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1953-1962 Corvette C1 Master Cylinder Block Small Washer

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Item ID: 624-545
Availability: In Stock - Ships today if ordered by 3 PM CT
Fits Years:
  • 1953-1962
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  • Description
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1953-1962 C1 Master Cylinder Block Small Washer

Ensure proper sealing in your C1 master cylinder brake block assembly.

This copper washer is a critical component in the 1953–1962 Corvette brake system. Installed after the brass block and before the special retaining bolt, it creates the tight, leak-free seal required for safe braking performance. Replacing aged washers restores original function and prevents dangerous fluid leaks in your early Corvette’s master cylinder.

Fits the Following Corvette Models:

  • 1953–1962 Corvette (C1)

Material/Finish

  • Precision-stamped copper for long-lasting hydraulic sealing.

Dimensions

  • Outer Diameter: 11/16 in (17mm)

  • Inner Diameter: 17/32 in (13mm)

  • Thickness: 1/32 in (0.8mm)

Features/Benefits

  • Correct small copper washer for C1 master cylinder assembly.

  • Provides leak-free seal in brake block system.

  • Essential for maintaining brake fluid pressure.

  • Designed to GM factory dimensions.

  • GM reference part number not provided.

  • Sold individually, 1 required per Corvette.

Because Details Matter
The 1953–1962 Corvette braking system depends on precise stacking of copper washers, brass blocks, and bolts. This small washer may be the thinnest piece, but it holds the system together. Authentic braking confidence comes from every part doing its job—because details matter.



Also known under these part numbers: (For reference only)

  • 686420322450
  • LSBLB4
Prop 65