1. Truck Bed Parts Products
  2. sku: 21188854410350773
  3. KEY 110433

KEY PARTS 110433 Fleetside Sill

fits model: Cross. make: Chevrolet, Gmc. year: 1958-59.

110433 Key Parts 1958-59 Chevrolet / Gmc Fleetside Truck Cross Sill

( Brand: Key Parts ), ( Manufacturer Part Number: 110433 ), ( Item Height: 81 ), ( Item Weight: 16 )

Review KEY PARTS Chevrolet Gmc Fleetside Truck Sill fits CROSS 1958-59

The **Key 110433 for a 1958-1959 Chevrolet/GMC Fleetside Cross Sill** is a meticulously crafted, high-quality replacement key designed to perfectly replicate the original ignition and steering lock mechanisms found in these iconic mid-century commercial vehicles. Engineered to match the exact specifications of the classic **Fleetside chassis**, this key features a **precision-cut bow** tailored to engage the intricate tumblers of the vintage lock cylinder, ensuring smooth operation without the wear and tear associated with aftermarket knockoffs. The bow is forged from durable, corrosion-resistant steel, treated to resist bending or breaking over time, which is particularly important for vehicles that may see occasional use or be stored in less-than-ideal conditions. The key s **shank** is designed to fit snugly into the ignition and steering column locks, providing a secure and reliable connection that prevents accidental disengagement, a critical feature for both safety and the preservation of the vehicle s mechanical integrity.

Beyond its functional excellence, this key embodies the timeless craftsmanship of the era it serves. The **1958-1959 Chevrolet/GMC Fleetside** was a workhorse of American industry, known for its robust build, distinctive **cross-sill chassis** (a reinforced structural element that enhanced durability), and the signature **Fleetside body style**, which blended utility with a clean, aerodynamic aesthetic. The key itself reflects this heritage with its **classic, no-nonsense design** no unnecessary ornamentation, just a reliable tool built to last. Whether used for daily operations, restoration projects, or as a collector s piece, this key ensures that the ignition and steering lock systems operate with the same precision and reliability as they did when the vehicle was new. For enthusiasts and professionals alike, investing in this key is a testament to attention to detail, a commitment to authenticity, and the assurance that every component of the vehicle no matter how small functions as it should.

### **Pros and Cons of Buying a 1958-59 Chevrolet/GMC Fleetside Cross Sill**

#### **Pros**

1. **Classic American Truck Design** The 1958-59 Fleetside Cross Sill is a well-regarded model from Chevrolet s mid-century lineup, known for its distinctive styling, including the iconic "fleetwood" wood-paneled sides and chrome detailing. It represents a nostalgic era of American automotive craftsmanship.

2. **Strong Engine Options** These trucks were available with a variety of engines, including the **235 cubic inch inline-six (120-140 hp)** and the **265 cubic inch inline-six (162 hp)**, as well as the **283 cubic inch V8 (195 hp in 1959)**. The V8 models, in particular, offer better performance and towing capability compared to the six-cylinder versions.

3. **Durable and Simple Mechanics** Mid-century trucks like this were built with solid construction, featuring heavy-duty frames, simple drivetrain components, and straightforward suspension systems. While not as refined as modern trucks, their mechanical simplicity makes them easier to repair with basic tools.

4. **High Resale Value for Classics** As a rare and desirable classic truck, especially in good condition, the Fleetside Cross Sill holds significant value among collectors and enthusiasts. Well-preserved examples can appreciate over time.

5. **Customization Potential** The truck s vintage design allows for extensive customization, from restomod projects (modernizing the engine and interior while keeping the classic exterior) to full restorations. Many owners enjoy bringing these trucks back to showroom condition.

6. **Strong Community and Support** There is a dedicated community of owners, restorers, and mechanics who share knowledge, parts, and restoration tips. Clubs like the **Chevrolet Truck Club** and **GMC Truck Club** provide resources for enthusiasts.

7. **Unique and Collectible Status** The Fleetside Cross Sill is one of the rarest and most sought-after Chevrolet/GMC trucks from the 1950s. Its wood-paneled sides and distinctive styling make it stand out, appealing to collectors and vintage truck enthusiasts.

8. **Potential for Off-Road Use** With the right modifications (heavy-duty suspension, lifted axles, and reinforced frame), these trucks can be adapted for light off-roading or farm use, though they are not as capable as modern trucks in extreme conditions.

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#### **Cons**

1. **High Maintenance Requirements** Mid-century trucks were not built for longevity without regular upkeep. Rust is a major concern, especially in the frame, floor pans, and suspension components. Neglect can lead to costly repairs.

2. **Rust Issues** Many 1958-59 Fleetside Cross Sills were driven in harsh conditions, leading to widespread rust damage. Even well-preserved examples may require extensive rust repairs, particularly in the wheel wells, rocker panels, and undercarriage.

3. **Limited Modern Comforts** The interior is basic by today s standards, with vinyl or fabric upholstery, manual transmissions, and minimal sound insulation. Long drives may be uncomfortable compared to modern trucks with power features and climate control.

4. **Fuel Efficiency Concerns** The inline-six and V8 engines are thirsty by modern standards, especially the V8 models. Expect poor mileage (around **10-12 MPG** for the V8), which can be costly for daily driving.

5. **Parts Availability and Cost** While some parts are still available from specialty suppliers, others may require sourcing from junkyards or restoration shops. Labor costs for classic trucks can be high due to the need for experienced mechanics familiar with vintage systems.

6. **Driving Experience** The truck s heavy weight, soft suspension, and manual steering make it less nimble than modern trucks. Handling can be sluggish, and visibility may be limited due to the truck s size and design.

7. **Insurance Costs** Classic trucks, especially rare and high-value models, can be expensive to insure. Rates may be higher due to their specialized nature and potential repair costs.

8. **Limited Modern Safety Features** There are no modern safety features like airbags, stability control, or advanced braking systems. The truck relies on basic mechanical safety, which can be a concern for modern drivers.

9. **Time-Consuming Repairs** Restoring or maintaining a Fleetside Cross Sill requires significant time and effort, especially for those without mechanical experience. Projects can take years to complete.

10. **Not Practical for Daily Use** While possible, using this truck as a daily driver is impractical for most people due to its age, comfort, fuel efficiency, and maintenance demands. It is better suited for weekends, shows, or as a hobby project.

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### **Conclusion**

The **1958-59 Chevrolet/GMC Fleetside Cross Sill** is a remarkable piece of automotive history with undeniable charm and collectible value. It is ideal for enthusiasts who appreciate classic design, enjoy restoration projects, and are willing to invest time and money into maintaining it. However, it is not a practical choice for those seeking a reliable, low-maintenance, or modern daily driver.

If you are considering this truck, it is crucial to thoroughly inspect it for rust, mechanical condition, and structural integrity. Budget for potential repairs, and be prepared for the long-term commitment required to keep it running. For the right buyer someone who values nostalgia, craftsmanship, and the joy of working on a classic the Fleetside Cross Sill is an incredible investment. For others, it may be better suited as a weekend project or a showpiece rather than a functional vehicle.

### **Recommendation**

- **Buy if:** You are a dedicated classic truck enthusiast, have mechanical skills or access to experienced help, and are willing to invest in restoration or maintenance. You should also have storage space and be prepared for the truck to be a hobby rather than a daily driver.

- **Avoid if:** You need a reliable, low-maintenance, or modern vehicle. If you prioritize fuel efficiency, safety, or comfort over vintage appeal, this truck is not the right choice.

- **Alternative Considerations:** If you love the era but want something more practical, consider a **1960s-1970s Chevrolet/GMC truck** (like a 1967-1972 C/K series) that offers better reliability and modern features while still retaining classic appeal.

Ultimately, the Fleetside Cross Sill is a dream machine for the right owner one who appreciates its history, is patient with its quirks, and finds joy in the restoration process. For everyone else, it may be best left to collectors and show enthusiasts.

Details:

The bed strips are bolted to the Cross sills giving wood strength and rigidity providing surface mount truck frame.Each sill has pre-punched holes in 14 gauge steel with original bolt pattern for your year model .Note: Shipped double oversize.Applications:1958-59 GM Fleetside truck: 3 required short mod els5 long model's specs Confused about parts terminology what you might need add or replace. The link below to find answers:Truck Bed wood - A Beginners Guide. 1958-59 Chevrolet / GMC Fleetside Truck; Cross Sill: This Cross sill is mounted across the frame under wood for support.

specifications otruckbedaccessories:

  • for models: Cross
  • for makes: Chevrolet, Gmc
  • for years: 1958-59
  • brand: Key Parts
  • mpn: 110433
  • item height: 81
  • item weight: 16

general otruckbedaccessories:

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

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  • transit: 4-9 Days
  • service: UPS Ground, UPS 2nd Day Air
  • class: Standard, Expedited
  • carrier: UPS
  • type: Calculated
  • cost: $102.47

offer otruckbedaccessories:

  • sold: 0
  • availability: In Stock
  • quantity: 2
  • options: Ship-to-home
  • started: March 21, 2026

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  • # reviews: 51118
for models: cross, for makes: chevrolet, gmc, for years: 1958-59, item height: 81, item weight: 16,
category: auto parts > exterior parts accessories > truck beds parts > truck bed accessories, sku: 21188854410350773,
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