is a **reliability and efficiency upgrade**, not a performance enhancement.

3. **Potential Compatibility Issues with Aftermarket Fuel Systems** If the engine has been previously modified with **aftermarket fuel injectors, fuel rails, or ECU tuning**, the stock pump may not be compatible, and a **custom solution** (e.g., a high-flow pump) might be required instead.

4. **Cost Relative to Other Options** While affordable for an OMC part, the price may be **higher than generic aftermarket pumps** from non-branded manufacturers. However, the trade-off is **proven reliability** rather than just cost savings.

5. **Installation Requires Basic Mechanical Skill** Though straightforward, improper installation (e.g., incorrect line connections, air leaks, or over-tightening) could lead to **fuel leaks or pump failure**. Those unfamiliar with fuel system work may need professional assistance.

6. **No Noise or Vibration Reduction** Unlike some high-performance fuel pumps, this kit does not address **engine noise or vibration issues**; it focuses solely on fuel delivery.

7. **Availability and Lead Times** As an **older or discontinued model-specific part**, stock may be limited, and lead times could be longer than for more commonly ordered components.

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The **Evinrude 439881 Johnson OMC Fuel Pump Kit (AY NOS OMC36)** is a **practical and reliable upgrade** for owners of compatible Johnson/Evinrude engines. It addresses common fuel delivery issues, improves long-term reliability, and is a **cost-effective solution** for those seeking a direct replacement without major modifications. However, it is **not a performance upgrade** and is limited to specific engine models.

- **Boat owners experiencing fuel starvation, rough idling, or poor throttle response** in their OMC36 or AY NOS engines.

- Those looking to **prevent future fuel pump failures** and extend engine life.

- DIYers comfortable with basic fuel system maintenance.

- Owners of **non-compatible engines** (e.g., E-TEC, older models, or different displacements).

- Those seeking **significant performance gains** without additional modifications.

- Individuals who prefer **aftermarket alternatives** for cost savings, assuming they are willing to risk reliability trade-offs.

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- You have a **Johnson OMC 36 or AY NOS engine** and are experiencing fuel-related issues.

- You want a **direct, reliable replacement** with minimal installation hassle.

- You value **brand-backed quality** over generic aftermarket parts.

- Your engine is **not compatible** with the OMC36/AY NOS models.

- You are looking for **performance upgrades** (consider a high-flow pump or ECU tuning instead).

- You prefer **cheaper aftermarket options** and are willing to accept potential reliability risks.

- If performance is the goal, explore **high-flow fuel pumps** (e.g., from **Seafoam, Evinrude Performance, or aftermarket brands**) paired with **ECU tuning**.

- For older engines, check for **remanufactured OMC pumps** if the new kit is unavailable.

- Always verify **exact engine model compatibility** before purchasing to avoid returns or installation issues.

**Final Verdict:** For the right engine and owner, this is a **solid, no-frills upgrade** worth considering. For everyone else, weigh the pros and cons carefully against alternatives.

Details:

Genuine Evinrude Johnson OMC Fuel Pump Kit AY 439881 NOS UNOPENED OMC36. Shipped with USPS Ground Advantage.

part #: 439881 price

• $73.63

specifications ouboaen:

• for makes: Johnson, Omc, Evinrude
• brand: Evinrude
• mpn: 439881
• part type: Fuel Pump

offer ouboaen:

• options: Ship-to-home
• quantity: 1
• sold: 0
• started: February 20, 2026
• best offers: True
• availability: In Stock

seller ouboaen:

• rating: 99.4%
• # reviews: 7500
• city: Spokane, Washington

general ouboaen:

• Boat Parts > Outboard Engines Components > Intake Fuel Systems
• condition: New other see details

payments ouboaen:

• credit card: Diners-club
• wallet: Apple-pay
• other

returns ouboaen:

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

shipping ouboaen:

• cost: $0.00
• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage
• transit: 4-10 Days
• class: Standard

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