1. Automatic Transmissions Products
  2. sku: 23571004810760871
  3. BENTLEY 8653486

BENTLEY 8653486 Automatic Transmission Gearbox Mulsanne 6.75L

fits make: Bentley. year: 1988.

8653486 1988 Bentley Mulsanne S 6.75l At Automatic Transmission Gearbox Oem

( Manufacturer Part Number: 8653486 ), ( Type: Transmission ), ( Items Included: Gear ), ( Country Of Origin: United Kingdom ), ( Manufacturer Warranty: 30 Day ), ( Ipn: 400- )

Review BENTLEY Mulsannes 6.75l At Automatic Transmission Gearbox Oem fits 400 1988

The **1988 Bentley Mulsanne (Chassis No. 8653486) with its iconic 6.75-liter inline-six engine and automatic transmission gearbox** represents a rare and highly sought-after example of Bentley s golden era of luxury and engineering excellence. This particular model, built during the final years of the legendary **Mulsanne Series II**, embodies the refined elegance and mechanical sophistication that defined Bentley s pre-conversion pre-war-inspired designs. The **6.75-liter inline-six engine**, a powerplant renowned for its smooth, torque-rich performance and timeless British craftsmanship, delivers a commanding yet effortless presence, characteristic of Bentley s approach to automotive luxury. With its **four-speed automatic transmission**, this gearbox ensures seamless and predictable shifting, allowing the driver to focus on the exhilarating yet understated driving experience that only a Bentley can provide. The Mulsanne s **handcrafted coachwork**, featuring the signature **long, low, and luxurious silhouette**, is complemented by meticulously detailed interiors that combine classic woodwork, supple leather, and premium materials, all designed to evoke a sense of timeless opulence. This specific example, with its **original automatic transmission**, is a prime candidate for restoration or preservation, offering enthusiasts the opportunity to restore or maintain a piece of automotive history in its purest form. Whether as a collector s item, a statement of heritage, or a daily driver for those who appreciate the art of British engineering, this 1988 Bentley Mulsanne stands as a testament to Bentley s enduring legacy of luxury, performance, and mechanical artistry.

### **Pros and Cons of Buying a 1988 Bentley Mulsanne (6.75L, Automatic Transmission, Gearbox Mulsanne)**

#### **Pros**

1. **Iconic British Luxury Brand** Bentley is one of the most prestigious automotive brands, known for its craftsmanship, heritage, and exclusivity. Owning a classic Mulsanne carries significant prestige.

2. **Vintage Grand Touring Design** The 1988 Mulsanne features a timeless, elegant design with a long hood, sweeping fenders, and a luxurious interior that was ahead of its time. Its presence is undeniable, making it a standout vehicle.

3. **Powerful Engine** The 6.75L inline-six engine (originally a Rolls-Royce Silver Spirit engine) produces around **250 270 horsepower**, which, while modest by modern standards, provides a smooth, torquey, and refined driving experience. It is also known for its durability if well-maintained.

4. **Automatic Transmission** The three-speed automatic (later models had a four-speed) is smooth and reliable for its era, offering a comfortable cruising experience without the need for manual shifting.

5. **Classic Bentley Chassis & Suspension** The Mulsanne s independent front suspension and live rear axle provide a balanced ride, though it may feel firmer than modern luxury cars. The chassis is sturdy, and with proper maintenance, it can remain roadworthy for decades.

6. **Potential for Restoration & Customization** As a classic Bentley, this car has a dedicated following. Restoration projects can be rewarding, and parts (while expensive) are available from specialty suppliers. Some owners modify interiors for modern comfort without losing the car s vintage charm.

7. **Investment Potential** Classic Bentleys, especially well-preserved examples, can appreciate in value over time. A properly maintained 1988 Mulsanne could be a worthwhile long-term investment, particularly if it remains in excellent condition.

8. **Unique Driving Experience** The Mulsanne offers a different kind of driving experience compared to modern hypercars or SUVs. Its weight, power delivery, and road manners make it enjoyable for leisurely drives, especially on well-maintained roads.

9. **Luxury Interior Materials** Original Mulsannes feature high-quality materials such as leather, wood trim, and chrome accents, which, if preserved, add to the car s desirability.

10. **Community & Enthusiast Support** Bentley owners and classic car clubs provide resources, forums, and networking opportunities for maintenance, restoration, and ownership advice.

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#### **Cons**

1. **High Maintenance Costs** Classic Bentleys are not cheap to maintain. The 6.75L engine, while robust, requires regular servicing, including valve adjustments, timing belt replacements (if applicable), and potential cylinder head work. Parts for older models can be expensive, and labor costs for specialist mechanics add up.

2. **Reliability Concerns** While some 1988 Mulsannes are well-preserved, others may suffer from common issues such as:

- **Electrical gremlins** (common in older British cars).

- **Rust** (especially in the chassis, suspension, and undercarriage, depending on storage conditions).

- **Transmission wear** (automatic transmissions can develop slipping or rough shifting over time).

- **Fuel system issues** (carburetors or early fuel injection systems may require attention).

- **Brake system degradation** (drum brakes on the rear can wear out and need resurfacing or replacement).

3. **Fuel Efficiency** The 6.75L engine is thirsty, consuming around **20 25 MPG (7 9 L/100km)** in mixed driving. Fuel costs for a car of this size and age can be prohibitive, especially with modern fuel prices.

4. **Modern Comfort & Safety Standards** The Mulsanne lacks modern safety features such as airbags, ABS, stability control, or advanced driver-assistance systems. The ride can be firm, and visibility may be limited compared to contemporary vehicles. Heating and air conditioning systems may also be less efficient than modern equivalents.

5. **Insurance Costs** Classic car insurance can be expensive, particularly if the car is not kept in a secure, climate-controlled environment. Comprehensive coverage for a high-value classic may require specialist insurers, adding to the cost of ownership.

6. **Limited Practicality** The Mulsanne is not a practical daily driver. Its size makes parking and maneuvering in urban areas challenging, and its performance is not suited for highway overtaking or aggressive driving. The interior may lack modern convenience features like Bluetooth, USB ports, or power-adjustable seats.

7. **Depreciation Risk** While some classics appreciate, others depreciate quickly if not well-maintained. A poorly cared-for 1988 Mulsanne could lose value faster than expected, especially if mechanical issues arise.

8. **Parts Availability & Scarcity** While parts exist for the Mulsanne, some components (especially rare or discontinued items) can be difficult to source. Restoring the car may require sourcing parts from other Bentleys or Rolls-Royces, increasing costs and complexity.

9. **Driving Experience Limitations** The car s weight and power delivery make it less agile than modern sports cars. Acceleration is smooth but not quick by today s standards, and handling is more about comfort than sportiness.

10. **Environmental & Legal Considerations** Older cars may not meet modern emissions standards in some regions, requiring modifications or exemptions. Additionally, noise pollution laws could restrict where the car can be driven, particularly in urban areas.

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### **Ending Conclusion**

The 1988 Bentley Mulsanne is a stunning example of classic British luxury, offering a unique blend of heritage, power, and elegance. It is a car that appeals to enthusiasts who value craftsmanship, prestige, and the joy of owning a piece of automotive history. However, it is not a practical or low-cost vehicle to own. The high maintenance, insurance, and fuel costs, combined with its limited modern utility, make it more of a passion project than a daily driver.

If you are considering this purchase, it is essential to:

- **Thoroughly inspect the car s mechanical condition**, including the engine, transmission, suspension, and electrical systems.

- **Verify its service history** to ensure it has been well-maintained.

- **Budget for restoration or upkeep**, as unexpected repairs can be costly.

- **Consider storage and insurance** to protect the car s value.

- **Decide whether it fits your lifestyle** this is a car for leisure, not daily use.

For the right buyer someone with a deep appreciation for classic cars, financial resources, and patience the 1988 Bentley Mulsanne can be an incredibly rewarding and prestigious addition to a collection. For others, the practical and financial challenges may outweigh the appeal.

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### **Recommendation**

**Buy the 1988 Bentley Mulsanne only if:**

- You have the financial means to maintain it properly (budget at least **$10,000 $20,000 annually** for upkeep, depending on condition).

- You are prepared to store it securely (garage or climate-controlled facility) to preserve its value.

- You view it as a **project car or a collector s item** rather than a daily driver.

- You have access to a **specialist mechanic** familiar with Bentley/Rolls-Royce engines and transmissions.

- You are willing to accept that it will not be as comfortable, safe, or efficient as a modern vehicle.

**Avoid buying it if:**

- You need a practical, low-maintenance, or cost-effective car.

- You cannot commit to regular servicing and potential major repairs.

- You do not have a passion for classic cars or the patience for their quirks.

- You are not prepared for high insurance and fuel costs.

In summary, this Mulsanne is a **fantastic investment for the right owner** one who loves classic luxury and is ready for the challenges that come with it. For everyone else, it may be better to consider a modern Bentley or another classic car with lower ownership costs.

Details:

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specifications autotransmissionsgo:

  • for makes: Bentley
  • for years: 1988
  • mpn: 8653486
  • type: Transmission
  • items included: Gear
  • country of origin: United Kingdom
  • manufacturer warranty: 30 Day
  • ipn: 400-

seller autotransmissionsgo:

  • rating: 99.6%
  • city: Lumberton, New Jersey
  • # reviews: 9312

payments autotransmissionsgo:

  • credit card: Discover
  • wallet: Google-pay
  • other

offer autotransmissionsgo:

  • quantity: 1
  • started: April 21, 2026
  • sold: 0
  • best offers: True
  • options: Ship-to-home
  • availability: In Stock

returns autotransmissionsgo:

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

general autotransmissionsgo:

  • condition: Used
  • Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

shipping autotransmissionsgo:

  • service: Flat Rate Freight
  • type: Fixed
  • class: Freight
  • cost: $275.00
for makes: bentley, for years: 1988, type: transmission, items included: gear, country of origin: united kingdom, manufacturer warranty: 30 day,
manufacturer: bentley, category: auto parts > car truck parts accessories > transmission drivetrain > automatic transmission, sku: 23571004810760871,
Bentley 8653486 Is Similar To:
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2 offers $1893.23–$2751.69 USD
  • Used. Offer #1 priced at $2751.69 + $275.00 shipping estimate = $3026.69* total. +$275.00 shipping
  • Used. Offer #2 priced at $1893.23 + $265.00 shipping estimate = $2158.23* total. Item may show light scuffs, scratches or other imperfections as a result of thisbeing a used part. 81-87 Rolls Royce Silver Spirit Spur / Bentley Mulsanne.+$265.00 shipping

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