1968-1973 C3 64-Piece Rear Bumper Mounting Hadrware Kit
Complete hardware set makes rear bumper replacement straightforward and factory-accurate.
When it’s time to replace or restore your C3’s rear bumpers, broken or missing hardware can slow you down. This 64-piece kit supplies all the correct bolts, nuts, lock washers, and flat washers needed to properly mount both rear bumpers. Each fastener is matched to the original GM specifications for strength, size, and finish to ensure secure installation and authentic appearance.
Fits the Following Corvette Models:
• C3 (1968–1973)
Material/Finish
• Grade 5 and Grade 2 zinc-plated fasteners for corrosion resistance
Dimensions
• 12 – 7/16"-14 x 1 1/4" (31.75 mm) Grade 5 zinc hex bolts, 5/8" head
• 4 – 1/2"-13 x 1 1/2" (38.1 mm) Grade 5 zinc hex bolts, 3/4" head
• 6 – 7/16"-14 Grade 2 finished hex nuts, 11/16" across flats, 3/8" thick
• 4 – 1/2"-13 Grade 2 finished hex nuts, 3/4" across flats, 7/16" thick
• 12 – Zinc 7/16" medium split lock washers
• 26 – Standard zinc 1/2" flat washers, 1 1/16" outside diameter, 3/32" thick
Features/Benefits
• Complete 64-piece kit for mounting both rear bumpers on 1968–1973 Corvettes
• Fasteners match original GM specifications for fit and finish
• Grade 5 and Grade 2 zinc-plated hardware resists corrosion
• Includes bolts, nuts, lock washers, and flat washers for a complete installation
• GM reference part number not provided
• Sold individually as a complete kit, 1 required per Corvette
Because Details Matter
Your Corvette’s rear bumpers don’t just need to look right—they need to be solidly attached. Using the correct grade and size hardware ensures the bumpers align properly, stay secure at speed, and preserve the authentic appearance of your C3—because details matter.
Also known under these part numbers: (For reference only)
- 17752
- 203104
- 601173
- 686420319177