SKU: 38153383959

Fits GM 1967-1977 GM Restoration Cast Iron Master Cylinder MC309

Sale price$89.99 Regular price$99.99
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Description

Fits GM 1967-1977 GM Restoration Cast Iron Master Cylinder MC309Introducing the GM Restoration Cast Iron Master Cylinder (SKU: MC309)a premium replacement part engineered to restore the braking performance of classic GM vehicles from 1967 to 1977. This master cylinder is crafted to mirror the original equipment specifications, ensuring both functionality and authenticity for your restoration project. Key Features: Authentic Design: An exact replica of the original GM master cylinder, featuring casting number

Introducing the GM Restoration Cast Iron Master Cylinder (SKU: MC309)—a premium replacement part engineered to restore the braking performance of classic GM vehicles from 1967 to 1977. This master cylinder is crafted to mirror the original equipment specifications, ensuring both functionality and authenticity for your restoration project.

Key Features:

  • Authentic Design: An exact replica of the original GM master cylinder, featuring casting number 5463809 for period accuracy.

  • High-Quality Construction: Manufactured from durable cast iron with a natural finish, providing longevity and resistance to wear.

  • Integrated Bleeder Valves: Equipped with bleeder valves on the left side ports, facilitating easy air removal during the brake system bleeding process.

  • Versatile Application: Suitable for both manual and power brake systems, accommodating various restoration needs.

Item Specifications:

  • Part Number: MC309
  • Bore Size: 1-1/8 inches
  • Port Sizes:
    • Front Port: 9/16"-18 inverted flare
    • Rear Port: 1/2"-20 inverted flare
  • Material: Cast Iron
  • Finish: Natural Cast
  • Dimensions:
    • Length: 8 inches
    • Height: 5 inches
    • Center Mounting Holes Distance: 3-3/8 inches
  • Weight: Approximately 10 lbs

Compatibility:

This master cylinder is suitable for a range of GM vehicles equipped with disc/drum brake systems from 1967 to 1977, including:

  • Chevrolet:

    • 1967-1969 Camaro
    • 1967-1972 Chevelle
    • 1967-1977 Corvette
  • Pontiac:

    • 1967-1969 Firebird
    • 1967-1970 GTO

Installation Note:

This master cylinder features a deep bore design and includes a shallow bore adapter, making it compatible with both manual and power brake applications. Ensure compatibility with your vehicle's brake system before installation.

Restore your classic GM vehicle's braking system with the MC309 Master Cylinder, offering authentic design and reliable performance for your vintage automobile.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 38153383959

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Y K
Draper, US
★★★★★ 5
Comfortable
Material Type: Black - 2 Pairs, Size: X-Large, Material Type: Black - 2 Pairs, Size: X-Large
I have very sensitive skin, so I usually need to wear socks at all times. These are especially comfortable because they don’t cover the toes, which helps with temperature control. The material is well-balanced—not too thick or too thin—and has just the right amount of stretch. I also appreciate the large traction area, which adds stability. Another plus is that they are completely fragrance-free.
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Reviewed in the United States on April 21, 2026
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Pudatane
Pawtucket, US
★★★★★ 5
Great Heel Socks
Material Type: Black - 3 Pairs, Size: Large
I don't know how they work but it's wonderful. I've had rough heel problems for a long time. I wear these everyday and my heels are not rough. They're not baby bottom smooth, but they are not ever going to be. These heel socks also oncce they are properly positioned snap onto the heel. Properly positioning them is easy when you put them on your foot with the heel cup in the correct orientation.
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Reviewed in the United States on April 14, 2026
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beachx
Carnegie, US
★★★★★ 3
Too small
Material Type: Gray - 3 Pairs, Size: X-Large
Too tight! Even size large used for a man with smaller feet is too tight. Also, no instructions for use or care.
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Reviewed in the United States on May 21, 2026
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Jo-Ann Epstein
Belleville, US
★★★★★ 5
Good fit
Material Type: Black - 3 Pairs, Size: X-Large
My husband just started using these and they feel comfortable. Hasn't used them long enough to see if his heels are better. He has a high arch so I bought him the XL and they fit perfectly.
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Reviewed in the United States on April 24, 2026
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M.R.
West Palm Beach, US
★★★★★ 5
No more painful cracked heels! These really do work!
Material Type: Black - 3 Pairs, Size: X-Large
These really do work well. This is one of the first winters that I have not experienced painful, cracked heels. They are long lasting, and definitely make my heels smoother and softer after wearing them. For the first few times wearing them I simply went with the moisturizer embedded in them. After a few uses I then covered my heels with Aquaphor Advanced Therapy Healing Ointment. This worked even better, and I would recommend it. I am very glad I bought these. Of note, I have really big feet that are quite wide and the XL are a little snug but not uncomfortably so. I use them overnight, but also have worn them under socks and they work fine.
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Reviewed in the United States on February 3, 2026

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