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  3. QUICKSILVER 23-25915

QUICKSILVER 23-25915 Outboard Shaft Rubber Bushing

fits model: Mariner. make: Mercury. year: 1976–1990.

23-25915 Quicksilver 1976-1990 Mercury Mariner Outboard Shift Shaft Rubber Bushing 23-259

( Brand: Quicksilver ), ( Manufacturer Part Number: 23-25915 ), ( Part Type: Shaft Bushing ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: B1 Sma-n Buk 15 Bin 4 )

Review QUICKSILVER Mercury Outboard Shift Shaft Rubber Bushing 23-259 fits MARINER 1976–1990

The **Quicksilver 23-25915 Shaft Rubber Bushing** is a meticulously engineered, high-performance component designed exclusively for the **1976 1990 Mercury Mariner outboard engines**, specifically tailored to the **23-259 series**. This bushing serves as a critical vibration-dampening and alignment element within the drive shaft assembly, ensuring smooth power transmission from the engine to the propeller while mitigating excessive wear on the shaft, propeller, and surrounding components. Crafted from durable, high-grade **rubber compound**, this bushing is engineered to withstand the demanding stresses of marine environments, including constant exposure to water, salt corrosion, and fluctuating temperatures. Its precise fit within the **23-259 outboard s drive shaft housing** helps reduce parasitic drag, enhances propulsion efficiency, and extends the lifespan of the entire drivetrain by absorbing shock and minimizing metal-to-metal contact. Whether used in recreational fishing boats, cruisers, or performance vessels, this bushing is a straightforward yet essential upgrade for maintaining optimal performance, reducing noise, and preventing premature failure in the drive system. Its universal compatibility with the specified Mercury Mariner models makes it an ideal replacement for worn or degraded original bushings, ensuring reliable operation and peace of mind for boat owners and mechanics alike.

### Pros and Cons of buying a Quicksilver 23-25915 Shaft Rubber Bushing (1976 1990 Mercury Mariner Outboard)

#### **Pros:**

1. **Compatibility and Fit:** This bushing is specifically designed for the 1976 1990 Mercury Mariner outboard motors, ensuring a precise fit without modifications. It is engineered to match the shaft diameter and mounting points of these models, reducing the risk of misalignment or improper installation.

2. **Durability and Performance:** Rubber bushings like this one are designed to absorb vibrations and shocks, which helps reduce wear on the shaft, transmission, and other drivetrain components. This can extend the lifespan of your outboard motor and improve overall smoothness during operation.

3. **Prevents Excessive Wear:** Without a proper bushing, the shaft can rub against the motor housing or other metal parts, leading to premature wear, corrosion, or even damage to the shaft itself. This bushing acts as a protective barrier, reducing friction and preventing such issues.

4. **Easy Installation:** As a direct replacement part, this bushing is typically straightforward to install, especially if you have basic mechanical skills or access to a mechanic. It often comes with installation instructions or clear labeling to guide the process.

5. **Cost-Effective Solution:** Replacing a worn or damaged bushing is usually far cheaper than repairing or replacing a damaged shaft, transmission, or motor housing. It is a preventative measure that can save you money in the long run by avoiding costly repairs.

6. **Availability and Reliability:** Quicksilver is a well-known brand in the marine industry, and this part is widely available through marine supply stores, online retailers, and specialty outboard motor shops. The part is likely to be reliable and backed by the manufacturer s quality standards.

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#### **Cons:**

1. **Age of the Part:** While the part itself may be new, it is designed for older Mercury Mariner models (1976 1990). If your motor has been heavily modified or upgraded, there may be compatibility issues with newer components. Ensure the bushing matches your specific motor configuration.

2. **Potential for Wear Over Time:** Like all rubber components, this bushing will eventually degrade due to exposure to water, UV rays, and mechanical stress. Depending on usage (e.g., frequent boating, saltwater exposure), it may need replacement every few years.

3. **Installation Challenges:** If the bushing is difficult to access or requires removing other components (e.g., the lower unit or shaft), installation might be more complex than anticipated. Rust or corrosion in older motors could also complicate the process.

4. **Quality Variability:** While Quicksilver is a reputable brand, the quality of aftermarket parts can sometimes vary depending on the source or batch. Always purchase from authorized dealers or trusted suppliers to avoid counterfeit or low-quality replacements.

5. **Limited Lifespan Compared to Metal Parts:** Rubber bushings have a shorter lifespan than metal components. If your motor sees heavy use, you may need to replace the bushing more frequently than other parts, adding to maintenance costs over time.

6. **Potential for Misalignment:** If the bushing is not installed correctly or if the motor s alignment was previously compromised, the new bushing may not function as intended. Proper installation is critical to avoid issues like uneven wear or vibration.

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### **Conclusion:**

The Quicksilver 23-25915 shaft rubber bushing is a practical and cost-effective solution for maintaining the health of your 1976 1990 Mercury Mariner outboard motor. Its primary benefits lie in its compatibility, durability, and ability to prevent costly damage by reducing friction and vibration. However, it is not a permanent fix it will eventually wear out and may require replacement. The part is reliable for its intended purpose, but its longevity depends on proper installation, usage conditions, and maintenance.

If your motor is experiencing unusual vibrations, shaft wear, or transmission issues, this bushing could be a straightforward and affordable upgrade. However, if your motor has been heavily modified or if you suspect other underlying problems (e.g., worn bearings, misalignment), addressing those issues first may be necessary for long-term reliability.

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### **Recommendation:** **Buy the Quicksilver 23-25915 shaft rubber bushing if:**

- Your Mercury Mariner outboard (1976 1990) is showing signs of shaft or transmission wear due to lack of a proper bushing.

- You are experiencing excessive vibration, unusual noise, or visible wear on the shaft or housing.

- You want a direct replacement part that is easy to install and widely available.

- You are willing to replace it periodically as part of routine maintenance.

**Avoid or proceed with caution if:**

- Your motor has been heavily modified, and you are unsure whether the bushing will fit correctly with new components.

- You suspect other major issues (e.g., damaged bearings, misaligned components) that require professional diagnosis.

- You are purchasing from an untrusted source, as counterfeit or low-quality parts could worsen problems.

**Final Advice:**

Before purchasing, inspect your current bushing and shaft for damage. If the bushing is cracked, deformed, or missing, replacement is clearly necessary. If you are unsure about installation, consult a marine mechanic to ensure the bushing is fitted correctly. Regularly check the condition of the bushing and replace it as needed to maintain optimal performance. For older motors, consider pairing this replacement with other routine maintenance tasks (e.g., greasing bearings, checking propellers) to keep your outboard running smoothly.

Details:

The image to watch on YouTube. It ensures smooth and precise shifting for these classic outboards. Fits: Fits various 6HP to 25HP Mercury and Mariner outboard engines from 1976-1990. This is a New Old Stock NOS genuine Quicksilver OEM rubber bushing 23-25915 for the shift shaft on many Mercury and Mariner outboard engines.

Spotlight: A Day Inside .

part #: 2325915 prices

  • $7.05-$24.99

specifications ouboaen:

  • for models: Mariner
  • for makes: Mercury
  • for years: 1976-1990
  • brand: Quicksilver
  • mpn: 23-25915
  • part type: Shaft Bushing
  • country of origin: United States
  • manufacturer warranty: Unspecified Length
  • storage location: B1 Sma-n Buk 15 Bin 4

shipping ouboaen:

  • cost: $0.00
  • transit: 4-9 Days
  • carrier: USPS, FedEx
  • type: Fixed
  • service: USPS Ground Advantage, USPS Priority Mail, FedEx 2Day, Overnight
  • class: Standard, Expedited, One-day

general ouboaen:

  • Boat Parts > Outboard Engines Components > Mid-Sections
  • condition: New other see details

offer ouboaen:

  • options: Ship-to-home
  • best offers: True
  • started: March 28, 2026
  • availability: In Stock
  • sold: 0
  • quantity: 3

seller ouboaen:

  • city: Odessa, Florida
  • rating: 99.4%
  • # reviews: 218588

payments ouboaen:

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

returns ouboaen:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
for models: mariner, for makes: mercury, for years: 1976-1990, part type: shaft bushing, country of origin: united states, manufacturer warranty: unspecified length, storage location: b1 sma-n buk 15 bin 4,
category: boat parts > outboard engines components > mid-sections, sku: 22935991750218983,
Quicksilver 23-25915 Is Similar To:
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2 offers $7.05–$24.99 USD
  • New other (see details). Offer #1 priced at $24.99 + $0.00 shipping estimate = $24.99* total. Are these genuine OEM parts?. It ensures smooth and precise shifting for these classic outboards.FREE SHIPPING
  • New. Offer #2 priced at $7.05 + $0.00 shipping estimate = $7.05* total. FREE SHIPPING

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