1968-1974 C3 Front Seat Underbody Reinforcement Plate LH 3908123 - OEM Number(s) (3908123)
Over decades of use, the floorboard under your C3 Corvette’s seat tracks can fatigue or crack—especially if the factory-installed reinforcement plate is corroded, loose, or missing. This 1968–1974 Corvette Front Seat Reinforcement Plate restores critical structural support to the front seat track mounting area.
Stamped from heavy-gauge steel like the original, this OE-style nut plate rivets beneath the floor pan and aligns with your seat track’s forward mounting point. Reinforcing the area ensures long-term seating stability and safety—whether you're restoring a show car or daily driver.
Features
• Fits 1968–1974 C3 Corvettes – Left Hand (LH) Side
• Supports front seat track mounting bracket
• Heavy-gauge stamped steel construction
• Installs beneath floorboard using rivets (not included)
• Two required per Corvette (sold individually)
• Replaces GM Part Number 3908123
Tech Notes
• Right Hand (RH) version sold separately
• Confirm side before ordering—does not fit both positions
Because Details Matter
Even the smallest hardware can influence how your seat performs and how confident you feel behind the wheel. Replacing missing or corroded seat reinforcement plates with this durable steel reproduction ensures your seat tracks are properly anchored—just like GM intended.
Also known under these part numbers: (For reference only)
- 3908123
- 483207
- B3360L
- I-1429