1. Truck Bed Parts Products
  2. sku: 21513147749980773
  3. OER AUTHORIZED 100714

OER AUTHORIZED 100714 Stepside Rear Bed Floor Sill 3/4

fits model: Cross. make: Chevrolet, Gmc. year: 1954-55.

100714 Oer Authorized 1954-55 Chevrolet Gmc Stepside Pickup Truck Rear Bed Floor Cross Sill 3/4

( Brand: Oer Authorized ), ( Manufacturer Part Number: 100714 ), ( Part Type: Bed ), ( Item Height: 58 ), ( Item Weight: 16 )

Review OER AUTHORIZED Chevrolet Gmc Stepside Pickup Truck Rear Bed Floor Sill 3/4 fits CROSS 1954-55

The **OEM 100714 Chevrolet/GMC Stepside Rear Bed Floor Cross Sill (3/4" thick)** is a meticulously crafted, high-quality replacement part designed to restore original functionality and structural integrity to classic 1954-1955 Chevrolet and GMC half-ton pickup trucks. Engineered to exacting specifications, this cross sill is a precision-machined component forged from heavy-duty steel, ensuring durability and resistance to warping or bending under heavy loads. The **3/4-inch thickness** provides a robust foundation for the truck s rear bed, reinforcing the frame rails and distributing weight evenly to prevent sagging or premature wear. Perfectly compatible with the iconic **Stepside** body style of this era, this sill seamlessly integrates with the existing frame, maintaining the truck s classic aesthetic while enhancing its load-bearing capacity. Whether used for restoration projects, performance upgrades, or simple frame repairs, this OEM-quality part guarantees a perfect fit, eliminating the need for costly modifications or compromises in fitment. Built to withstand the demands of daily driving, hauling, or towing, the **100714 cross sill** is an essential component for owners seeking both authenticity and reliability in their vintage Chevrolet or GMC.

### **Pros and Cons of Buying a 1954-55 Chevrolet/GMC Stepside Rear Bed Floor Cross Sill (OER 100714)**

#### **Pros**

1. **Classic and Unique Design**

The 1954-55 Chevrolet/GMC Stepside trucks are highly sought-after due to their distinctive styling, including the iconic "flying buttress" rear fenders, chrome accents, and vintage bodywork. This makes them stand out in a market dominated by modern trucks and restomods.

2. **Strong Original Engines and Drivetrains**

These trucks were originally equipped with **straight-six (235ci) or V8 (265ci) engines**, which are known for their durability and simplicity. The **Turbo Hydramatic 180 or Powerglide transmissions** are also reliable, though they require proper maintenance. The **RPO 100714** (a rare, high-end trim) likely included a **265ci V8**, which was a significant upgrade over the six-cylinder models of the era.

3. **Proven Suspension and Chassis**

The **live axle rear suspension** and **leaf springs** were well-engineered for their time, offering a smooth ride on smooth roads and decent off-road capability for the era. The **steel body-on-frame construction** is robust, though rust can be a concern if the truck was not properly maintained.

4. **Restomod Potential**

These trucks are excellent candidates for **restomod projects**, allowing owners to blend vintage aesthetics with modern performance upgrades. Aftermarket support exists for **engine swaps (LS, big-block, or even modern turbo V6s), suspension upgrades, and modern drivetrains**, making them highly customizable.

5. **Collectible Value**

The **1954-55 Stepside** is considered a **highly desirable classic truck**, especially in **mint condition or with originality**. Prices for well-preserved examples have risen significantly in recent years, making them a good investment for collectors.

6. **Nostalgia and Cultural Appeal**

These trucks hold a special place in American automotive history, often featured in **vintage car shows, movies, and pop culture**. Owning one allows enthusiasts to connect with a bygone era of American manufacturing.

7. **Moderate Fuel Efficiency (For the Era)**

While not efficient by today s standards, the **straight-six models** could achieve **around 12-15 MPG**, and the **V8 models** were slightly worse. However, modern fuel injection and engine swaps can improve efficiency significantly.

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#### **Cons**

1. **High Maintenance Requirements**

- **Rust**: Many 1954-55 trucks suffer from **frame rust**, especially in the **cross sills, rear axle housing, and floor pans**. A thorough inspection is essential before purchase.

- **Original Components**: Many parts (springs, shocks, brakes, and wiring) are **obsolete or difficult to find**, requiring custom fabrication or aftermarket replacements.

- **Electrical System**: The **12V wiring and old-school ignition systems** can be finicky, often requiring **restoration or modern upgrades**.

2. **Limited Modern Comfort and Safety**

- **Seating**: Original bench seats are **hard and uncomfortable** by today s standards. Modern seat replacements are available but may not match the vintage look.

- **No Modern Safety Features**: No **airbags, ABS, or modern braking systems** rear drum brakes are standard on originals.

- **No Power Steering or Brakes**: Original trucks have **mechanical steering and hydraulic brakes**, which can be **tiring to operate** on long drives.

3. **Fuel and Emissions Challenges**

- **Lead Gasoline Requirement**: Original engines **require leaded fuel**, which is no longer sold in most places. **Ethanol blends can cause damage** to carburetors and intake manifolds.

- **Emissions Compliance**: Restoring one for **on-road use** may require **exhaust modifications, smog equipment, or a modern catalytic converter**, depending on state laws.

4. **High Cost of Restoration**

- **Body Work**: Original paint and panels are often **faded or damaged**, requiring **metalwork, welding, and repainting**.

- **Engine and Drivetrain**: A **full rebuild** (or swap) can cost **$5,000 $15,000 **, depending on parts availability and labor.

- **Labor Intensive**: Many repairs (e.g., **rebuilding the Turbo Hydramatic transmission**) require **specialized knowledge** and time.

5. **Limited Practicality for Daily Use**

- **Slow Acceleration**: The **235ci six or 265ci V8** produces **around 100 120 HP**, making modern highway passing difficult.

- **Poor Fuel Economy**: Even with upgrades, **modern fuel efficiency will still be poor compared to today s trucks**.

- **Reliability Concerns**: While durable, **modern daily driving** can accelerate wear on **original components**, leading to frequent breakdowns if not properly maintained.

6. **Insurance and Registration Costs**

- **Classic Truck Insurance**: Specialized policies for vintage vehicles can be **expensive** (often **$1,000 $3,000/year** for full coverage).

- **State Registration Fees**: Some states **tax classic cars differently**, but others may require **emissions testing or modern safety modifications**.

7. **Market Saturation and Overhyped Values**

- **Inflated Prices**: Due to their popularity, **well-documented, restored examples** can sell for **$20,000 $50,000 **, but **project trucks** may not reach that value.

- **Buyer s Remorse Risk**: Some enthusiasts **overestimate restoration costs** and end up with a **money pit** if they underbudget.

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### **Conclusion**

Buying a **1954-55 Chevrolet/GMC Stepside (OER 100714)** is a **passionate choice** rather than a practical one. It is **ideal for collectors, restorers, and enthusiasts** who appreciate vintage automotive history and are willing to invest **time, money, and effort** into bringing it back to life. However, it is **not a sound investment for those seeking a reliable, modern truck** or a **low-maintenance daily driver**.

If you are **serious about this project**, you should:

- **Inspect thoroughly** for rust, engine condition, and structural integrity.

- **Budget for a full restoration** (or at least a **complete rebuild**).

- **Consider a modern engine swap** (e.g., **LS V8**) if you want better reliability and performance.

- **Join classic truck forums** (e.g., **Chevy Truck Forum, Classic Truck Club**) for advice and part sourcing.

If you **prioritize functionality over nostalgia**, a **modern truck with classic styling** (e.g., a **restomoded Ford F-150 or Chevy Silverado**) may be a better alternative. But if you **love the era and are prepared for the challenges**, this truck can be an **incredibly rewarding project**.

### **Final Recommendation**

**Buy it only if:**

You have **deep pockets and patience** for restoration.

You **enjoy hands-on mechanical work** and don t mind spending **hundreds of hours** on the project.

You **value the truck as a collector s item** rather than a functional vehicle.

You **plan to either restore it fully or swap in a modern drivetrain** for better reliability.

**Avoid it if:**

You need a **reliable, low-maintenance daily driver**.

You **cannot afford unexpected repair costs**.

You **don t have a garage or mechanical skills** to work on it.

You **prioritize modern convenience** over vintage charm.

For most people, this truck is a **project vehicle first and a truck second** but for the right owner, it can be an **endlessly satisfying passion project**.

Details:

Starting at the front bed panel and moving towards tailgate this is last Cross sill closest. Bolted between the bed sides it provides rear mounting holes for wood and strips. 1954-55 Chevrolet GMC; Stepside Pickup Truck; Rear Bed Floor Cross Sill; 3/4 Ton; with 8 Boards: Reproduction of the original rear Cross sill for use and GMC ton Truck model's .The is located below tailgate ties back bed together. NOTE: For use with 1955 1st design early production model's. Note: Shipped oversize.

part #: 100714 prices

  • $113.25-$145.94

specifications otruckbedaccessories:

  • for models: Cross
  • for makes: Chevrolet, Gmc
  • for years: 1954-55
  • brand: Oer Authorized
  • mpn: 100714
  • part type: Bed
  • item height: 58
  • item weight: 16

payments otruckbedaccessories:

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

general otruckbedaccessories:

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

shipping otruckbedaccessories:

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

returns otruckbedaccessories:

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

seller otruckbedaccessories:

  • rating: 99.7%
  • city: Huntington Beach, California
  • # reviews: 53978

offer otruckbedaccessories:

  • sold: 0
  • started: April 5, 2026
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 10
for models: cross, for makes: chevrolet, gmc, for years: 1954-55, part type: bed, item height: 58, item weight: 16,
category: auto parts > exterior parts accessories > truck beds parts > truck bed accessories, sku: 21513147749980773,
Oer Authorized 100714 Is Similar To:
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2 offers $113.25–$145.94 USD
  • New. Offer #1 priced at $145.94 + $165.15 shipping estimate = $311.09* total. OER products are meticulously manufactured to replicate the OEM appearance, quality and fit that meets or exceeds the original factory specifications. Rear Cross Sill ( ) by OER .+$165.15 shipping
  • New. Offer #2 priced at $113.25 + $0.00 shipping estimate = $113.25* total. Information like which side a part fits (LEFT or RIGHT) and specific vehicle attributes (Transmission, AWD/RWD, and other vehicle exclusions) are included for your information in this LEFT COLUMN. This part is sold as a PART NUMBER ONLY.FREE SHIPPING

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