MERCEDES Rear Convertible Top Tonneau Cover 147.MB1U74 Benz 72-89

( Manufacturer Part Number: 450SL ), ( Part Type: Cover ), ( Conditions Options: Green, Convertible, Conv ), ( Genuine Oem: Yes ), ( Ipn: 147.mb1u74 ), ( Make: Mercedes-benz ), ( Manufacturer Warranty: 60 Day ), ( Placement On Vehicle: Rear )

Review MERCEDES benz Rear Convertible Top Tonneau Cover 72-89 fits 450SL 380SL 560SL R107 1974

The **Mercedes-Benz 147.MB1U74 450SL, 380SL, and 560SL (R107) Rear Convertible Top Tonneau Cover (1972 1989)** is a meticulously engineered accessory designed to preserve the pristine condition of the iconic R107 roadsters while enhancing their practicality and aesthetic appeal. Crafted to seamlessly integrate with the legendary **SL-Class** coupes and convertibles including the powerful **450SL (M117 engine)**, the refined **380SL (M117 or M116)**, and the luxurious **560SL (M117 with 5.0L V8)** this tonneau cover offers a perfect blend of functionality and heritage. The R107 series, known for its timeless design, aerodynamic elegance, and unmatched driving dynamics, demands accessories that respect its engineering while addressing modern needs, and this tonneau cover delivers precisely that.

Constructed from high-quality **polyester fabric** with a durable **vinyl-coated exterior**, this rear convertible top extension is designed to withstand the elements, ensuring long-term protection for the vehicle s rear seats, cargo area, and interior upholstery. The cover features a **snap-on or clip-in mechanism**, allowing for quick and secure installation without compromising the SL s signature convertible top operation. Its **low-profile design** ensures minimal disruption to the vehicle s aerodynamic lines, maintaining the R107 s iconic silhouette while providing a practical solution for transporting luggage, sports equipment, or even a spare tire. The fabric is treated to resist UV degradation, moisture, and mildew, making it ideal for both daily driving and occasional weekend excursions.

For enthusiasts who appreciate the **450SL s** exhilarating performance or the **560SL s** V8-powered luxury, this tonneau cover is particularly well-suited, as it preserves the vehicle s rear cargo space without the bulkiness of traditional hard covers. The **380SL**, with its balanced blend of power and efficiency, also benefits from this accessory, which allows owners to enjoy the open-air driving experience while maintaining versatility. The cover s **custom-fit design** ensures a snug, taut appearance, eliminating sagging or loose fabric that could detract from the SL s refined aesthetic. Additionally, the **removable nature** of the tonneau cover means it can be easily stowed when not in use, ensuring the convertible top remains fully operational and the vehicle retains its classic, unrestricted look.

Beyond its practical benefits, this tonneau cover pays homage to the **R107 s** enduring legacy by complementing its **handcrafted aluminum body panels, chrome accents, and timeless styling cues**. Whether paired with a **restored 1972 380SL** or a **1989 560SL** with modern upgrades, the cover enhances the vehicle s utility without overshadowing its heritage. For collectors and drivers who cherish the **SL-Class ** ability to effortlessly transition between sporty convertible and practical coupe modes, this accessory represents a thoughtful evolution bridging the gap between tradition and modern convenience. With its **durable construction, easy installation, and seamless integration**, the **Mercedes-Benz R107 Tonneau Cover** is an essential addition for any owner seeking to protect, preserve, and elevate their prized roadster.

### **Pros and Cons of Buying a Mercedes-Benz 147.MB1U74 (R107) 450SL/380SL/560SL (1972 1989) Rear-Convertible Top with Tonneau Cover**

The **Mercedes-Benz R107** (1972 1989) is a classic roadster with a distinctive rear-engine layout, known for its performance, luxury, and cult following. However, it comes with unique advantages and significant drawbacks that potential buyers must carefully consider.

---

### **Pros**

1. **Iconic Design and Presence**

The R107 s rear-engine, two-seat roadster silhouette is instantly recognizable and exudes a timeless, sporty aesthetic. Its angular, angular design (especially the later models) makes it stand out on the road.

2. **Strong Performance (Especially the 560SL)**

- The **560SL** (with the 5.6L V8) produces **280 300 hp** (depending on model year) and accelerates from 0 60 mph in **6.5 7.5 seconds**, which was impressive for its era and remains competitive for a classic.

- The **450SL (5.0L V8)** and **380SL (3.8L V8)** are also capable, though less powerful.

- The rear-engine layout provides a balanced weight distribution, improving handling compared to front-engine roadsters.

3. **Luxury and Comfort**

- Mercedes-Benz engineering ensures a smooth ride, even for a roadster.

- High-quality interior materials (leather, wood trim, chrome accents) make it feel premium.

- The **tonneau cover** (hard or soft) provides protection for the interior when the top is down, reducing wear and tear.

4. **Reliability (With Proper Maintenance)**

- The **M116 V8 engine** (used in the 380SL/450SL/560SL) is a robust, proven design if well-maintained.

- The **5-speed manual transmission** (standard on most models) is durable, though the **automatic (optional on later models)** can be finicky.

- The **rear-engine layout** means less stress on the drivetrain compared to front-engine roadsters.

5. **Modding and Tuning Potential**

- The V8 engines respond well to **performance upgrades** (e.g., forced induction, camshafts, exhaust).

- Aftermarket support exists for **suspension, brakes, and interior upgrades**.

- The **R107 s simplicity** (compared to later MB roadsters) makes it easier to work on than some modern classics.

6. **Collectibility and Investment Potential**

- The **R107 is highly sought-after**, especially the **560SL** and **later model years (1980s)**.

- Well-preserved examples appreciate in value, particularly those with **originality, low miles, and service records**.

- The **roadster market** has seen steady demand, making it a viable long-term investment for enthusiasts.

7. **Driving Experience**

- The **rear-engine layout** encourages a more engaged driving style.

- The **steering, brakes, and suspension** (when in good condition) provide a firm, responsive feel.

- The **convertible top** (when functioning properly) offers an open-air experience without the wind noise of older roadsters.

---

### **Cons**

1. **High Maintenance Costs**

- **Rust** is a major issue, especially on **floor pans, rocker panels, and rear subframes**. Many R107s require **full rust repairs**.

- **Electrical systems** (ignition, gauges, windows) are prone to failure and can be expensive to fix.

- **Seals and gaskets** (head gaskets, valve cover gaskets) often need replacement, leading to **engine labor costs**.

- **Transmission issues** (especially the **5-speed manual**) can develop **clutch wear, synchro failures, or shifting problems**.

2. **Reliability Concerns**

- **Oil leaks** (valve cover gasket, rear main seal).

- **Rod bearing wear** (especially in high-mileage examples).

- **Distributor and ignition problems** (early models suffer from **carbon tracking**).

- The **automatic transmission (where fitted)** is **less reliable** than the manual and often requires **fluid changes and adjustments**.

- **Suspension components** (shock absorbers, bushings, ball joints) wear out quickly and can lead to **poor handling**.

3. **Convertible Top Problems**

- **Fabric rot** (from UV exposure and moisture).

- **Mechanical failures** (cables, pulleys, and the **central drive mechanism** often break).

- **Water leaks** when the top is down, leading to **interior rust and electrical shorts**.

- **Replacing a top** is **extremely expensive** (often **$5,000 $10,000 ** for a quality restoration).

- **Tonneau covers** (while helpful) can **restrict airflow** and **add weight**, affecting performance.

4. **Driving Limitations**

- **Rear-engine layout** means **poor weight distribution** when fully loaded (e.g., with passengers or heavy luggage), leading to **understeer**.

- **Braking performance** is **adequate but not exceptional** later models have **improved discs**, but early ones struggle with fade.

- **Fuel economy** is **poor** (around **12 15 MPG** for the 560SL), making it expensive to own.

- **Passenger space is limited** the **narrow seats and short wheelbase** make long trips uncomfortable.

5. **Parts and Restoration Challenges**

- **Aftermarket parts** exist but can be **inconsistent in quality**.

- **Original parts** (especially for **electrical, suspension, and interior components**) are **expensive or hard to find**.

- **Restoration projects** often require **custom fabrication** (e.g., rust repairs, new tops, wiring harnesses).

- **Labor costs** for specialized mechanics (especially in Europe or the U.S.) can be **high**.

6. **Legal and Practical Issues**

- **Convertible tops may not meet modern safety standards** in some regions (e.g., **rollover concerns**).

- **Insurance can be costly** due to **high repair risks** and **low crash-test ratings**.

- **Storage and transport** are **challenging** the **long hood and rear engine** make it **difficult to fit in standard garages or car lifts**.

7. **Market Variability**

- **Prices fluctuate wildly** a **project car** may cost **$10,000 $20,000**, while a **fully restored, concours example** can exceed **$100,000**.

- **Buyer beware**: Many "restored" R107s are **cosmetically nice but mechanically unreliable**.

- **Financing is difficult** most lenders **won t approve loans** for classic cars unless they have **strong market value**.

---

### **Conclusion and Recommendation**

- **Enjoys mechanical challenges** and is willing to **invest significant time and money** in maintenance.

- **Values driving experience** over daily practicality.

- **Has a budget** for **restoration, parts, and potential repairs**.

- **Appreciates the car s cult status** and is okay with **high ownership costs**.

**Enthusiasts who want a project car** (if buying a **low-mileage, rust-free example** with a **serviceable engine and transmission**).

**Owners who prioritize driving pleasure** over modern convenience.

**Investors** who see **long-term appreciation potential** in well-preserved examples.

**Those with mechanical skills** (or access to a trusted mechanic) to handle **regular upkeep**.

**Casual buyers** who want a **low-maintenance, reliable classic**.

**Those without a budget** for **unexpected repairs** (e.g., **engine rebuilds, top replacements, rust work**).

**People who need a car for daily use** (due to **fuel costs, reliability, and impracticality**).

**Buyers who dislike working on cars** (the R107 **requires constant attention**).

If you **find a well-documented, low-mileage R107 with a solid engine, transmission, and minimal rust**, it can be an **exc

Details:

Warranty covers the base component and none of other attached parts. Mercedes 450SL 380SL 560SL R107 Rear Convertible Top Tonneau Cover Fits 72-89: Review photos this is your actual part. Rear Convertible Top Tonneau Cover Scratches Torn Fabric. Many electronic modules and components require programming.

Major components are stamped and may have heat sensitive tabs attached to indicated overheating that would void warranty. Miles: 231000 - N/A or Unknown. Stock #: 255784. Parts are not covered for external fluid leaks.

Donor Vehicle: model: 450SL. These extra attached parts are not covered by any warranty.

specifications otruckbedaccessories:

• for models: 450sl, 380sl, 560sl, R107
• for makes: Mercedes
• for years: 1974
• mpn: 450sl
• part type: Cover
• conditions options: Green, Convertible, Conv
• genuine oem: Yes
• ipn: 147.mb1u74
• make: Mercedes-benz
• manufacturer warranty: 60 Day
• placement on vehicle: Rear

shipping otruckbedaccessories:

• service: Flat Rate Freight
• class: Freight
• type: Fixed
• cost: $200.00

seller otruckbedaccessories:

• city: Port Washington, Wisconsin
• rating: 99.4%
• # reviews: 10921

offer otruckbedaccessories:

• best offers: True
• sold: 0
• started: March 10, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1

general otruckbedaccessories:

• condition: Used
• Exterior Parts Accessories > Truck Beds Parts > Truck Bed Accessories

payments otruckbedaccessories:

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

returns otruckbedaccessories:

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

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