BENTLEY UD23873 Rolls Mulsanne Battery Voltage Gauge 87-90

( Brand: Bentley ), ( Manufacturer Part Number: UD23873 ), ( Type: Volt Meter ), ( Style: Gauge ), ( Display Type: Analog ), ( Unit Of Measure: Psi ), ( Color: Black ), ( Needle Color: White ), ( Country Of Origin: United Kingdom ), ( Performance Part: No ), ( Item Weight: 2.0000 ), ( Ipn: 699- ), ( Manufacturer Warranty: 30 Day )

Review BENTLEY 87-90 Rolls royce Mulsanne Silver Battery Condition Voltage Gauge fits SPUR

The **Bentley UD23873 87-90 Rolls-Royce Mulsanne Spur Battery Voltage Gauge** is a meticulously crafted, high-performance automotive instrument designed exclusively for the iconic 1987 to 1990 Rolls-Royce Mulsanne and Bentley T-series models featuring the distinctive spur-type wiring harness. This gauge is a precision-engineered component, built to seamlessly integrate into the vehicle s electrical system while delivering real-time, accurate readings of the battery voltage a critical metric for maintaining optimal engine performance, electrical system health, and overall vehicle reliability.

Constructed with the same level of craftsmanship and attention to detail that Rolls-Royce and Bentley are renowned for, this voltage gauge features a sleek, vintage-inspired dial with a polished chrome or high-quality black finish, depending on the model variant, ensuring it complements the luxurious aesthetic of the Mulsanne s interior. The gauge s robust construction includes a durable, high-impact plastic or metal housing, reinforced with corrosion-resistant materials to withstand the demanding environment of a high-end classic car. The needle, calibrated for precision, smoothly glides across the dial, providing immediate feedback on the battery s electrical output, with markings clearly indicating optimal voltage ranges (typically between 12.6V and 14.4V for a fully charged system) as well as warning zones for undercharging or overcharging conditions.

What sets this gauge apart is its compatibility with the **spur-type wiring harness** found in the 87-90 Rolls-Royce Mulsanne and Bentley models, ensuring a perfect fit without the need for extensive modifications. The wiring harness is meticulously designed to match the vehicle s original electrical architecture, with high-quality, tinned copper wiring and robust connectors that resist oxidation and ensure a secure, low-resistance connection. The gauge is also equipped with a **reverse polarity protection** feature, safeguarding the instrument and the vehicle s electrical system from potential damage due to incorrect wiring. Additionally, the gauge includes a **fuse holder** (often rated at 10A or 15A, depending on the application) to further protect the circuit from surges or short circuits, a thoughtful inclusion that aligns with the meticulous engineering standards of these legendary automobiles.

Beyond its functional excellence, the Bentley UD23873 voltage gauge is a statement piece for enthusiasts and collectors who appreciate both form and function. Its placement within the dashboard typically integrated into the instrument cluster or mounted alongside the existing gauges enhances the vehicle s classic elegance while providing essential diagnostic information. For owners of these rare and highly sought-after models, this gauge is not just a component but a nod to the vehicle s heritage, ensuring that every detail, from the gauge s design to its performance, reflects the uncompromising quality expected from Rolls-Royce and Bentley.

Whether installed as part of a full restoration project or as a critical upgrade for a well-maintained classic, the Bentley UD23873 voltage gauge is an indispensable tool for monitoring the electrical health of the 87-90 Rolls-Royce Mulsanne or Bentley. Its combination of precision engineering, vintage charm, and robust functionality makes it a must-have for any owner seeking to preserve the integrity and performance of their prized vehicle.

### **Pros and Cons of Buying a 1987 1990 Rolls-Royce Mulsanne Spur with a Bentley UD23873 Battery Voltage Gauge**

#### **Pros**

1. **Iconic Prestige and Legacy**

The Rolls-Royce Mulsanne Spur (and its Bentley twin) is one of the most prestigious and recognizable luxury cars ever made. Owning one carries significant historical and cultural value, appealing to enthusiasts who appreciate classic British craftsmanship.

2. **Superior Build Quality and Craftsmanship**

Built with meticulous attention to detail, these cars feature hand-stitched leather interiors, solid wood veneers, and high-quality materials. The engineering reflects the era s emphasis on durability and elegance, making them stand out in the luxury market.

3. **Reliability of the V8 Engine**

The 6.75L or 6.23L (depending on model year) inline-six or V8 engines (depending on variant) are robust and capable of lasting well over 200,000 miles with proper maintenance. The Mulsanne Spur typically uses the 6.23L inline-six, which is known for its smoothness and longevity when cared for.

4. **Timeless Design**

The Mulsanne s design remains timeless, with a long hood, sweeping fenders, and a regal presence. Its classic silhouette ensures it will never look outdated, making it a desirable collector s item.

5. **Resale Value and Collectibility**

As one of the rarest and most sought-after Rolls-Royce models, the Mulsanne Spur holds its value exceptionally well. Well-preserved examples can appreciate significantly over time, especially if they remain in original condition.

6. **Battery Voltage Gauge (UD23873) Functionality**

The Bentley UD23873 battery voltage gauge is a practical addition, allowing the driver to monitor the electrical system in real time. This is particularly useful for maintaining the car s complex electrical components, which can be finicky in older Rolls-Royces.

7. **Customization and Restoration Potential**

The Mulsanne Spur is a favorite among restorers due to its intricate details. Owners can invest in full restorations, upgrades, or even partial modifications (such as modernizing the electrical system) to suit their preferences.

8. **Exclusive Ownership Experience**

Owning a Rolls-Royce Mulsanne Spur means access to a community of like-minded enthusiasts, bespoke services, and a sense of exclusivity. The car s rarity ensures you won t be sharing it with the masses.

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#### **Cons**

1. **High Maintenance Costs**

Rolls-Royce (and Bentley) parts are expensive, and labor costs for specialized mechanics can be prohibitive. Regular maintenance such as valve adjustments, electrical system checks, and fluid replacements requires significant investment.

2. **Complex Electrical System**

The Mulsanne Spur s electrical system is outdated by modern standards and prone to failures. The Bentley UD23873 battery voltage gauge helps, but the overall wiring and components may still require frequent attention. Modern electronics can be incompatible, leading to additional costs for retrofitting or custom solutions.

3. **Fuel Efficiency and Running Costs**

The inline-six engine (or V8 in some variants) is thirsty, consuming around 18 22 MPG (city/highway). Fuel costs, insurance, and road tax (especially in the UK) add up quickly, making ownership less practical for daily use.

4. **Limited Availability of Spare Parts**

While not as scarce as some other classics, finding original or high-quality aftermarket parts for a 1987 1990 Mulsanne can be challenging. Some components may require sourcing from specialist suppliers or restoration workshops.

5. **Driving Experience Limitations**

The car is heavy, underpowered by modern standards, and lacks modern safety features (e.g., ABS, modern airbags, or electronic stability control). Driving dynamics are more about tradition than performance, which may not appeal to those seeking a sporty or practical vehicle.

6. **Potential for Hidden Issues**

Older Rolls-Royces can suffer from rust, worn suspension components, or neglected mechanical parts if not properly maintained. A thorough pre-purchase inspection is essential to avoid costly surprises.

7. **Insurance and Legal Considerations**

Insuring a classic Rolls-Royce is expensive due to its value and potential repair costs. Additionally, some countries have strict emissions or safety regulations that may require modifications, adding complexity to ownership.

8. **Depreciation Over Time (If Not a Collector s Item)**

While well-preserved examples appreciate, a poorly maintained Mulsanne Spur may depreciate rapidly. The market is niche, and demand fluctuates based on trends in classic car collecting.

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### **Ending Conclusion**

The **1987 1990 Rolls-Royce Mulsanne Spur with a Bentley UD23873 battery voltage gauge** is a remarkable investment for those who appreciate luxury, heritage, and exclusivity. It offers unmatched prestige, timeless design, and the potential for significant appreciation if maintained correctly. The battery voltage gauge is a practical upgrade, helping mitigate some of the electrical system s quirks.

However, ownership comes with substantial financial and logistical challenges. The high cost of maintenance, fuel inefficiency, and the car s impracticality for daily use mean it is best suited for enthusiasts who can afford the luxury of a hobbyist s budget. If you are prepared for the responsibilities and enjoy the process of restoring or preserving a masterpiece, this car is an extraordinary choice. For those seeking a practical or modern luxury vehicle, it is far from ideal.

### **Recommendation**

- You are a passionate collector or enthusiast who values heritage and craftsmanship above practicality.

- You have the financial means to maintain it properly, including budgeting for unexpected repairs.

- You intend to either drive it occasionally for special occasions or restore it as a long-term project.

- You are comfortable with the challenges of owning a classic luxury car, including high insurance, fuel costs, and part sourcing.

- You need a reliable, cost-effective daily driver.

- You cannot afford the ongoing maintenance and potential restoration costs.

- You prefer modern convenience, safety features, or fuel efficiency.

- You are not prepared to invest time and money into preserving its condition.

For most buyers, this car is a **passion project rather than a practical purchase**, but for the right owner, it is an unparalleled statement of luxury and elegance. Always conduct a thorough inspection, secure expert advice, and ensure the battery voltage gauge (or any modifications) are installed correctly to maximize longevity.

Details:

Orders placed before 0800 ECT are dispatched on the same day. Simply drop us a message with your car model and we'll quickly confirm the fitment.

part #: ud23873 prices

• $137.89-$149.95

specifications boosttempgauges:

• for models: Spur
• for makes: Royce, Rolls-royce, Bentley
• brand: Bentley
• mpn: Ud23873
• type: Volt Meter
• style: Gauge
• display type: Analog
• unit of measure: Psi
• color: Black
• needle color: White
• country of origin: United Kingdom
• performance part: No
• item weight: 2.0000
• ipn: 699-
• manufacturer warranty: 30 Day

offer boosttempgauges:

• availability: In Stock
• best offers: True
• sold: 0
• options: Ship-to-home
• started: April 26, 2026
• quantity: 1

seller boosttempgauges:

• rating: 99.6%
• # reviews: 9378
• city: Lumberton, New Jersey

general boosttempgauges:

• Interior Parts Accessories > Gauges > Individual Gauges
• condition: Used

returns boosttempgauges:

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

payments boosttempgauges:

• other
• wallet: Paypal
• credit card: Visa

shipping boosttempgauges:

• cost: $0.00
• service: USPS First Class, Expedited
• type: Fixed
• transit: 4-9 Days
• class: Standard, Expedited
• carrier: USPS

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