Dorman M40000 Brake Master Cylinder – Precision Replacement for Select 1962–1966 GM Vehicles
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Description
xOverview
The Dorman M40000 Brake Master Cylinder is designed as a precise replacement that mirrors the original part’s design, function, and performance. Built with new materials and attention to detail, it offers a dependable upgrade for classic GM-era vehicles that relied on an accurate master cylinder to manage braking response.
Fitment at a glance
This master cylinder is compatible with a broad array of models from Buick, Chevrolet, GMC, Oldsmobile, Pontiac, and even Jeep Wagoneer, spanning model years 1962 through 1966. Before you purchase, use the garage tool to confirm fitment for your exact make, model, and trim level.
- Buick, Chevrolet, GMC, Oldsmobile, Pontiac, and Jeep Wagoneer from 1962–1966
- Classic coupes, sedans, and trucks that originally used a similar master cylinder design
- Designed to align with the original mounting and line routing for straightforward installation
Quality you can rely on
- 100% new construction using fresh materials for consistent performance
- Durable EPDM rubber components with resistance to glycol-based brake fluid
- Strict SAE International specifications to meet modern safety and reliability standards
- Manufactured to help ensure proper fit and function when used as a direct replacement
Why consider the M40000
Owners of mid-1960s GM vehicles may notice a familiar braking feel with a replacement designed to match the original geometry. While results can vary with overall braking system condition, this part is positioned to support reliable replacement and restoration projects without guesswork.
How to verify fitment
- Check your vehicle year, make, model, and trim against the listed compatibility
- Use the garage tool to enter your exact trim for confirmation
- Inspect mounting points, fluid ports, and routing to ensure alignment with your braking system
FAQ
Q: What vehicles are compatible with the Dorman M40000 Brake Master Cylinder?
A: Compatible with a wide range of 1962–1966 GM, Oldsmobile, Pontiac, Buick, Chevrolet, GMC, and Jeep Wagoneer models; use the garage tool to confirm your exact trim.
Q: What benefits does the Dorman M40000 offer as a replacement master cylinder?
A: 100% new construction, precise original-design fit, durable EPDM seals, and SAE-standardized quality for reliable braking system support.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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