How to find the right Automotive Rocker Panels AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Automotive Rocker Panels
- Panel type
- Decide between a full weld-in outer rocker, a partial (slip-on/half) repair section and an inner rocker or sill plate before ordering. Rot often runs into the inner rocker or cab corner, and an outer panel alone will not restore structure.
- Steel gauge vs OEM
- Match or exceed the original sheet thickness. Most car and truck outer rockers are roughly 18 to 20 gauge. Thin panels warp when welded and dent easily, and they rust through sooner.
- Coating
- Prefer EDP (e-coat) primed steel. Strip any coating where you will weld, then seal and cavity-wax the inside afterwards. Bare or lightly oiled panels start rusting before they are even installed.
- Exact fitment
- Match year, cab or door count (2-door vs 4-door, regular vs extended or crew cab) and side (driver vs passenger). Rocker length and the pinch-weld profile change between body styles.
- Stamping accuracy
- Check the body lines and the door-gap edge against the old panel before cutting anything out. Poorly stamped panels need hammer-and-dolly work to line up with the doors.
Brands that matter
- Key Parts: Widely stocked rocker and cab-corner panels for trucks and SUVs.
- Auto Metal Direct (AMD): Classic and muscle-car sheet metal with good stamping reputation.
- Sherman: Budget replacement rockers and quarter sections for many popular vehicles.
- Replacement Panels: Ohio-made rust-repair panels, strong for older trucks.
- Dynacorn: Classic restoration sheet metal, including rockers.
- Goodmark: Restoration sheet metal for classic GM, Ford and Mopar vehicles.
What to avoid
- Stainless or plastic slip-over covers riveted over active rust, which trap moisture and hide rot.
- Filling rotted rockers with body filler or foam instead of cutting out the bad metal.
- Welding in a new outer panel without treating the inner cavity.
Questions
Rocker panel or rocker molding?
A rocker panel is the structural sheet-metal sill under the doors. A rocker molding is the cosmetic plastic or chrome trim that bolts or clips over it.
Can I glue the panel on instead of welding it?
Panel-bonding adhesive is acceptable on some non-structural outer skins if the manufacturer allows it, but structural rockers are normally welded.