AUTO METAL DIRECT 720-4078-6R Amd Bedside Fender Rh Gm Bed 79-87 Fleetside

( Brand: Auto Metal Direct ), ( Manufacturer Part Number: 720-4078-6R ), ( Type: Truck Box Panels ), ( Placement On Vehicle: Passenger Side ), ( Finish: Edp Coated ), ( Item Height: 8.000 ), ( Item Length: 82.30 ), ( Item Width: 35.500 ), ( Material: Steel ), ( California Prop 65 Warning: True )

Review AUTO METAL DIRECT Amd Bedside Fender Rh 79-87 Gm Fleetside Short Bed

The **Auto 720-4078-6R AMD Bedside Fender** is a meticulously crafted, high-quality aftermarket replacement part designed to restore both the functional integrity and classic aesthetic of General Motors **1979 1987 FleetSide bed trucks**, including models like the **C/K, C/K2500, and GMC Suburban** with the **AMD (Automatic Motor Division) 454/468/502 V8 engine**. This fender is engineered to fit precisely alongside the **bedside frame**, ensuring a seamless integration with the truck s original architecture while enhancing its rugged, utilitarian appeal. Constructed from **heavy-duty cold-rolled steel**, the fender is built to withstand the demands of daily use, from hauling heavy loads to enduring harsh weather conditions, without warping or corroding prematurely. Its **precision-machined edges** and **reinforced mounting points** guarantee a secure, vibration-free attachment to the truck s chassis, preventing rattles or misalignment over time. The fender s **smooth, contoured design** not only complements the truck s vintage lines but also provides essential protection for the wheel well and surrounding components, shielding them from debris, rocks, and road hazards. Whether restoring a show-quality classic or upgrading a workhorse, this fender delivers a perfect blend of **durability, authenticity, and performance**, ensuring a flawless fit and a head-turning appearance that pays homage to GM s legendary FleetSide legacy.

### **Pros and Cons of Buying a 1979-1987 GM FleetSide Bed Pickup with Auto 720-4078-6R AMD Bedside Fender**

#### **Pros**

1. **Classic Reliability** GM s FleetSide bed trucks from the late 1970s to early 1980s were built with durable components, particularly the **720-4078-6R AMD (Automatic Motor Drive) transmission**, which was a robust three-speed automatic designed for heavy-duty applications. Many of these transmissions were used in commercial and agricultural vehicles, meaning they were built to last under demanding conditions.

2. **Strong Engine Options** Many of these trucks came with **V8 engines (e.g., 305, 350, 400, or 454 cubic inches)**, which are known for longevity if properly maintained. The **350 V8** is particularly popular for its balance of power and reliability.

3. **Heavy-Duty Suspension & Frame** FleetSide beds were often fitted with **heavy-duty springs, shocks, and frames**, making them suitable for towing and hauling. The **AMD transmission** was paired with a **heavy-duty rear axle** (often 3.50, 3.73, or 4.10 ratios), which improves towing and payload capacity.

4. **Parts Availability** While not as common as modern trucks, **parts for GM FleetSide trucks from this era are still widely available**, especially for the **350 V8 and 720-4078-6R transmission**. Aftermarket support (e.g., performance exhausts, suspension upgrades) is also available.

5. **Potential for Restoration or Modification** These trucks have a **vintage appeal** and can be restored to showroom condition. Modifications like **performance exhausts, upgraded suspension, or modern electronics** can be done, though some may require custom work.

6. **Lower Purchase Price** Compared to modern trucks, these vehicles are **significantly cheaper**, often found in the **$2,000 $8,000 range** depending on condition. This makes them an attractive option for budget-conscious buyers.

7. **Proven Durability in the Right Hands** Many of these trucks were used in **agriculture, construction, or commercial work**, where they were subjected to harsh conditions. If well-maintained, they can still be **reliable workhorses**.

---

#### **Cons**

- **Rust** (especially in the frame, wheel wells, and undercarriage).

- **Worn suspension components** (shocks, bushings, ball joints).

- **Leaking seals** in the **720-4078-6R transmission** (common in older AMD units).

- **Distributor and ignition system failures** (if still running carbureted engines).

- **Belt-driven accessories** (water pump, alternator, power steering) that wear out over time.

2. **Transmission Limitations** The **720-4078-6R AMD transmission** is **heavy-duty but not as refined as modern automatics**. It can be **jerky in shifting**, lacks **overdrive**, and may require **frequent fluid changes** to prevent internal wear. Some owners report **leaking seals or slipping bands**, which can be costly to repair.

3. **Fuel Efficiency & Emissions** These trucks were not built for **modern fuel economy**. A **350 V8 with a carburetor** will average **10 12 MPG**, while a **400 or 454 V8** will be even worse. Additionally, **emissions standards** mean they may not pass **modern smog checks** in some states, limiting where they can be driven.

- **Anti-lock brakes (ABS)**

- **Stability control**

- **Airbags (if any, often just driver-side)**

- **Modern seat belts (some may have lap-only belts)**

- **Electronic fuel injection (most are carbureted or early EFI, which can be finicky)**

5. **Rust & Structural Issues** Many FleetSide trucks from this era **suffer from rust**, particularly in the **floor pans, rocker panels, and wheel wells**. A thorough inspection is **essential** to avoid buying a truck with **structural weaknesses**.

6. **Limited Modern Compatibility** Some **aftermarket parts and diagnostics** may not be available for older GM trucks. **OBD-II scanning** (for modern diagnostics) won t work, and **modern GPS/Bluetooth systems** may require custom wiring.

7. **Resale Value & Insurance Costs** These trucks **depreciate quickly** and have **low resale value**. Insurance costs can also be **higher** due to their age and perceived risk, especially if used for daily driving.

8. **Driving Experience** The **heavy steering, stiff suspension, and lack of power steering assist** (unless upgraded) make them **less comfortable** than modern trucks. The **noisy cabin** (especially with a manual floor shifter) and **limited sound insulation** can be a drawback for daily use.

---

### **Conclusion**

Buying a **1979-1987 GM FleetSide bed pickup with an auto 720-4078-6R AMD transmission** can be a **great investment** if you are looking for a **reliable, heavy-duty work truck** that you can **restore or modify**. The **V8 engine and transmission pairing** makes it suitable for **towing, hauling, or off-roading**, provided it is **well-maintained**.

However, if you need a **daily driver**, this truck will likely **require significant upkeep**, lack modern comforts, and may **fail emissions tests** in some areas. It is **best suited for enthusiasts, weekend project owners, or those who need a rugged, low-cost work vehicle** and are willing to **put in the time and effort** to keep it running.

---

### **Recommendation**

You are **mechanically inclined** and willing to **invest time in maintenance**.

You need a **heavy-duty, low-cost work truck** for **towing, hauling, or off-roading**.

You **enjoy classic vehicles** and want to **restore or modify** it.

You **inspect it thoroughly** for rust, transmission condition, and engine health before purchasing.

You **don t mind lower fuel economy and lack of modern amenities**.

You need a **daily driver** with modern safety and comfort features.

You **can t afford** the **ongoing maintenance costs** (transmission, suspension, rust repairs).

You **live in an area with strict emissions laws** that may not allow older vehicles.

You **prefer convenience** (easy starts, modern diagnostics, power features).

This is a **fantastic project truck** for the right buyer someone who appreciates **durability, character, and the challenge of keeping an older vehicle running**. However, it is **not a plug-and-play solution** for modern driving needs. **Always get a pre-purchase inspection** and **budget for repairs** before buying. If you re prepared for the work, a well-maintained FleetSide with an AMD transmission can be a **loyal and capable companion** for years.

Details:

Each bedside is assembled on our new robotic assembly line and features the correct shape, size, bends, holes, body lines braces, like original. Reproduction OE bedside fender. Headquarters. Part # 720-4078-6R Condition New Brand Auto Metal Direct Sold Each Details Reproduction OE bedside with square gas door recess for the 1979 1987 Chevrolet / GMC C/K Fleetside Short Bed model trucks.

Sold as each. Passenger side RH. Arrives EDP coated to help protect against rust and corrosion. Specs Position Passenger Side Material Type Steel Finish EDP Coated Sold in Quantity Each MFG.

Application: 1979 - 1987 Chevy C10 Pickup Fleetside Short Bed, C20 C30 K10 K20 K30 GMC C15 C25 C35 K15 K25 K35 Bed. Stamped from high quality OE gauge steel on new tools.

part #: 72040786r prices

• $75.00-$759.99

specifications otruckbedaccessories:

• brand: Auto Metal Direct
• mpn: 720-4078-6r
• type: Truck Box Panels
• placement on vehicle: Passenger Side
• finish: Edp Coated
• item height: 8.000
• item length: 82.30
• item width: 35.500
• material: Steel
• california prop 65 warning: True

general otruckbedaccessories:

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

payments otruckbedaccessories:

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

offer otruckbedaccessories:

• availability: In Stock
• quantity: 6
• options: Ship-to-home
• started: March 6, 2026
• sold: 0

returns otruckbedaccessories:

• policy: Returns Accepted
• time: 60 Days
• paid by: Buyer

seller otruckbedaccessories:

• city: Gainesville, Georgia
• rating: 99.7%
• # reviews: 352917

shipping otruckbedaccessories:

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