OPR Ecklers Dual Brake Master Cylinder With Power Drum Brakes G-01001 (100+) (55-57 Chevy Bel Air; 55-57 Chevy 150; 55-57 Chevy 210; 55-57 Chevy Nomad)

Product Information

Features, Description, Q&A, Specs & Installation

Features

OPR Power Brake Dual Master Cylinder
Drum Brakes
Matte Black and Raw Metal Finish
Improved safety Over Single Master Cylinder Designs
Note that this is Incompatible with Original Treadle-Vac Brake Units
Requires Stock Non-Power Brake Pedals
OE Compatible and Comparable
Reproduction Part
Direct Replacement for Ecklers Legacy Number 20-151
Comes in Singles
Fits 1955 - 1957 Chevrolet Bel Air Models, 1955 - 1957 Chevrolet 150 Models, 1955 - 1957 Chevrolet 210 Models, and 1955 - 1957 Chevrolet Nomad Models

Description

Improved Brake Safety. The OPR Power Brake Dual Master Cylinder is designed to enhance braking reliability by providing a safer dual-circuit design compared to older single master cylinder systems. Manufactured as a reproduction part with OE-compatible and comparable characteristics, it offers a dependable upgrade for maintaining consistent brake system performance. Owners of 1955 - 1957 Chevrolet Bel Air Models, 1955 - 1957 Chevrolet 150 Models, 1955 - 1957 Chevrolet 210 Models, and 1955 - 1957 Chevrolet Nomad Models can use this component to improve braking confidence while preserving a factory-inspired appearance.

Construction and Appearance. Built as a quality reproduction component, this master cylinder features a combination of matte black and raw metal finishes that create a clean, restoration-friendly appearance. The durable construction is engineered to provide dependable hydraulic performance and long-term reliability under regular driving conditions. Quality materials and careful manufacturing standards contribute to consistent operation and lasting durability. The OE-compatible design helps maintain an appearance and functionality comparable to original equipment while supporting modernized braking performance.

Installation. Installation is straightforward because this component is engineered as a direct replacement assembly. The adaptable design allows it to integrate with compatible braking system components using standard service procedures and commonly available tools. Stock non-power brake pedals are required, and the unit is not compatible with original Treadle-Vac brake assemblies. Proper installation helps ensure reliable hydraulic operation and dependable braking performance throughout the system.

Application. This OPR Power Brake Dual Master Cylinder fits 1955 - 1957 Chevrolet Bel Air Models, 1955 - 1957 Chevrolet 150 Models, 1955 - 1957 Chevrolet 210 Models, and 1955 - 1957 Chevrolet Nomad Models. It helps improve braking safety by providing a dual-circuit hydraulic design that offers greater reliability than older single master cylinder configurations. The reproduction construction and upgraded functionality contribute to enhanced driver confidence and a more dependable braking system.

OPR G-01001 (100+)

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Installation & What's in the Box

Installation Info

Installation Time

(approx) 1 Hour

Difficulty Level:

Simple installation for anyone.

Installation Guides

No guide available for this part yet.

What's in the Box

(1) Power Brake Dual Master Cylinder

Warranty

OPR offers our valued customers the following Limited Warranty on all OPR product purchased after September 1st, 2026.

What is Covered

Subject to the terms, exclusions and limitations herein, and with respect only to products first sold in the United States, OPR warrants that its products shall be free of manufacturing defects for five (5) years from the date of initial retail purchase when the OPR product is installed and used on purchaser's vehicle according to supplied product installation instructions and/or warnings. This Limited Warranty is made only with respect to the initial purchaser and is not transferrable. OPR reserves the right to require proof of purchase as a condition of this Limited Warranty and to make future revisions to this product or its Limited Warranty without obligation to provide notice of same to purchaser or to conform existing product to future revisions. Any change to this warranty made after purchase may be applied retroactively at the sole discretion of OPR.

What is Not Covered

Your OPR Limited Warranty does not cover damage or claims to any component, vehicle, or person other than the OPR product purchased. Your Limited Warranty is expressly limited to replacement of the item itself shall OPR determine item was not free of defect. As such, this Limited Warranty does not cover damage or claims to any component, vehicle, or person OPR determines to have been damaged by or subjected to:

Installation damage, collision damage, alteration, modification, misuse or failure to maintain.
Damage in any part attributable to:
1. vehicle systems or components or
2. combination with non-OPR products.
Normal wear and tear/product deterioration.
Theft, vandalism or other negligent or intentional damage.

Remedy Limited to Repair/Replacement:

The exclusive remedy provided for products covered under this Limited Warranty shall be, upon OPR's inspection and at OPR's option, either repair or replacement of product or parts (new or refurbished). Any parts repaired or replaced will be considered part of the original product and will not extend the term of Limited Warranty. Customers requesting warranty consideration should first contact the independent distributor selling your product to obtain a Returned Goods Authorization number. All removal, shipping, and installation costs are customer's responsibility. If a replacement part is needed before your part can be returned, you must first purchase the replacement part. Then, if OPR determines the part warrantable, you will be credited the purchase price of that part.

This warranty is the only warranty made in connection with the purchase of this product. OPR neither assumes nor authorizes any manufacturer, vendor, retailer, other person or entity to assume for it any other obligation or liability in connection with its products or this Limited Warranty.

Other Limitations - Exclusion of Damages - Your Rights Under State Law:

In consideration of the purchase price paid, neither OPR nor any independent distributor are responsible for any loss of use or time, rental costs, or for any incidental, consequential, punitive or other damages (whether arising in tort or contract) you may have or incur in connection with your vehicle, or your OPR product. Your exclusive remedy hereunder is repair/replacement of the item itself or refund as described above at OPR's option. All implied warranties of merchantability and fitness for a particular purpose are hereby disclaimed or limited to the extent allowed under your jurisdiction.

4.8