1963–1982 C2-C3 Front Suspension Upper Control Arm Bumper 348220, 3742247 - OEM Number(s) (348220,3742247)
1963–1982 C2-C3 Front Upper Control Arm Bumper – GM 348220, 3742247
Put an end to metal-on-metal contact in your C2 or C3 Corvette's front suspension with our replacement Front Upper Control Arm Bumper. Designed to install into the pre-drilled hole in the upper control arm, this rubber bumper absorbs suspension travel impact—reducing noise, protecting components, and restoring proper ride dynamics.
Because Details Matter
• Fits 1963–1982 Corvettes
• Rubber bumper plugs directly into upper control arm
• Replaces GM #348220 (1963–1975) and GM #3742247 (1976–1982)
• Sold individually—2 required per Corvette
• Direct replacement for OE rubber bumper
• No modifications required for installation
Dimensions and Specs
• Bumper Diameter: 1.5"
• Bumper Height: 1.5"
• Overall Height (including plug): 1.91"
Under the Straw Hat – Restorer’s Insight
Corvette restorers know: GM revised this bumper design in 1976, but retained nearly identical geometry and materials. Whether you're rebuilding a '63 Split Window or a late C3 Shark, this replacement preserves suspension behavior and helps maintain that unmistakable Corvette ride feel.
From control arms to coil springs, our chassis components help keep your Corvette riding smooth, quiet, and confidently—just like it should.
Also known under these part numbers: (For reference only)
- 25-122913-1
- 348220
- 3742247
- 686420074137
- SU24