EVINRUDE 0391551 Bent Skeg Lower Unit Gearcase

( Brand: Evinrude ), ( Manufacturer Part Number: 0391551 ), ( Part Type: Unit ), ( Country Of Origin: United States )

Review EVINRUDE Bent Skeg Johnson Oem Lower Unit Gearcase Long Inch fits 2020

The **Evinrude 0391551 Bent Skeg Johnson Lower Unit Gearcase** is a precision-engineered marine propulsion component designed to deliver unmatched performance, durability, and efficiency for outboard motors in the Johnson/Evinrude lineup. This lower unit gearcase, identified by its part number **20-391551**, is specifically crafted to accommodate the **bent skeg** design, a signature feature of Johnson outboards that enhances hydrodynamic efficiency by reducing drag and improving fuel economy. The gearcase itself is constructed from high-grade aluminum alloy, ensuring a robust yet lightweight structure that resists corrosion and withstands the harshest marine environments, whether in saltwater or freshwater applications. Inside, the gearcase houses a meticulously machined internal gear system, including the drive gears, pinion shaft, and reverse mechanism, all of which are engineered to provide smooth, reliable power transmission from the motor s engine to the propeller. The **20-391551** is compatible with a range of Johnson/Evinrude outboard models, making it a versatile replacement part for boaters seeking to restore or upgrade their lower unit after wear, damage, or routine maintenance.

One of the standout features of this lower unit is its **sealed and lubricated design**, which minimizes the risk of water intrusion and extends the lifespan of critical components. The gearcase is paired with a **flexible shaft coupling** that absorbs vibrations and torsional forces, reducing stress on both the engine and propeller while enhancing overall ride comfort. Additionally, the bent skeg configuration of this lower unit contributes to superior handling and stability, particularly at higher speeds, by optimizing the boat s wake pattern and reducing bow rise. Whether installed on a performance fishing boat, a family cruiser, or a high-speed recreational vessel, the **Evinrude 0391551 Bent Skeg Johnson Lower Unit Gearcase** ensures seamless power delivery and long-term reliability. For boaters who demand both performance and longevity, this lower unit is an essential component that bridges the gap between engine power and propeller efficiency, delivering the kind of smooth, responsive performance that sets Johnson/Evinrude outboards apart.

### **Pros and Cons of buying a Evinrude 0391551 Bent Skeg Johnson Lower Unit Gearcase (20-391551)**

1. **Compatibility with Johnson/Evinrude Outboards** This lower unit is designed specifically for Johnson and Evinrude outboards, ensuring proper fitment and functionality. It is a direct replacement for the original gearcase, which reduces the risk of compatibility issues.

2. **Durability and Performance** Johnson and Evinrude are well-known for manufacturing reliable marine gearcases. The bent skeg design helps improve fuel efficiency and reduces drag, which can enhance overall performance, especially in planing boats.

3. **OEM Quality** As an original equipment manufacturer (OEM) part, it meets the same high standards as the original gearcase installed by the manufacturer. This means it should provide the same level of durability and performance as a new unit.

4. **Warranty Coverage** Purchasing from an authorized dealer or directly from Johnson/Evinrude may include a warranty, offering protection against manufacturing defects. This can be valuable if the part fails prematurely.

5. **Ease of Installation** Since it is a direct replacement, installation should be straightforward for someone with basic mechanical skills. However, proper alignment and sealing are critical to avoid leaks or performance issues.

6. **Aftermarket Support** Many marine mechanics and dealerships are familiar with this part, making repairs, maintenance, and troubleshooting easier if needed.

---

1. **Cost** OEM parts like this can be expensive, especially if purchased new. The price may be higher than aftermarket alternatives, which could offer similar performance at a lower cost.

2. **Limited Availability** Depending on the region, finding an authorized dealer or a reliable seller may be challenging. Some parts may require ordering online, which could involve shipping delays.

3. **Potential for Counterfeit Parts** Buying from untrusted sellers (e.g., third-party online marketplaces) increases the risk of receiving a counterfeit or refurbished part that doesn t meet OEM standards. Always verify the seller s reputation.

4. **Weight and Size** Lower units are heavy and bulky, making them difficult to handle alone. Installation may require assistance or specialized tools, adding to labor costs if professional help is needed.

5. **Compatibility with Modified or Aftermarket Outboards** If the outboard has been heavily modified (e.g., with aftermarket propellers or drivetrain components), the OEM gearcase may not integrate perfectly, leading to performance issues or the need for additional adjustments.

6. **Environmental and Handling Risks** Exposure to saltwater, debris, or improper storage can damage the gearcase even before installation. It must be kept dry and protected during transit and storage.

---

The **Evinrude 0391551 bent skeg Johnson lower unit gearcase (20-391551)** is a high-quality, reliable replacement part that ensures compatibility and performance for Johnson/Evinrude outboards. Its OEM status guarantees durability and warranty coverage, making it a strong choice for boat owners who prioritize quality and longevity. However, the higher cost, potential availability issues, and the risk of counterfeit parts are significant drawbacks that must be carefully considered.

If the budget allows and the part is sourced from a trusted dealer, this is an excellent investment for maintaining or restoring the performance of a Johnson/Evinrude-powered boat. For cost-conscious buyers, comparing it with reputable aftermarket alternatives (e.g., from brands like **Mercury, SeaFox, or Marine Parts Warehouse**) may yield similar results at a lower price, provided the aftermarket part is of high quality and properly rated for the application.

---

- **Buy from an authorized dealer or Johnson/Evinrude-approved seller** to ensure authenticity and warranty coverage.

- **Verify compatibility** with your specific outboard model, including year, horsepower, and any modifications.

- **Budget for installation costs** if professional help is required, as improper installation can void warranties and cause leaks or damage.

- **Consider aftermarket options** if the OEM part is significantly overpriced, but research thoroughly to ensure the alternative meets or exceeds OEM standards.

- **Inspect the part upon receipt** for any signs of damage, corrosion, or wear before installation.

For most boat owners who value reliability and long-term performance, the **Evinrude 0391551 bent skeg lower unit** is a worthwhile purchase when obtained from a trusted source. However, weigh the pros and cons against your budget and needs before committing.

Details:

The driveshaft is Long 20 inches. Shipping is only to the lower 48 states. It shifts well, and both shafts turn smoothly. Good used BENT SKEG Johnson Evinrude OEM Lower Unit Gearcase Long 20 0391551 391551.

The engine this part came from was run in freshwater only.

part #: 0391551 prices

• $275.00-$450.00

specifications ouboaen:

• for makes: Johnson, Evinrude
• for years: 2020
• brand: Evinrude
• mpn: 0391551
• part type: Unit
• country of origin: United States

seller ouboaen:

• # reviews: 792
• rating: 99.9%
• city: Clarksville, Michigan

general ouboaen:

• Boat Parts > Outboard Engines Components > Complete Outboard Lower Units
• condition: Used

offer ouboaen:

• started: May 13, 2026
• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home

returns ouboaen:

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

payments ouboaen:

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

shipping ouboaen:

• cost: $150.00
• class: Economy
• transit: 3-8 Days
• service: Economy
• type: Fixed

Evinrude 0391551 Is Similar To:

• 017612 017612 Evinrude Brp Johnson E-tec (37% similar) MC, Evinrude, johnson e-etc outboard motor 3 gallon remote oil tank w low sensor good for all and newer systems check model's including will not work with Fichte mounting bracket included...(September 1st, 2017)
• 0439195 5000334 0439195 5000334 Johnson-evinrude Fuel Pump (32.1% similar) Inventory: A1. Condition: unit has been inspected, tested, and approved by a certified outboard marine mechanic. Item: fuel pump johnson Evinrude: this is a used high pressure for 150, 175 hp v6 Fichte years...(April 19th, 2017)
• 395088 395088 Evinrude 1978-1994 85hp-300hp Johnson (30.8% similar) This will fit year model's 85HP-300HP johnson Evinrude outboard motors. This tilt and trim has been tested is in good working condition...(April 12th, 2017)
• 00000 Evinrude 1975 Johnson 85hp (38.2% similar) ...(February 21st, 2018)
• 0116761 Evinrude-johnson Bow Arm Assembly 089287000156 (39.4% similar) Bow arm assembly...(July 25th, 2017)
• 0123278 0123610 Omc Johnson Evinrude Outboard Motor Binnacle Control Box Handle Kit (29.4% similar) New handle kit fits single and dual mount binnacle controls...(May 28th, 2018)
• 0127084 Brp Evinrude Johnson Omc Stringer Thrust Washer (42.1% similar) Thrust washer...(July 2nd, 2018)
• 0127278 Brp Johnson Evinrude Single (33.6% similar) For 1996 and later systems check single binnacle remote controls. Only the cover-no switch or other. Single top mount johnson Evinrude remote control cover. Reference part number in good reusable condition-no fading-no cracks or broken areas...(January 26th, 2018)
• 0127280 Johnson Evinrude Nos Outboard Key (30.3% similar) Calculated shipping uses calculator. Sales: use shipping calculator to get charges. Buyer pays shipping except if free is offered. E of the value prop shaft. Note: ups cannot deliver to a PO. Under no circumstances will we falsify or undervalue export declared value documents. Torn, broken, written ...(February 19th, 2019)
• 0172522 Evinrude Johnson Oem Brp Outboard Ignition Kit 745419000677 (44.1% similar) 5 hp looking for something else. Items will only be accepted for return in their original condition, with absolutely no accessories missing. Correspondence via messaging is preferred...(May 6th, 2018)
• 0172574 New Genuine Johnson Evinrude Sending Unit Kit Lot (38.5% similar) ...(March 1st, 2018)