1. Boat Outboard Engines To Buy
  2. sku: 23282466768640871
  3. MERCURY 821629A

MERCURY Quicksilver Anode 821629A2

fits model: Marine. make: Mercury.

821629a2 Mercury 821629a Quicksilver Marine Anode Assembly

( Manufacturer Part Number: 821629A )

Review MERCURY Quicksilver Anode Assembly fits MARINE

The **Mercury 821629A Quicksilver Marine Anode** is a high-performance, corrosion-resistant sacrificial anode designed specifically for marine applications where protection against galvanic corrosion is critical. Engineered with a proprietary **Quicksilver alloy**, this anode delivers superior longevity and efficiency compared to standard zinc or aluminum alternatives, making it an ideal choice for boats, yachts, and other watercraft exposed to harsh saltwater environments. Its robust construction ensures consistent protection for critical metal components such as propellers, shafts, rudders, and underwater hull fittings, preventing premature wear and costly repairs. The anode s **high-purity composition** minimizes the risk of premature failure, even in high-stress conditions like frequent use or extended periods in saltwater. With a **smooth, corrosion-resistant coating**, it maintains its structural integrity while efficiently sacrificing itself to shield surrounding metal parts from electrolytic damage. Whether installed on outboard motors, stern drives, or inboard propulsion systems, the 821629A provides reliable, long-lasting corrosion protection, helping to extend the lifespan of your vessel s most vulnerable components. Its compact yet durable design ensures easy installation and replacement, making it a practical and cost-effective solution for marine owners who demand both performance and durability in their equipment.

### **Pros and Cons of buying a Mercury 821629A Quicksilver Marine Anode (821629A2)**

#### **Pros:**

1. **Effective Corrosion Protection** Marine anodes like this one are designed to corrode preferentially, protecting critical metal components (such as propellers, shafts, and hulls) from galvanic corrosion. This extends the lifespan of your boat s metal parts, reducing costly repairs.

2. **Compatibility with Mercury Engines** This specific anode is engineered for Mercury outboard motors, ensuring optimal performance and protection for their proprietary materials. Using the correct anode prevents premature wear on the engine s internal components.

3. **Easy Installation** The design is straightforward, requiring minimal tools and time to replace. Most boat owners or mechanics can install it without professional assistance.

4. **Cost-Effective Long-Term Solution** While the upfront cost is moderate, replacing anodes regularly (typically every 1 3 years, depending on usage) prevents far more expensive corrosion-related damage to the engine and hull.

5. **High-Quality Material** Made from Quicksilver alloy, this anode offers superior corrosion resistance compared to cheaper alternatives, ensuring reliable protection over time.

6. **Widely Available** As a common replacement part for Mercury outboards, it is easy to find at marine supply stores, online retailers, and through Mercury s official channels.

7. **Minimal Maintenance** Once installed, it requires no additional maintenance beyond periodic inspection to check for adequate corrosion.

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#### **Cons:**

1. **Replacement Frequency** Anodes degrade over time, especially in saltwater or high-use conditions. Frequent replacements (every 1 3 years) can add up in cost, depending on how often you use your boat.

2. **Limited to Mercury Engines** This anode is **not universal**; it is specifically designed for Mercury outboards. Using it on non-Mercury engines may not provide optimal protection and could void warranties.

3. **Cost per Replacement** While not extremely expensive, buying anodes regularly can become a recurring expense, particularly for heavy-duty or saltwater applications.

4. **Potential for Improper Installation** If not installed correctly (e.g., not securely fastened or in the wrong location), it may fail to protect the engine effectively. Improper installation can also lead to premature wear.

5. **Environmental Considerations** Anodes contain metals like zinc or aluminum, which, when discarded improperly, can contribute to marine pollution. Users should dispose of old anodes responsibly (e.g., through recycling programs for metals).

6. **Performance Depends on Water Conditions** In freshwater, anodes may last longer than in saltwater, where corrosion rates are higher. Boaters in harsh environments may need to replace them more often.

7. **No Guarantee Against All Corrosion Types** While anodes protect against galvanic corrosion, they do not prevent other forms of damage, such as mechanical wear, rust from improper storage, or damage from debris.

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### **Conclusion:**

The **Mercury 821629A Quicksilver Marine Anode (821629A2)** is a **highly effective and reliable** solution for protecting Mercury outboard motors from corrosion. Its **specific engineering for Mercury engines**, **ease of installation**, and **long-term cost savings** make it a worthwhile investment for boat owners who prioritize engine longevity. However, the **need for regular replacements**, **engine-specific compatibility**, and **environmental disposal considerations** are important factors to weigh.

For **Mercury outboard owners**, this anode is **highly recommended** as a standard maintenance item. If you use your boat frequently in saltwater or harsh conditions, budget for **annual or semi-annual replacements** to ensure optimal protection. If you have a **non-Mercury engine**, this anode is **not suitable**, and you should use an anode compatible with your specific make and model.

**Final Recommendation:**

Purchase the **Mercury 821629A Quicksilver Marine Anode (821629A2)** if you own a Mercury outboard and follow a **regular replacement schedule** based on your usage. Store it properly when not in use, and dispose of old anodes responsibly. For non-Mercury engines, consult your manufacturer s guidelines for the correct anode type. This simple yet critical maintenance step will **significantly extend the life of your engine** and prevent costly repairs.

Details:

Part number: 821629A2. Mercury Quicksilver Marine Anode Assembly.

part #: 821629a prices

  • $18.79-$28.67

specifications ouboaen:

  • for models: Marine
  • for makes: Mercury
  • mpn: 821629a

payments ouboaen:

  • other
  • wallet: Paypal
  • credit card: Discover

general ouboaen:

  • condition: New other see details
  • Boat Parts > Outboard Engines Components > Other

offer ouboaen:

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

shipping ouboaen:

  • carrier: USPS
  • service: USPS Ground Advantage
  • class: Standard
  • type: Calculated
  • transit: 5-9 Days
  • cost: $7.46

returns ouboaen:

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

seller ouboaen:

  • # reviews: 55
  • city: Arlington, Washington
  • rating: 100.0%
for models: marine, for makes: mercury,
category: boat parts > outboard engines components, sku: 23282466768640871,
Mercury 821629A Is Similar To:
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5 offers $18.79–$28.67 USD
  • New. Offer #1 priced at $18.79 + $6.58 shipping estimate = $25.37* total. +$6.58 shipping
  • New. Offer #2 priced at $28.67 + $0.00 shipping estimate = $28.67* total. FREE SHIPPING
  • New. Offer #3 priced at $19.95 + $5.95 shipping estimate = $25.90* total. For shipping outside of the continental United States please inquire about shipping cost before bidding. I am selling Mercury Quicksilver Drive shaft housing anode, part number -2.+$5.95 shipping
  • New other (see details). Offer #4 priced at $20.00 + $8.06 shipping estimate = $28.06* total. Part number: 2.+$8.06 shipping
  • New other (see details). Offer #5 priced at $20.00 + $16.95 shipping estimate = $36.95* total. +$16.95 shipping

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