Understanding Rocker Panels: OEM-Style vs. Slip On Styles for Classic Vehicle Restoration

When it comes to restoring a classic car, the choice of parts is crucial to achieving a high-quality, authentic result. One essential component in this process is the rocker panel. At Rollers Auto Parts, we supply two main types of rocker panels: OEM-style (factory style) and Slip On style. Understanding the differences between these two types can help you make the best decision for your restoration project.

OEM-Style Rocker Panels

OEM-style rocker panels, also known as factory style, are mirror copies of the original rocker panels installed on your vehicle. These panels are designed to match the original specifications, using the same or even thicker gauge material for added durability. It is important to note that these are aftermarket parts, not OEM parts, and we are not associated with the vehicle manufacturer. The original vehicle manufacturer usually does not make panels like these available, as a rocker panel is actually an integral part of a much larger part that the vehicle manufacturer originally produced.

• Precision Crafting: OEM-style rocker panels are die-stamped with draw dies that allow for the correct slippage of the metal. This process ensures deeper and sharper radius curves without splitting the metal.
• Perfect Fit: These panels are meant to be welded in place like a puzzle piece, replacing the old, damaged steel. They typically include the lower portions of the door pillars, ensuring a seamless fit.
• Authenticity: Using OEM-style rocker panels helps maintain the original look and structural integrity of your classic vehicle.

Slip On Style Rocker Panels

The Slip On style (Slip Over style) rocker panels, often referred to as brake-formed panels, have a long history in vehicle repair and restoration. These panels were originally designed to slip over the existing damaged panel, making them easier to install without the advanced welding techniques we have today.

• Ease of Installation: Slip On panels are sometimes made slightly larger than the original rocker panels, allowing them to slip over the existing panel like a glove.
• Design: These panels usually stop short of major curves due to the difficulty in bending the steel. For instance, they include the horizontal door sill area and wrap underneath the vehicle to attach to the lower portion of the inner rocker panel.
• Versatility: Despite their simpler design, Slip On panels are still a popular choice due to their ease of use and adaptability.

Key Considerations

• Rust Removal: Before installing new rocker panels, it is imperative to remove all traces of rust. Rust can spread to the new panel, compromising its integrity.
• Proper Sizing: Always have the new panel in hand before making any cuts to your vehicle. This ensures you avoid any sizing issues, which can occur due to manufacturing variations.
• Structural Integrity: Rocker panels are a structural part of your vehicle. Ensuring they are installed correctly maintains the vehicle's structural integrity.

Not to be Confused With...

Rocker Panel Trim/Molding/Covers: These are different from rocker panels. Rocker panel covers, for example, are plastic components that fit over the rocker area for protection or aesthetics. They are not structural parts and should not be confused with the rocker panels discussed here.

Conclusion

Choosing the right rocker panel is a critical step in your classic car restoration project. Whether you opt for the precise fit of factory-style panels or the versatility of Slip On panels, Rollers Auto Parts has the quality parts you need to bring your classic vehicle back to life. Visit us for expert advice and top-notch products tailored to your restoration needs.

Article Posted: 05/22/2024 03:58:03 PM