1968-1977 C3 Door Sill Plate Hardware Set - FTF - 9423258 - OEM Number(s) (9423258)
Your C3 Corvette’s door sill plates see a lot of wear—scratches, corrosion, even missing hardware. This 8-piece screw kit restores that factory-fresh appearance and locks your sill plates down tight. Designed to fit all 1968–1977 Corvettes, this kit features the correct screw size and finish for securing the sill plates along the rocker trim area. It’s an easy upgrade that makes a big impact on your interior presentation.
Features
• Fits all 1968–1977 Corvette C3 models
• Replaces GM part number 9423258
• Includes 8 correctly sized and finished mounting screws
• Designed to secure factory sill plates at OEM locations
• Matches factory-correct appearance for restoration accuracy
Dimensions and Weight
• Screw Length: 5/8 inch
• Thread: #8 pan head sheet metal
• Finish: Bright zinc
• Weight: 1.4 oz
Final Touch Fasteners – Do It Right
At Mid America Motorworks, we call these parts FTF, or Final Touch Fasteners. When you’ve spent countless hours of work, worry, and detail, we don’t want you to lose that final assembly look by using incorrect, rusted, or mismatched fasteners. From correct finish, to headmarks to fastener design, we endeavor to have the Restoration Correct Fasteners to add that Final Touch to your Corvette Restoration Project.
Because Details Matter
Door sill plates are among the first things you see when opening a Corvette door—and they’re often the first to look worn. This correct screw kit lets you refresh that damage-prone area and preserve your Corvette’s clean, factory styling.
Also known under these part numbers: (For reference only)
- 343090
- 607088
- 686420324249
- 9423258
- Z10215
- ZI-646B