1. Electrical Components ATV Parts For Sale
  2. sku: 25053373872710008
  3. CELOX VR4963RR108HS

CELOX VR4963RR108HS Rectifier Outboard 70350A1 115HP

fits model: Marine. make: Mercury. year: 1973–1988.

Vr4963rr108hs Celox Rectifier For Mercury Marine Outboard 115 115hp 1973-1988

( Brand: Celox ), ( Manufacturer Part Number: VR4963RR108HS ), ( Part Type: Rectifier ), ( Color: Black ), ( Material: Aluminum, Plastic ), ( Item Length: 50.8 Mm ), ( Vintage Part: No ), ( California Prop 65 Warning: Proposition 65 Warning For California Consumers. ), ( Oe/oem Part Number: 70350a1, 62351a1, 62351a2, 816770, 816770t, 70350a3, 8m0058226 ), ( Manufacturer Warranty: 3 Months ), ( Item Height: 27.2 Mm ), ( Country Of Origin: China ), ( Item Weight: 4 Oz )

Review CELOX Rectifier Mercury Outboard 115 115hp fits MARINE 1973–1988

The **Celox VR4963RR108HS Rectifier** is a high-performance, direct-replacement alternator designed specifically for Mercury Marine outboard engines ranging from **115 to 115 horsepower**, covering model years **1973 through 1988**. Engineered to restore peak electrical efficiency and reliability, this rectifier is a critical component for maintaining optimal charging performance in marine applications where power demands are both consistent and demanding. Built with a robust **silicon diode assembly**, the VR4963RR108HS ensures smooth, high-output current regulation, reducing voltage fluctuations that can otherwise lead to battery drain, electrical system failures, or premature wear on sensitive marine electronics. Its **compact yet durable construction** is tailored to fit seamlessly within the original engine bay layout, preserving the integrity of the wiring harness and mounting points while delivering superior voltage regulation typically producing **14.5 volts at idle** and scaling efficiently under load, a hallmark of Celox s precision engineering.

What sets this rectifier apart is its **high-current capacity**, designed to handle the rigorous demands of marine environments where saltwater corrosion, vibration, and fluctuating loads are constant challenges. The **heat-resistant housing** and **sealed diode configuration** protect against moisture ingress and electrical arcing, ensuring longevity even in harsh conditions. Whether powering essential navigation systems, bilge pumps, or onboard lighting, the VR4963RR108HS delivers consistent, clean power eliminating the risk of voltage sags that could disrupt critical functions. For boat owners seeking a **direct, drop-in upgrade** to their aging Mercury outboard, this rectifier offers a cost-effective solution to restore electrical performance without the need for extensive wiring modifications. Backed by Celox s reputation for quality and compatibility, it stands as a trusted choice for restoring reliability to classic and vintage marine setups, bridging the gap between vintage engineering and modern electrical demands.

### **Pros and Cons of buying a Celox VR4963RR108HS Rectifier for a Mercury Marine Outboard (115/115HP, 1973 1988)**

#### **Pros:**

1. **Compatibility** The Celox VR4963RR108HS is specifically designed for Mercury Marine outboards from 1973 to 1988, including the 115/115HP models. It is a direct replacement for the original rectifier, ensuring proper fit and function without modifications.

2. **Reliability** Celox is a well-known brand in marine electrical components, known for producing high-quality, durable rectifiers. This unit is built to withstand the demands of marine environments, including saltwater exposure and vibration.

3. **Performance** A faulty rectifier can cause charging issues, leading to a weak or dead battery. Replacing it with a new Celox unit ensures proper voltage regulation, preventing drain on the battery and maintaining reliable electrical operation for accessories like lights, GPS, and starter motors.

4. **Ease of Installation** The VR4963RR108HS is designed for straightforward replacement. It mounts in the same location as the original rectifier, and the wiring connections are identical, making it a simple DIY job for those with basic mechanical skills.

5. **Prevents Long-Term Damage** A failing rectifier can damage the alternator or battery over time. Replacing it early prevents costly repairs to other components and extends the lifespan of the outboard s electrical system.

6. **Warranty Coverage** Celox products typically come with a warranty, providing peace of mind in case of manufacturing defects.

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#### **Cons:**

1. **Cost** While not excessively expensive, the rectifier is a specialized part. If the outboard is no longer in regular use or is a project boat, the expense may not be justified unless electrical issues are persistent.

2. **Potential for Counterfeit Parts** If purchasing from an untrusted seller (e.g., eBay, Facebook Marketplace, or unverified online stores), there is a risk of receiving a counterfeit or low-quality knockoff. Always buy from authorized dealers or reputable marine supply companies.

3. **Additional Wear on Alternator** If the alternator is already degraded, replacing just the rectifier may not fully resolve charging problems. In some cases, the alternator itself may need replacement, adding to the cost.

4. **Saltwater Corrosion Risk** Even with a new rectifier, if the outboard is stored improperly (e.g., in a damp or unprotected environment), corrosion can still occur over time, potentially shortening the lifespan of the new part.

5. **Skill Dependency** While the installation is straightforward, those without basic mechanical or electrical experience may struggle with wiring or securing the rectifier properly. Improper installation could lead to shorts or loose connections.

6. **Limited Availability** As older outboards become rarer, finding a replacement rectifier may require special ordering, which could delay repairs.

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### **Conclusion:**

The **Celox VR4963RR108HS rectifier is a strong choice** for a Mercury Marine 115/115HP outboard (1973 1988) if electrical issues (e.g., weak charging, dead battery) are present. It offers a reliable, direct replacement with minimal risk of compatibility problems. The benefits of improved charging performance, extended battery life, and prevention of further damage outweigh the minor drawbacks, particularly for boats that are actively used.

However, if the outboard is rarely used or in poor condition, the cost may not be justified unless electrical failures are persistent. Always verify the seller s legitimacy to avoid counterfeit parts, and consider inspecting the alternator for wear if charging issues persist after replacement.

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### **Recommendation:** - **Buy the Celox VR4963RR108HS** if:

- Your outboard is experiencing charging problems (e.g., battery drains quickly, lights flicker, or the battery won t hold a charge).

- You plan to use the boat regularly and want to prevent further electrical issues.

- You purchase it from an authorized dealer or a trusted marine parts supplier (e.g., West Marine, Sea-Doo Marine, or Mercury Marine s official site).

- **Consider alternatives or further diagnosis if:**

- The outboard is stored long-term and not in use.

- You suspect the alternator is failing alongside the rectifier (a multimeter test can confirm).

- You re unsure about installation consult a marine mechanic if DIY is not an option.

For most owners dealing with electrical symptoms, replacing the rectifier is a **cost-effective and practical solution** that will restore proper charging and prevent future problems.

Details:

135hp 1986 -1988. Premium Quality Replacement Part, Regulator Rectifier. 150 150hp 1973-88. For Mercury Marine model's.

20 20hp 1973-1987. 115hp 1973-88.

specifications electricacompone:

  • for models: Marine
  • for makes: Mercury
  • for years: 1973-1988
  • brand: Celox
  • mpn: Vr4963rr108hs
  • part type: Rectifier
  • color: Black
  • material: Aluminum, Plastic
  • item length: 50.8 Mm
  • vintage part: No
  • california prop 65 warning: Proposition 65 Warning For California Consumers.
  • oe/oem part number: 70350a1, 62351a1, 62351a2, 816770, 816770t, 70350a3, 8m0058226
  • manufacturer warranty: 3 Months
  • item height: 27.2 Mm
  • country of origin: China
  • item weight: 4 Oz

payments electricacompone:

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

offer electricacompone:

  • availability: In Stock
  • sold: 0
  • best offers: True
  • quantity: 1
  • options: Ship-to-home
  • started: May 14, 2026

general electricacompone:

  • ATV, Side-by-Side UTV Parts Accessories > Electrical Ignition Components > Other Electrical Ignition Components
  • condition: New

shipping electricacompone:

  • cost: $0.00
  • carrier: USPS, FedEx
  • class: Standard, Expedited
  • service: USPS Ground Advantage, FedEx 2Day
  • type: Fixed
  • transit: 5-10 Days

seller electricacompone:

  • city: Beaumont, Texas
  • rating: 99.6%
  • # reviews: 1185

returns electricacompone:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
for models: marine, for makes: mercury, for years: 1973-1988, part type: rectifier, item length: 50.8 mm, vintage part: no, california prop 65 warning: proposition 65 warning for california consumers., oe/oem part number: 70350a1, 62351a1, 62351a2, 816770, 816770t, 70350a3, 8m0058226, manufacturer warranty: 3 months, item height: 27.2 mm, country of origin: china, item weight: 4 oz,
category: atv parts > atv, side-by-side utv parts accessories > electrical ignition components, color: black, material: aluminum, plastic, sku: 25053373872710008,
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